AULONEMIA AND DAVID-SMITHII RUBRALIGULATA A. (POACEAE: BAMBUSOIDEAE: BAMBUSEAE: ARTHROSTYLIDIINAE): TWO NEW SMALL-FLOWERED FROM PERU SPECIES Emmet Judziewicz Geisthardt Eric J. J. Stevens Point, Wisconsin 54481, U.S.A Stevens Point, Wisconsin 54481, U.SA. Waas Sepsenwol M. Christine Sol Robert W. Freckmann Herbarium Department of Biology and Museum ofNatural History University ofWisconsin-Stevens Point Stevens Point, Wisconsin 54481, U.S.A. Stevens Point, Wisconsin 54481, U.S.A. [email protected] ABSTRACT RESUMEN INTRODUCTION The woody bamboo genus Aulonemia Goudot (Poaceae; Venezuela Qudziewicz Judziewicz al, 1999) in its undescribed throughout the Andes (Clark 1995; et diversity & & Londono Clark 1997, 2007; Judziewicz etal. 1991; Judziewicz Riina 2006), Colombia (Clark 1990; et al. et & & Clark Judziewicz and Oudziewicz 2011; et al. 2010, al- 2013), Peru Oudziewicz TyrreU 2007) Bolivia 2011). panicles of small spikelets and presence of leaf sheath effuse Several Peruvian species are notable for their McClure (Huanuco, Cusco) has robust foliage leaf blades niarginal hmbriae. Aulonemia 0- Presl) parviflora and cm cm strongly tesseUate abaxially, extraordinarily long, (21-)35-52 long and (3-)3.7-5.8 wide that are mm hmbriae on non-sphtting and confluent, its foliage leaf pale brownish 40-80 papery, inner long, ligules much San Martin) has McClure (Loreto or smaller On sheath humilUma margins. the other hand, A. (Pilg.) Journal of the Botanical Research Institute of Texas 7(1) 8-17 cm long and 0.7-1 cm wide with sheath margins bearing regularly non-tessellate foliage leaf blades mm 35-50 and inconspicu- (non-confluent) marginal fimbriae, terminal sheath fimbriae long, spaced, discrete may now be added two new To group of “small-spikeleted” taxa with marginal leaf sheath fimbriae this & and (Amazonas, Cajamarca, Junin) has Peruvian species (Table Aulonemia mbraligulata]udz. Geisthardt 1). mm cm cm 20-45 blades 15-25 long and 0.7-2.3 wide (that are not elongate, reddish inner ligules long, foliage & Waas has and pectinate-fimbriate sheath margins, while A. david-smithii Judz. (Pasco) in- at all tessellate), cm cm conspicuous inner ligules, foliage leaf blades 25-38 long and 27-3.6 wide, sheath margins with densely mm matted confluent fimbriae (these ultimately splitting) and terminal sheath fimbriae 10-15 long. Neither of & treatments of Peruvian grasses (Tovar 1993; Brako Zarruchi 1994). KEY TO THE ANDEAN OF AULONEMIA SPECIES WITH MARGINAL FIMBRIAE AND EFFUSE PANICLES OF SMALL, SLENDER SPIKELETS mm Plant parts were measured using a ruler, and a portion of the abaxial leaf blade epidermis (from the central, non-marginal part of a well-developed blade) from one sample of both species was examined using air-dried, uncoated, untreated material in a Hitachi S3400 scanning electron microscope; specimens were examined from MO, the following herbaria: F, K, NY, US, UWSP, and WIS. P, mm culms apparently than 1; less 5 in diameter, glabrous. Midculm branching and pattern culm leaves not seen. Foliage leaves glabrous and smooth; sheaths strongly keeled, the midnerve prominent near the summit, the margins papery, chartaceous, and prominently cross-puckered on on the lower leaves, upper the leaves the sheath margins breaking up into very dense, curling, orangish-brown, prominent fimbri- mm 3-5 ae long, each fimbria attenuate into a mass of interwi^^^^ 3heath summi mg ac auricles, but with mm erect, brownish, hispidulous fimbriae 10-15 long; outer varying ligule nm mm from an indumte ca. 1 long to (one one an mm side) ovate, stramineous, shiny 2-4 flange inner long; igule not evident, not large mm if present; pseudopetioles 2-4 cm long; blades 25-38 cm long, 2.7-3.6 wide, TT ^°"g-»cuminate, the base obtuse and symmetrical, moderately strongly tes- mm acute, paleas 1.8-3 long; flowers and not seen. fruits Leaf I Judziewiaetalj Popinoe.