— Michigan Herb. 24: 173 1X7. 2005. /. NEW FROM EUPHORBIACEAE MEXICO. II. W. Steinmann Victor InstitutodeEcologia,A.C. Centro Regional del Bajio, A.P. 386 61600 Patzcuaro, Michoacan, Mexico Recent estimates of the number of species of Euphorbiaceae in Mexico vary and Michoacan from 782 (Steinmann 2002) to 826 (Martinez et 2002), the state of al. Rodriguez and Espinosa reported the possesses a rich diversity of these. (1996) and genera whereas Martinez presence of 127 species 19 for the state, et al. (2002) number reported 164 species and 20 genera. estimate that the actual of taxa is closer I value and even higher with about 185 species and 21 genera pres- to the latter slightly Here new species are described from Michoacan. ent. six Croton W. Steinmann, nov. Type: Mexico. Michoacan: Mpio. atrostellatus V. sp. NE km Angamacutiro, along the road from Panindicuaro to Villachuato, 18 NE km Guadalajara-Mexico Autopista and of Pueblo Nuevo, of the 4.5 20°06'35"N, 101°4E05"W, 1800 m, 19 Jun 2001, W. Steinmann 1681 ca. V. DAV! MICH! ARIZ! WIS!). (holotype: IEB!;isotypes: Fig. 1. m Frutex 2-5 monoecius, trichomatibus atris clispcrsis vest us; folia alterna, altus, it mm cm 1-3 stellato-tomentosi, lami- stipulae subulatae, 2.6-6.5 longae, petioli longi, cm cm nae plerumque ovatae, 2.5-9 longae, 1.8-6 latae, bicolores, apice acutae vel acuminatae, basi rotundatae vel leviter cordatae, supra stellato-puberulae, subtus stellato-tomentosae, margine serrulato-denticulato; infiorescentiae terminales, floribus (4-) 6-9, staminatis usque ad ca. 60, bracteae subulatae vel lineares, 1.2-3.1 pistillatis mm mm longae, stellato-tomentulosae; florum staminatorum calyx lobis 2.2-2.8 5, mm mm stamina anguste 3.1-3.6 longa, 1.3-1.9 petala albida, elliptica, longis, latis, mm antherae 1.0-1.2 15 vel 16, filamenta filiformia 3.0-3.6 longa, villosa, ellipticae, mm longae; florum pistillatorum calyx lobis 5 aequalibus, ovatis vel oblongis, (6), mm mm ovarium stellato-tomentosum, 3.9-5.2 2.8-3.6 trilobatum, styli longis, latis, mm mm 3.2-3.9 capsula depresso-subglobosa, ca. 6.5 bis bipartati, longi, filiformes; 3, mm mm mm complanata, longa 8 semina oblonga, 5.2-5.7 longa, 3.8^1.2 lata, et lata; mm mm caruncula 0.8-1.0 longa, 1.6-2.1 nitida, lata. m Shrubs, sometimes aborescent, 2-5 highly branched, drought-deciduous, tall, when monoecious; stems stellate-tomentose young, often with a dingy-yellow cast, throughout whole bark reddish brown. Leaves with scattered black hairs the plant, mm well-spaced on the stem; stipules 2.6-6.5 long, subulate, pilose to alternate, cm cm tomentulose; petioles 1-3 long, stellate-tomentose, lacking glands; blades 2.5-9 cm membranaceous, unlobed, pinnately veined, usually ovate, rarely 1.8-6 wide, long, rounded or oblong, apex acute to acuminate, base to slightly cordate, distinctly elliptic white green, abaxially stellate-tomentose, to bicolored, adaxially stellate-puberulent, dingy yellow, margin serrulate-denticulate, sometimes irregularly so and appearing cm 6-9 erose. Inflorescence a terminal racemelike thyrse to 11 long with (4-) pistillate flowers towards the base and up to ca. 60 staminate flowers along the proximal portion, flowers sometimes abortive and the inflorescence then appearing pistillate mm bracteoles unisexual, bracts 1.2-3.1 long, subulate to linear, stellate-tomentulose, w usm or mirharii Miciiii, ivi / flow Pishllah- I . . ... mm 0.4-1.1 Stami long, filiform, pilose. slender, stellate-i i mm mm mm pedicels 2.2-3. long; calyx 5-partite. lohes 2.2 2.8 long, .3-1.9 wide, tri- 1 1 angular-ovate to broadly ellip [ua to nearly the base, apex bluntly pointed, re< tii mm on stellate-tomentose the outside, glabrous within: petals 1-3.6 long, 0.7-0.9 5. 