EDINB. J. BOT. 53 (2): 275-280 (1996) 275 SHORT COMMUNICATIONS A new species of Hytnenidium (Unibelliferae) from Kansu Province, China Traditional treatments, for instance that adopted in Flora Reipublicae Popularis Sinicae 55( 1) (Fu Kun-tsun & Ho YehChi, 1979), would have placed the following species in Pleitrospermum Hoffm. Indeed, the material that we used as the type for our description (Rock 12703) was cited by C. Norman (1933) and later by Shan Ren-hwa (1937) under Pleurospermum candollei (Wall, ex DC.) C.B. Clarke. C. Norman commented that his determination was made 'with some hesitation as the specimen for study is very young', noting some differences from the Indian material, and Shan Ren-hwa regarded this Kansu 'Pleurospermum candollei' as a novelty for the Chinese flora. True P. candollei (which we treat as the type species of the separate genus Hymenolaena DC.) is in fact distributed very distantly from Kansu Province, and furthermore the Kansu plant has not been included under any name in Flora Reipublicae Popularis Sinicae. Later Fu Kun-tsun, in Flora Tsinlingensis (1981), treated Rock 12703 as P. pulszkii, and this is the closest species to the taxon being described here (the differences are noted below). However, following the earlier treatment of Pleurospermum for Flora Reipublicae Popularis Sinicae (1979), Fu Kun-tsun (1981) regarded P. kansuense H. Wolff as a synonym of P. pulszkii. If this is so, and if the specimen Rock 12703 is neither Hymenolaena {Pleurospermum) candollei nor P. pulszkii, the name P. kan- suense might have priority for the species. However, we cannot agree with the identity of P. pulszkii and P. kansuense nor with the interpretation of the specimen in question as P. kansuense, despite the description of both species from the same region. We checked an isotype of P. kansuense ('China, Kansu: moist grassy slope, Dar Pan, near Sining, alt. 3000-3350m, 26 vii 1923, R.C. Clung 650' (UC)). and there are some clear differences between the two taxa (see Table 1). Thus we describe here a new species, nearest not to P. kansuense but to P. pulszkii. Hvmenidiuni pachycaule Pimenov & Kljuykov, sp. nov. Affinitas: A specie affini Pleurospermum pulszkii Kanitz (revera species generis Hvmenidium, sed combinatio congruens legitima adhunc not proposuit) caulibus crassis. lobis terminalibus foliorum ovatis (non lanceolatis) vaginis foliorum caulino- rum superiorum bractearumque triangulatis differt. Fig. 1. Typus: China 'Central Kansu. Lien hoa shan: high rocky alpine meadows. Alt. 11500ft. N 12703. 14-20 July 1925. J. F. Rock7 (E). Perennial, apparently monocarpic. Root unknown. Stems to 30cm tall, thick, at the base 1.8cm in diam., terete, finely striate, glabrous, branched only above, under umbel, branches to 9, more or less close together, somewhat verticillate. Basal leaves with broad-triangular sheaths. Petioles in transverse section shaped like a scythe. Laminas to 7 x 4cm, ovate, bipinnate, at the margin somewhat shortly scabrous; 276 SHORT COMMUNICATIONS TABLE 1. The diagnostic differences between Hvmenidium pachrcaule and Pleurospermum kansuense. Character Hymenidiwn paehyeaule Pleurospermum kansuense Stems Thick, up to 1.8cm in diameter Thin, up to 3 5mm in diameter Basal leaf Sessile With petiolules up to 1.5cm long segments Branches Up to 9, more or less close Alternate (1 3) together under umbel, somewhat verticillate Bracts of central Similar to upper cauline leaves, Linear, usually entire, rarely umbel pinnatifid toothed FIG. 1. Hymenidium paehyeaule Pimenov & Kljuykov sp. no basal segments sessile, to 10mm long by 5-6mm broad, ovate or obovate, at the margin with large teeth, obtuse. Cauline leaves mainly in lower part, as well as under umbel close together, similar to the basal; upper leaves with pinnatifid or bipinnatifid laminas, without petioles, their sheaths broad-triangular or broad-ovate, membra- nous, with distinct nerves. Central umbel large, to 15cm in diam., rays 20. rather unequal, to 6-9cm long, angle-ribbed. Bracts of central umbel numerous, similar to upper cauline leaves, but with smaller lamina, commonly pinnatifid. Lateral umbels SHORT COMMUNICATIONS 277 smaller than central one. to 6cm in diam., with numerous entire, broadly oval or oval bracts, all white-membranous, at tip with small pinnate lamina. Partial umbels to 50-flowered, bracteoles subequal, oblong or oblong-ovate, at the base cuneate, entire, at the margin irregularly toothed, short-scabrid. Calyx teeth prominent, tri- angular. Petals rose-purple, to 2mm long, spathulate, almost plane, at the base with long claw. Ovaries tapered to base, narrowly ribbed. Stylopodia conic. Immature mericarps in transverse section with dorsal vittae 3-4 in valleculae, commissural vittae 6. vittae in ribs, solitary, sometimes inconspicuous. Mature fruits unknown. References FU KUN-TSUN. (1981). Umbelliferae. In: Flora Tsinlingensis 1(3): 369-432. FU KUN-TSUN & HO YEHCHI. (1979). Plewospermum Hoffm. In: Flora Reipuhlicae Popularis Sinicae 55( 1 ): 133-184. NORMAN. C. (1933). Umbelliferae. In: REHDER. A. & KOBASKI. C. E. An enumeration of the herbaceous plants collected by J.F. Rock for Arnold Arboretum. J. Arnold Arbor. 14(1): 23-25. SHAN REN-HWA. (1937). Studies of Umbelliferae of China. II. (Apioideae: Scandicineac. Coriandreae, Smyrnieae). Sinensia 8(1): 79 92. M. G. PIMENOV & E. V. KLJUYKOV. Botanical Garden. Moscow State University, 119899 Moscow, Russia Further new names in Selago The purpose of this note is to validate new names in Selago (Scrophulariaceae) and thus expedite the return of specimens received on loan. A full revision of the genus will follow in due course. Selago dolichonema Milliard, sp. nov. a 5. venosa Hilliard bracteis angustioribus (1.8-2.6 x 0.6-lmm, nee 2.1-3.5 x 1.2-2mm). bracteis dorso ad basin pubescentibus (nee glabris) et +levibus (nee venis valde elevatis) calyce saepissime breviore (1.5-2mm longo. nee 1.8-2.6mm) distinguitur. Type: South Africa. Cape. Clanwilliam div., Middelberg Plateau [Cedarberg], xii 1939, Esterhuysen 2470 (holo. BOL, iso. PRE). Selago dolosa Hilliard, sp. nov. a S. corymbosa L. foliis plerumque brevioribus (2.5-7mm nee 5-12mm) et, saltern primariis, brevioribus in proportione latitudinis (ratione 2.5-7:1 nee 10 24:1). glandulis immersis exceptis glabris (nee pilis in mar- ginibus et interne in costa praeditis), costa plerumque invisibili (nee in pagina inferiore prominente), bracteis latioribus (0.7-1.25mm nee 0.4-0.7mm) differt. A S. punctata Rolfe bracteis 1.8 2.6 x 0.7-1.25mm (nee 3-3.5 x 1.4-1.8mm). obtusis (nee subacutis). corollae tubo 1.5-1.8mm longo (nee 2.2-3mm) distinguitur. Type: South Africa, E Cape, 3225 DA. Somerset East, Auret Drive on south face of Boschberg, 30 xi 1977, Hilliard & Burtt 10785 (holo. E).