— Abundant; globose to slightly compound; 4-6 pm in diameter. Stomata.-Common; stomata alternating; stomatal rows 4-5, adjacent to costal branched papillae present each at of the comers, giving jparatus a plus sign shape, (+) Interstomatal pm cells.—ca. 20-30 long, outline indeter papillae U present, abundant, globose compound, ,htly uniform in size. Long Cells.—Dimensions difficult t 133 30-50 Abundant, 4/10,000 mostly in intercostal zones, but present in costal zones; pi Pricfeles.— ca. pm candy 30-50 wide, tapered to a sharp like a kiss. tip, long, due dense Cells.—Difficult to discern to papillae. Short pm pm Microhairs—2-celled, 55-60 pm long; basal cell 28-33 long, 7-10 wide; apical cell deflated, c pm 30 long. marginal fimbriae (densest in the densely matted orangish david-smUhii distinctive in its Aulonetnia is with panicle summit of the leaf sheath, effuse Aulonemia queko Goudot -like flange at the well as the genus), as known The from just a single collec- species and somewhat abaxially tessellate leaf blades. is small spikelets, Oxa- de San Matias in summit north-south trending Cordillera made on the ridgetop cloud forest of the tion DavidN.Smith(1945-1991),assiduous collector named an elevationof910m.ltis after pampa, Peru,at Pasco, 75n2’W, but Smith gave the longitude as Garden. Missouri Botanical Peruvian and Bolivian flora for the of the summit was probably made at the of the cordillera at from his notes and label description, the collection field m lowland 325 elevation. 75°12’ would place the collection in forest at Google Earth); 75°06’W (according to many and epiphytic included ferns collections from that site From Tropicos (accessed 24 April 2012), Smith’s but than6mtall.Brako&Zarucchi(1994)citedSmith2045a5A.humtIlima, withno vegetation greater shrubs, summit has shorter sheath marginal fimbriae, and confluent known lacks only from the type that species is fimbriae, and has shorter, narrower leaf blades. & 5.„jo«d. 4-5). PERU. AdoMMnia rubraUgulat, GeislharA. sp. nov. (Figs. 7^^ Judz. Culm toSmlong, smooth. up ca.3nunmdiameter, reportedly cute woody bamboo; Scrambling or climbing branches single^divergent Midculm nodes bearing appLntly Lferenriated from foUage leaves. leaves not abundant recurved margins with the wUh strammeous to greenish, striate, Foliage leaves sheaths glabrous, when young confluent tnto a mm 7-10 per cm, or 2-4 long spaced about stramineous pectinate fimbriae mm tndurate lot^, and hmbriae; outer ligule ca. 1 summit lacking auricles membrane; chartaceous sheath ,nnerhgule20^5 1.5-3.5t^ long; shiny flap stramineous, intoanovate «eous w^ stramineous, prolongedon one side fadmg when young to mm reddish glabrous, acute, membranous, linear-lanceolate, long, a^;pseudopetioles2-3mmlong;blades.5-23cmlong0«^^^ rg\r:s:bt:s;s:c— branches^ ovotdpamcle; cm an open, 8-20 PedLle toScm terminal, tall, up mflorescence long mmwi e, smooth,themainonesascendingata45°angle.Spikelets(12-)17-25mmlong,ca. not seen, with2.mmaturest«mas,rru.t long; pistil sumens3,theimmatureanthersca.lmm apex; doM dammed Te™ for.,,. 