3. mm wide, narrowly elliptic, whitish, free to the base, apex rounded, glabrous on the mm outside, villosc within and along the margin; stamens IS or filaments 3.0-3.6 16. mm and long, filiform flexuous, villous especially towards the base, anthers 1.0-1.2 mm nun owl on ,( ' n IIipiK n! stout pedicels 1 long ii il I I i i (U or calyx valvate-reduplieai wilh adjacent Kate forming less; pairs ol a sepals a \ . — EUPHORBIACEAE STEINMANN: 2005 175 projection at the base), sepals 5 united ca. 1/4 to 1/3 their length, the lobes ovate (6) mm oblong, somewhat accrescent and enlarging to 3.9-5.2 long, 2.8-3.6 to in fruit mm wide, apex rounded, stellate-tomentose on the outside and along the inner edges, mm sometimes inner surface otherwise glabrous; petals present, to 4.3 long, strap- mm ovary 3-lobed, stellate-tomentose, styles filiform, 3.2-3.9 long, twice bifid, like; 3, mm mm numerous Capsule rusty-brown, with stellate trichomes. ca. 6.5 long, ca. 8 in had begun depressed-globose; diameter (estimates only; fruits already to dehisce), mm mm mm columella 5-5.5 long. Seeds 5.2-5.7 long, 3.8^.2 wide, oblong in dorsal view, dorsal-ventrally flattened, rounded at the base, rounded and with a minute nipplelike projection at the apex, microscopically rugulose, shiny; caruncle 0.8-1.0 mm mm and long, 1.6-2.1 wide, tan thin. The epithet to the black stellate trichomes that are scattered atr, s am Mexican throughout the plant. unaware of this feature in any other species of I Croton, and occurrence serves to separate this taxon from all others in western its Mexico. Some areas of the plant actually appear to the naked eye to be infested by a rust, but in fact a proliferation of these black trichomes that causes this illu- it is Webster presence sion. According to the infrageneric circumscription of (1993), the and and of valvate-reduplicate pistillate sepals, eglandular stipules sepals, a stellate Lasiogyne pubescence warrants the placement of Croton atrostellatus in section No known members from western (Klotzsch) Baill. other of this section are tropical Mexico by Webster Mexico (Webster and the only representative given for in 2001), Apart from 1993 conspectus C. tabascensis Lundell. lacking the characteristic his is young black trichomes, tabascensis differs in having hispid stems, leaves that are C. and not bicolored and only moderately stellate-pubescent beneath, sepals that are uniformly pubescent on the inner surface. Also, although supposedly not charac- of the section Lasiogyne, in C. tabascensis the sepals of the pistillate flowers teristic known from only two collections possess small, sessile glands. latus is ( < i Michoacan the subtropical scrub of the Bajio region in northwestern at elevations in from 1800 1900 m. At the type locality grows sympatrically with C. adspersus to it was June and with Benth. and sphaerocarpus H. B. K. collected with flowers in C. It October. fruits in Mexico. Michoacan: Mpio. Euphorbia W. Steinmann, Type: calderoniae nov. V. sp. Dec 2500 m, Cuanajo, Cerro del Burro, pastizal, ladera de cerro, potrero, 3 MICH!). M. Escobedo 