/ 



344 WILSON EXPEDITION TO CHINA 



nom sericea Hemsley in Jour. Linn, Soc. XXIII. 254 (non Lindley) (1887), 

 quoad specimen Andersonii. 

 Yunnan : " CoUines arides autour de Tong-chouan," alt. 2600 m., April 1911, 



E. E. Maire (type). 



This is probably nothing more than a very hairy and small leaved variety of 

 Rosa omeiensis Rolfe, but in the absence of fruiting specimens and first-hand 

 knowledge we hesitate to reduce it to varietal rank. The specimens collected m 

 Manipur by Watt and referred to in the Gard, Chron. ser. 3, XXXVlll. 261 (1905) 

 and in the Boi. Mag. CXXXIV. sub. t. 8218 (1908) in all probability belong here. 

 In the Gray Herbarium are two specimens from the Herb. Griffith (Nos. 2138, 

 2139) collected on the eastern Himalaya which apparently belong here also. 

 It is unfortunate that none of the specimens are in fruit. 



Subfam. PRUNOIDEAE. 



Determined by Alfred Rehder. 



The genera Maddenia and Prunus having been dealt with by E. Koehne on pp. 

 5G-75 and 196-282 of volume I., it remains only to add here three Chinese genera 

 not collected during the Arnold Arboretum Expeditions. 



PYGEUM Gartn. 



Pygeum Heniyi Dunn in Jour. Linn. Soc. XXXV. 493 (1903). — Koehne in BoL 

 Jahrb. LI. 185 (1913). , 



Yunnan: Szemao, alt. 1300-1500 m., A. Henry (Nos. 12313, 12313% 12313 , 



12708). 



Pygeum latifolium Miquel is recorded by Hemsley (in Jour. Linn. Soc. XXIII- 

 223) from Hongkong and by Uveill^ {Fl. Kouy-Tcheou, 352) from Kwei-chou, but 

 Koehne in his synopsis of the genus (BoL Jahrb. LI. 195) cites only Javanese speci- 

 mens under P. latifolium and enumerates P. Henryi as the only Chinese species. 



DICHOTOMANTHES Kurz. 



Dichotomanthes tristaniaecarpa Kurz in Jour. Boi. XL 195, t. 133, fig. 2 

 (1873). — Hemsley in Jour. Linn. Soc. XXIII. 307 (1887); in Hooker's Icon. 

 XXVll. t. 2653 (1900). 



Yunnan: Mengtsze, alt. 1500-1700 m., A. Henry (Nos. 9367% 10255, 10255*). 



Dichotomanthes tristaniaecarpa, var. glabrata Rehder, n. var. 



A typo recedit foliis initio subtus fioccoso-tomentosis mox glabrescentibus, ma- 

 turitate costa media excepta glabria interdum basi rotundatis apice obtusiusculis 

 mucronulatis. 



Yunnan: Szemao, alt. 1300-1500 m., A. Henry (Nos. 11959% type, tree 7 m. 

 tall, fruit red; 11959 . shrub 1 m. tall, wlute flowers). 



Except in the glabrescent leaves and a slight difference in their shape this variety 

 agrees in all its other characters with the type. 



PRINSEPIA Royle. 



Sect. 1. EUPRINSEPIA Rehder, n. sect. 



Prinsepia Royle, ///. 206, t. 38, f. 1 (1839). 



Flores racemosi; stamina numcrosa, pluriserialia. Frutex ramis viridibus spini» 

 vaUdis saepe foliosis munitis. 