14 J„„ 1978, in (MO. US, UWSP). Pm,. 7828 I>t9z&m.rdl» Coalk. '^teMl,P„ve9i,,t500-19<»m,3-4jmi929.dens.lo««,Kiiltp&S»*259®O<7.US). sim and exhibited a examined Gentry 22898 (MO) was also et al. new Two species of Aulonemia from Peru Judziewicz et al.. present, abundant, globose to indeterminate; papillae 40-50 outline Interstomatal cells.— Ca. iim long, compound, uniform slightly in size. due dense papillae. Long Cells.—Dimensions difficult to discern to pm pm 40-50 wide, tapered to a sharp tip, like a 35-45 Common, 3-4/10,000 pm^; long, Prickles.— ca. due dense papillae. Short Cells.—Difficult to discern to pm pm 45-50 long, 7-l( ceU 75-80 basal Microhairs.— long; 2-celled, pm 30 long. — None Macrohairs. seen. r • northern and centra Peru at ei endemic cloud forests in Aulonemia to rubraligulata is km only 8 from Ecaudor, since one collection is t 1500-2000 m; may be found in neighboring eventually it ligule20-45mmlongis unique in the gen inner reddishfwhen fresh) border The prominent of that country. & humilhma, but that species Smith 25959 as A. and prompted Tovar (1993) cited Killip the specific epithet. summit sheath hi elongate leal inconspicuous ligules, known has only from smaller of stature, the type, is briae and with fewer smaller spikelets florets. ACKNOWLEDGMENTS WethankUWSPsmdentEvaC.HathawayforthelinedrawingsandGerritDavidseCMCTfortheloanotspeci- rmew.Gem.Dav.dse (MO) and SmUh,andhU helpful on David mens, withobtaininginformation assistance Lynn Clark (ISC) provided valuable reviews. references gymnosperr and plants flowering e Brako, Catalogue of L. and Zarucchi. 1994. tl J.L. Monogr. Syst. Bot. 45:1 -1 328. CuRK, LG. 1995. and distribution of tf Diversity N Garden, Bronx. Pp. York Botanical Neotropical et and Conservation of I al., eds.. Biodiversity new Oambuseae), a spe- Bambusoldeae: xinmfiaetPox^^-. Cet” Aulonemia LG, CD. Tvmeil. 2007. JuDzinncr, .no 1 new Clark, LG., X. LoNDofJo, and M. KoeAYASHi. 1 997. Aulonemia bogotensis (Poaceae: Bambusoideae), a species from the Cordillera Oriental of Colombia. Brittonia 49:503-507. surface view. Bothalia 12:641-671. JuoaEWKz, EJ. AND LG. Clark. 201 Aulonemia cochabambensis (Poaceae: Bambusoideae: Bambuseae: Arthrostylidiinae), 1 . new an anomalous species from Bolivia. Brittonia 63:375-378. JuoziEwcz, EJ., LG., Clark, X. LoNoofto, and MJ. Stern. 1999. American Bamboos. Smithsonian Institution Press, Washing- JuDZiEwo, EJ., G. Davidse, and LG. Clark. 991 Six new bamboos from the Venezuelan Guayana. Novon :76-87. 1 . 1 M JuDziEwrcz, EJ., EJ. Geisthardt, LD. Gibbons, D.C. Ziegler, J. Zueger, and S. Sepsenwol. 201 Three new Andean species of 1 . Aulonemia (Poaceae: Bambusoideae: Bambuseae) with sheath Texas 5:485^98. auricles. Bot. Res. Inst. J. JUDZIEWICZ, EJ., X. LoNDOfio, AND LG. CuRK. 2013. Two new northern Andean species of Aulonemia (Poaceae: Bambusoi- and JuoziEWKZ, EJ. 2006. Aulonemia new R. Riina. dinirensis (Poaceae: Bambusoideae: Bambuseae), a dwarf Venezuelan species from the easternmost Andean Bamboo paramos. 19:11-15. Sci. Cult. JuoziEwicz, EJ., E.L Shea, anoT.M. Wayda. 2010. Two new Bolivian species of Aulonemia (Poaceae: Bambusoideae: Bambu- seae). J. Bot. Res. Inst. Texas 4:569-579. T D C.D. L 2007. y Tovar, 0.1 993.