756 (holotype: IEB!;isotype: 1985,/. cm Herba annua, prostrata; caules usque ad 20 longi, supra pilosi vel puberuli, mm laminae obovatae infra glabri, teretes; folia opposita, petioli 0.3-0.5 longi, vel cm cm oblongae, 0.3-0.6 longae, 0.2-0.4 latae, basi asymmetricae, rotundatae vel margo pedun- hemicordatae, apice obtusae, integer vel serrulatus; cyathia solitaria, mm mm involucra infundibularia vel fere cylindrica, 0.7-0.9 0.3-1.2 longi, glabri; culi mm longa, 0.6-0.7 interne pubescentia, glandulae circulares vel ovales, ca. lata, 4, mm mm longae appendices ut videtur absentes vel angustae, 0.1 longae, et latae, 0.1 mm ovarium subglobosum ovoideum, Mores staminati 5-8; trilobatum, vel 0.2 latae, mm subglobosa glabrum, 0.3-0.4 longi, bipartiti; capsula trilobata, vel styli 3, liberi, mm mm mm semina ovoidea, 0.8-0.9 ovoidea, 1 .3-1 .4 longa, 1 .5-1 .6 lata; triangula, mm longa, 0.6-0.7 lata. i CONTR. UNIVERSITY OF MICHIGAN HERBARIUM VOLUME 176 24 Prostrate annual from a slender, brown, vertical laprool; stems lew to many aris- em ing from near the base, to 20 long, generally mat forming and extending radially, diffuse to compact, moderate!) to highly branched, mternodes 0.5-2 cm long, terete, pilose to strigulost o puberi enl pubescent only on the exposed surfaces, glabrous on the portions fad the lund hail crisped ed or rarely almost straight, t< \ i i j mm 0.1-0.4 long, while to purple-tinged. Leaves opposite: stipules of parts of the all mm stems similar, 0.2-0.5 long, divide divisions or represented by a n i i mm margined small, triangular laciniately scale: petioles 0.3-0.5 long, glabrous or mm sparsely pilose with spreading white hairs to 0.7 long; blades 0.3-0.6 cm long, cm 0.2-0.4 wide, obovate to oblong, with a prominent mitlvein but the lateral veins inconspicuous, glabrous to sparsely pilose, base asymmetrical, rounded to slightly hemicordate, apex rounded maturity although when frequently acute young, al margin towards serrulate at least the tip but usually entire along the distal 1/2-1/3. mm Cyathia solitary in the distal nodes, peduncles 0.3-1.2 long, glabrous. Involucre mm mm 0.7-0.9 long, 0.6 0.7 wide below the glands, mlundibuliform nearly to cylin- drical, outer surface glabrous, inner surface pilose below the rim; lobes subulate, mm sometimes 0.1-0.3 long, divided, sinus shallow glands a us; 4, ca. 0.1 • i mm long and appendages wide, circular to oval, absent or represented by narrow a mm mm rim long and wavy ca. 0.1 0.2 wide, glabrous, entire to or bilobed, white to Slaminak reddish flowers m.Ci l.racii U n glabrous, exserted ,U >h v> , >| I mm mm, 0.9-1.7 ovary 3 lobed. subglobose to ovoid, glabrous, styles free, 0.3-0.4 3, mm long, biparted to nearly the base, divisions Capsule filiform. 1.3-1.4 long, 1.5-1.6 mm mm in diameter, strongk 3-lo d u e to broadly ovoid, columella 0.9-1.0 h< >s ! mm mm Seeds long. 0.8-0.9 long, 0.6 0.7 wide, tnangulai cross section, the ventral in faces collectively forming a single face, ovoid in dorsal view, blackish to blackish gray, apex micropapilliate, bluntly pointed, base rounded, dorsal keel prominent, blunt, mm uninterrupted, dorsal faces mostly plane. 