RHAMNACEAE. — BERCHEMIA 217 



normales. Folia papyracea, plerumque elliptica v. ovata v. interdum 

 ovato-rotunda, basi rotunda v. subcordata, apice plerumque obtusa 

 V. rotunda, distincte mucronulata, supra viridia, glabra, subtus 

 pallida, distincte papillosa, nervis utrinque (6-)8-10 instructa, mi- 

 nora et latiora 2-2.5 cm. longa et 1.3-2 cm. lata, cetera 2-4.5 cm. longa 

 et 1-2.7 cm. lata; petioli 2-5 mm. longi, supra pilosi. Inflorescentia 

 pseudo-racemosa, in apice ramulorum lateralium 1-18 cm. longorum 

 terminalis, glabra; flores 2-5 conferti, flavescentes, glabri; alabastra 

 triangularia, acuta; pedicelli floribus aequilongi v. paullo longiores; 

 sepala late lanceolata, sensim acuminata, petalis obovato-oblongis 

 paullo longiora; ovaria stylo satis longo coronata. Fructus ignotus. 



Western Hupeh: Patung Hsien, thickets, alt. 300-1150 m., July 

 1907 (No. 3384; scandent bush 3-4 m., flowers yellowish); Changlo 

 Hsien, thickets, alt. 300-1000 m., June 1907 (No. 3385; scandent 

 shrub, 2-5 m., flowers greenish- white) ; Nanto, glens, June 1900 

 (Veitch Exped. No. 1179). Eastern Szech'uan: Wushan Hsien, 

 A. Henry (No. 5283). Yunnan: Szemao, alt. 2000 m., A. Henry 

 (No. 10376^). 



The numbers quoted above seem to agree very well with each other, but I am 

 not quite convinced that they truly represent Franchet's species, which I know 

 only from the rather imperfect description and without having seen the tyije speci- 

 men my interpretation remains somewhat doubtful. The type was found by 

 Delavay in Yunnan " in silvis ad Hee-chan-men supra Lankong; Fl. 25 maj. 1888 " 

 and Franchet says: " Espece assez bien characterisee par sa grappe courte et 

 cylindrique." 



Here may be added the description of a new variety not collected during the 

 Arnold Arboretum Expeditions. 



Berchemia yunnanensis, var. trichoclada Rehder & Wilson, n. var. 



A typo recedit ramulis rhachibusque inflorescentiae et petiohs supra breviter 

 dense villosis. 



Western Szech'uan: Mt. Omei, July 1904 (Veitch Exped. No. 4777; shrub 

 2 m. tall). 



This variety is well characterized by the pubescent branchlets, otherwise it 

 agrees with the specimens referred to B. yunnanensis by Schneider, who did not 

 see this number. The leaves of this new variety are rather small, 1.5-2.5 cm. 

 long; the flowering branchlets are short and straight usually 4-6, occasionally to 

 9 cm. long including the inflorescence the leafless part of which is rather dense- 

 flowered and from 2 to 4 cm. long. In its pubescent branchlets this variety agrees 

 with B. lineata De CandoUe, but that species has much smaller, very short-petioled 

 leaves, and the flowers are in axillary few-flowered cymes at the end of the branches, 

 not in elongated spikes. A. R. and E. H. W. 



It seems rather difficult to limit the different species of this genus without hav- 

 ing seen both flowering and fruiting branches of the same shrub. I have, however, 

 made an attempt to make a key to the species. 



