THYMELAEACEAE. — WIKSTROEMIA 537 



18. Wikstroemia alternifolia Batalin in Act. Hort. Petrop. XIII. 99 (1893). 



Hemsley in Jour. Linn. Soc. XXVI. 397 (1894). —Pritzel in Bot. Jakrh. XXIX. 



480 (1900). 



Kansu : " vallis fi. Hei-ho supra pagum Hun-nei-ku" July 24, 1885, G. N.Poianin 

 (ex Batalin). 



19. Wikstroemia Pampaninii Rehder, n. sp. 



Wikstroemia alternifolia Pampanini in I^uov, Giorn. Bot. Ital. n. ser. XVII. 

 675 (non Batalin) (1910). 



Frutex 0.5 v. ultra altus, ramis gracilibus erectis; ramuli teretes, hornotini, 



praesertim apicem versus, dense pilis albidis subaccumbentibus obtecti, annotini 



glabrescentes ut vetustiores fusco-purpurei; gemmae subglobosae, conspicue 



albido-tomentosae. Folia omnia altema, membranacea, elliptica v. obovato- 



elliptica v. anguste elliptica, utrinque acuta, margine, in sicco saltern, revoluta, 



1-2 cm. longa et 0.4-0.8 lata, utrinque pilis longis accumbentibus ad costam subtua 



densius vestita, fere concoloria, costa media subtus elevata, nervis paucis incon- 



epicuis; petioli circiter 1 mm. longi, dense pubeseentes. Flores sessiles in spicis 



dense pilosis terminalibus pluri- v. multifloris et axillaribus saepius paucifloris in 



apice ramulorum paniculas angustas foliatas foliis apicem versus decrescentibua 



formantibua; perianthii tubus dense adpresse pilosus, 3.5-4 mm. longus, lobis ovali- 



bus 4 extua pilosis 1.5 mm. longis; antherae 8, oblongae, 0.8 mm. longae, filamentia 



vix 0.2 mm. longis, superiores paullo exsertae, inferiores supra medium tubi 



affixae; pistillum 2.5 mm. longum, ovario pilis adpressis dense obtecta, stylo brevis- 



Bimo, stigmate capitato pilis longis id subaequantibus fere occultato; squamae 



disci 2, circiter quartam partem ovarii aequantea, una linearis, altera latior, 



inaequaliter plus minusve 2-3-dentata. Fructus immaturus tantum visus, pubes- 

 cens. 



Northern Hupeh: "monte Triora," alt. 1950 m., July 3, 1907, C. Silvestri 



(No. 1540, type); '* monte Niang-niang," alt. 1950 m., July 1907, C. SilvestH 

 (No. 1541). 



This species seems most closely related to W. alternifolia Batalin, which differs 

 according to the description in its gray branches, in the narrower leaves, which 

 are about twice as long, in the 12-14 mm. long flowers and in the solitary disk- 

 scale about half as long as the ovary. The hairs at the apex of the ovary are in 

 W. Pampaninii remarkably long and nearly hide the stigma, which is slightly ovoid 

 or obovoid in shape. 



20. Wikstroemia holosericea Diels in Not. Bot. Gard. Edinburgh, V. 286 (1012). 

 Yunnan: Descent of the Yangtsze from Chung Tien, alt. 3000 m., September 



1904, G. Forrest (No. 13, ex Diels). 



According to Diela this species has no disk-scales, which makes it doubtful 

 whether it belongs in the genua Wikstroemia. 



21. Wikstroemia dolichantha Diels in Not. Bot. Gard. Edinburgh, V. 286 (1912). 

 Yunnan: Chien-chuen and Hoching valleys, alt. 2100-2700 m., September 



1904, G. Forrest (No. 133 ex Diels); IVIengtsze, grass hills, alt. 1400 m., ^. Henry 

 i^o. IQZIJ; slender shrub 0.6-1 m. tall, flowers yellow). 



Henr>''s specimens differ from the original description in their more copious 

 pubescence, though the different specimens distributed under No. 10277 show 

 great variation in this respect; in one specimen in the herbarium of the Arnold 

 Arboretum the leaves are densely pubescent on both sidea, wliile in the other they 

 are less pubescent and narrowly elliptic; in the one specimen in the herbarium 

 of the New York Botanic Garden the leaves are nearly glabrous below, but thinly 

 pubescent above and also narrowly eUiptic. 