0.6 smooth; caruncle absent. all. hi si, j,-, I], i i i i i i - i, - , i i / , km (IEB); Mpio.Zinapoouaio.5 SSI do .lorahuam. R~nl mski Mpio. Uruapan,5 km al /6/-/.MII U S al 1 ( ): do Angahuan. on ol Jano ( 'hoi niro. Soto Niinez /.W,S'2 (MEXU). I The specific epii! in baeiela Calderdn de Rzedowski, ( i a researcher at the Institute de Ecologia-Centro Regional del Bajfo and specialist Mexican of plants. She is coeditor of the f-'lora del Bajfo y de Regiones Adyacentes, and one known, but of the nlkr! ><<,,> all ni, .tL-leromae occur within the >q i boundaries of this Floin n< tli > < i i i Michoacan, where found grasslands, humid canyons pine-oak and it is in in forest, scrub vegetation at elevations from 2300 to 2500 m. lowering and fruiting overlap I broadly, and lerlile material has been collected August and December. in — EUPHORBIACEAE 177 Euphorbia W. Steinmann, Type: Mexico. Michoacan: infernidialis V. nov. sp. MEX N km Mpio. La Huacana, along of Los Ranchos, 18°44'N, 37, ca. 1 & o May 101 00'45" W, ± 200 m, 9 2002, V. W. Steinmann, G. Puime B. Vrskovy 2458 (holotype:IEB!). Fig. 2. cm Herba perennis, prostrata vel ascendens; caules usque ad 25 longi, pilosi, mm teretes; folia opposita, petioli 0.3-0.8 longi, laminae variabiles, plerumque oblon- cm cm gae, 0.3-0.5 longae, 0.25-0.35 latae, basi asymmetricae et hemicordatae, apice mm margo pedunculi obtusae, integer vel leviter serrulatus; cyathia solitaria, 1.8-3.3 mm mm involucra campanulata, .2-1 longa, 1.1-1.6 pilosa, glandulae longi; lata, .7 4, 1 mm mm ovales, 0.2-0.4 longae (radialiter), 0.4-0.7 latae (tangentialiter), appendices mm mm semicirculares vel flabellatae, 0.4-0.7 longae, 0.7-1.1 latae; flores staminati ca. 25-35; ovarium trilobatum, ovoideum, versus basim et secus carinas pilosum, styli 3, mm mm 0.3-0.4 capsula ovoidea, 1.5-1.9 longa, 1.4-1.8 liberi, longi, bipartiti; trilobata, mm lata, versus basim et secus carinas pilosa; semina quadrangula, elliptico-ovoidea, mm mm 1.1-1.6 longa, 0.6-0.8 lata. woody Prostrate to ascending perennial herb from a brown, thickened, and tap cm root; stems numerous arising from near the base, to 25 long, internodes to 1.5 cm long, terete, uniformly pubescent around the entire circumference; stems, leaves, peduncles, and involucres shortly pilose with to slightly curved white hairs 0.1-0.2 stiff mm exposed (-0.3) long. Leaves opposite; stipules dimorphic, those of the surfaces of the stem remarkably reduced, inconspicuous, narrowly triangular to subulate, 0.1-0.2 mm long or apparently absent, those facing the ground mostly united into a broadly mm mm triangular scale 0.3-0.5 long with a laciniate-erose margin; petioles 0.3-0.8 cm cm long; blades 0.3-0.5 long, 0.25-0.35 wide, generally oblong but varying to ovate, obovate base asymmetrical and hemicordate, apex rounded, margin or orbicular, mm entire to faintly serrulate. Cyathia solitary at the distal nodes, peduncles 1.8-3.3 mm mm wide below campanulate, long. Involucre 1.2-1.7 long, 1.1-1.6 the glands, mm U- inner and outer surfaces pilose, lobes ca. 0.2 long, triangular, sinus shallowly mm mm shaped, extending ca. 1/5 the involucre, glands 0.2-0.4 long (radially), 0.4-0.7 mm mm wide (tangentially), oval, appendages 0.4-0.7 long, 0.7-1.1 wide, semicircular glabrous or puberulent on the back, entire to shallowly wavy, white to flabellate, fading pink. Staminate flowers 25-35, bracteoles numerous, divided and pilose ca. mm, Gynophore towards the glabrous, exserted 1.3-3.2 ovary conspicuously 3- tip. with concentrated towards the base and along the lobed, ovoid, pilose hairs stiffly mm from keels; styles free, 0.3-0.4 long, biparted 2/3 their length to nearly the base, 3, mm mm divisions clavate. Capsule 1.5-1.9 long, 1.4-1.8 in diameter, strongly 3-lobed, ovoid, broadest towards the base, pilose with straight, white, erect hairs 0.1-0.2 stiffly mm mm long, these concentrated towards the base and along the keels. Seeds 1.1-1.6 mm long, 0.6-0.8 wide, quadrangular in cross section, row v ptic-ovoid in dorsal n;.* ,11 view, base obliquely truncate, apex pointed, reddish-brown, with a prominent dorsal mm sometime low keel, dorsal faces 0.5-0.7 lightly rippled, with a but conspicu- tall, ous longitudinal ridge, nearly plane to slightly convex, ecarunculate. The Michoacan and specific epithet refers to the Infiernillo region of southern man-made around Guerrero. This area centered the Presa Infiernillo, a reservoir is damming resulting from the of the Rio Balsas just downstream from confluence with its CONTl m itm the Rio Tepalcatepec. The only known collections were made few kilometers just a wah from body inland of belongs Chamaesyce. this in inj udiali to subg. * i>> !• >, / -> The presence of ovaries with hairs restricted to the base and along the keels suggests a relationship with E. U u< with K h S .art Boiss. and E. mendezii Boiss., •.< l« < < \ i I , » and both of these species occur in the vicinity. Yet, these species possess strongly dor- siventrally flattened stems with long spreading hairs along the margin, larger stipules, and cyathia dense and congested primary in lateral e stems. In contrast, sh< oJ »ot: has stems without educed injerniriialis terete hi- spi. i«l- l< II ' : ! f I FIG. Euphorbia 3. I duliform stipules (with 1< dissected, xlO.F. Seed, d( This species dedicated Emily Euphorbiaceae and id Lott, enthusiast is a J. leading authority on the pKii ropical d forest of western Mexico. li i She collected the species at the type locality in I9.S3. Euphorbia lottiae belongs to Agaloma member and ocymoulea McVaugh subg. is a of the L. complex. (1993) /:. provided a general overview ol this group, recognizing three varieties of Euphorbia ocymoideaw&x.hi McVaugh, ocxmoidetL and var. var. subreniformis il , ) Watson) McVaugh. McVaugh (S. agree with concerning the taxa recognized as well I STEINMANN: EUPHORBIACEAE 2005 181 as the characters used to distinguish them; however, differ with him in the belief I opposed that they are best treated as distinct species as to infraspecific taxa. These, together with Euphorbia probably form a monophyletic group and are indeed lottiae, somewhat them very similar, so their rank arbitrary. prefer to recognize as species is I more for various reasons. All are morphologically distinct from each other by than a There and single character. are ecological differences as well, with E. lottiae E. ocy- moidea growing low Watson at elevations in tropical vegetation, E. subreniformis S. occurring at higher elevations in mostly pine-oak forest, and E. bamesii (Millsp.) Oudejans occurring in both such habitats. Furthermore, their ranges are independent, and they maintain their distinctiveness even when growing in the same general area. McVaugh's Euphorbia would come and some In 1993 key. out to E. bamesii, lottiae specimens were initially identified as such. Although these two share consistently and 5-glanded involucres, glabrous ovaries capsules, slender to capillary gynophores, and number The eglandular branchlets, they differ in a of features. following couplet serves to distinguish them. Young stems drying terete; long spreading hairs restricted to the outer surface of the involucre; 1. base of the leaf blade attached to the adaxial side of the petiole and not continuous over it; mm peduncles 0.5-1 (-! long nous; styles 0.3-0.4 long. E. bamesii 5) II il \^ I - ii.ii! ding hairs sometimes present on the stems and leaves in addition to the i. - | i involucres; base of the leaf blade continuous over the adaxial side of the petiole and thus appear- mm ing minutely subpeltate; peduncles 2-9 long, villous at least towards the base: styles 0.5-0.7 Euphorbia lottiae also appears to differ from the other species of the complex by habit. almost turgescent and rather hydrophytic in character, whereas its It is its more As close relatives possess wiry and fibrous stems. far as can the branches I tell, of the others are mostly erect to ascending. In contrast, the branches of E. lottiae are weak, primarily prostrate to decumbent, and prolifically sprawling. This species is known number from a small of collections gathered at four localities in the valley of the Rio Tepalcatepec in southern Michoacan and adjacent Jalisco, where occurs in it thorn forest and tropical deciduous forest at elevations ranging from 300 to 500 m. It from grows Guerrero; the type only about 3 kilometers the likely also in locality is border and with vegetation similar to that of vast expanses in adjacent Guerrero. It one and thrives during the brief rainy season, but of the plants to wilt die as first is known made the rains diminish and the soil dries. All collections were from early September October. to late nov.— Jatropha jaimejimenezii W. Steinmann, Type: Mexico. Michoacan: Mpio. V. sp. MEX N km km Arteaga, along 75 (by road) of Arteaga and S of 37, ca. 1 El Descansadero, 18°38'41 "N, 101°58'10"W, ± 300 m, shallow ravine on the rocky hillside above the highway, open thorn forest with columnar cacti, 3 & Aug 2001, W. Steinmann E Carranza E. Perez 1810 (holotype: IEB!; V. ARIZ! MICH! DAV!). isotypes: Fig. 4. m Frutex usque ad 2 (-3) altus, monoecius; folia alterna, stipulae in lacinias mm cm laminae glanduligeras dissectae, 1-2.5 longae, petioli 0.3-1.2 (-1.5) longi, cm cm plerumque oblongae, 1.0-3.8 longae, 0.8-3.6 variabiles, (0.7-) (0.6-) latae, margo apice obtusae, basi obtusae vel truncatae, glanduloso-denticulatus; inflores- cm centiae cymosae, dichasiales, 1.5-4.5 longae, bracteae ellipticae vel spathulatae, mm mm margo 2-9 florum longae, 0.5-2.5 latae, pilosae, glanduloso-denticulatus; CONTR. UNIVERSITY OF MICHIGAN HERBARIUM VOLUME 182 24 mm staminatorum pedicelli graciles, 3.2-5.5 longi, pilosi, calyx imbricatus, lobi 5, mm mm 13 ovati, oblongi vel 3.2-5.5 longi. 03) corolla imbricata, elliptici, liberi, lati, mm mm lobi spathulati vel oblongi, basi connati, 5.4-6.2 longi, 1.7-2.2 apice 5, lati, mm columnam reflexi, stamina in connata 3.8-5.2 longa, antherae oblongae, 1.1-1.4 5, mm mm longae; florum pistillatorum pedicelli 1.8 -3.5 longi, villoso-pilosi, calyx mm plerumque imbricatus, lobi obovati vel spathulati, accrescentes, 6.5-11.8 longi, 5, mm mm mm 2.6-5.4 corolla imbricata, lobi 5 ovati, 5.3-6.0 longi, 2.0-2.5 lati, (6), lati, apice reflexi, ovarium triloculatum, oblongo-ovoideum, basi planum, glabrum, styli 3, mm cm cm filiformes, 3.1-4.3 longi; capsula oblongo-ovoidea, 0.9-1.2 longa, 0.7-0.8 mm mm lata, trilobata; semina oblonga, 6.5-7.3 longa, 3.9-4.4 lata, laevia, caruncula mm mm cucullilormis, longa, 2.7-3.2 1.4 1.9 lata. m Shrubs to 2 (-3) multibranched from near the base and highly branched tall, above, drought-deciduous, with copious reddish monoecious; stems the latex, villous, mm hairs nearly straight, 1.1-2.2 long, multicellular, white and sometimes purplish at the base, lower layer of shorter appressed to recurved hairs also present, branches soft-wooded and iH«»r.dhd and aliened exfo- bl< i> II- ( il I < I i liating in thin slivers. Leaves alternate, mostly congested on short, arrested shoots; mm represented by mul im stipules irregularly tinctures 1-2.5 hi< mi, I , i i cm long; petiole 0.3-1.2 (-1.5) long, with pubescence like that of the stem; blade cm cm membranaceous, (0.7-) .0-3.8 long, (0.6-) 0.8-3.6 wide, with basal attachment 1 to the petiole, mostly oblong but varying > elliptic, rarely rotund or shal- fr< tt< > i lowly palmately 3-lobed, palmately 3-veined from the base with the midvein more prominent than the laterals, apex obtuse, base truncate to obtuse, hirsute to villous on both surfaces, margin in uleb denl cul clh ending stipitale glands ith U in it it - mm om 0.1-0.2 long, in age the gland tim( shed and the margin appearing entire. cm Inflorescences many-flowerei .5-4.5 long, entirely staminate or les lie! i 1 with pistillate flowers at the lower first and second nodes, pistillate flowers also sometimes solitary on the short shoots, axis with pubescence as on the stem but the hairs mm mm cm tending to be shorter, peduncle 0.4-2 long, bracts 2-9 long, 0.5-2,5 wide, narrowly elliptic to spathulate, thinlv pilose, the margin as the leaves. Staminate in mm on flowers slendei pilose pedicels 5.5 loi 5 I : mm m 3.2-5.5 long, 0.9 2.3 iwidi o ilon 4\ unequal, free to il « I li I | the base, apex mostly obtuse, rarely acute, pilose to puberulent on the outside, mostly glabrous within, rarely filiate with stipitate glands oroibi imbricate, lobes ,v • mm mm 5,5.4-6.2 long, 1.7-2.2 wide, broadly spathulate to oblong, united 1/5 to 1/4 their length, apex obtuse, glabrous to minutely puberulent, often puberulent-ciliate, red-pink, free portion strongly overlapping and appearing united towards the base mm but clearly separate above, tips rcflexcd at anlhesis: disk glands 5.0.6-1.1 long, mm separate, ± oblong, dark brown; stamens 5. united into a column 3.8 5.2 long, free mm mm, for 0.3-0.8 anthers 1-1 long, narrowly oblong, sometimes with .4 a filiform 1 . mm 1mm appendage 0.5-1.7 long, m.» het\ n mttius, outer whorl of stamens ill. i mm on absent. (lowers Pistillate relatively stout, villous-pilose pedicels 1.8-3.5 long; calyx imbricate, lobes strongly unequal, generally obovate 5. to spathulate, rarely mm mm oblong or ovate, accrescent in fruit and expanding to 6.5-1 long, 2.6-5.4 .8 1 wide, apex obtuse or acute, thinly pilose on both surfaces, stipilate-glandular along mm mm the margin; corolla strongly imbricate, lobes 5 5.3 6.0 long, 2.0-2.5 wide. (6), ovate, united only at the extreme base, apex obtuse, thinly pilose on both surfaces, ud pn ,md 'nl ni ! ais lalhng as a »il< iii il. i, i i i i . I i i i single unit, disk annular, undulate and shallowly lobed; ovary 3-locular. oblong-ovoid mm with a fiat base, inconspicuously 3-angled, glabrous, styles 1—1.3 long, filiform. 3, 3.

New Euphorbiaceae from Mexico. II

Similar New Euphorbiaceae from Mexico. II