Tas. 8180. 
POTENTILLA concotor. 
Pe 
China. 
RosacgEak. Tribe PoTENTILLEAE. 
PorenTILLA, Linn.; Benth. et Hook. f. Gen. Plant. vol. iii. p. 620; Ch. Lehm. 
Revis, Potentill. p. 1. 
Potentilla concolor, Rolfe; a P. Griffithii, Hook. f., foliolis duplo majoribus 
concoloribus, floribus duplo majoribus differt. 
Hlerlba perennis, circa 3 em. alta. Caules suberecti, validi, pubescentes. Folia 
radicalia non vidi; caulina petiolata vel superiora subsessilia, pinnata 
vel superiora trifoliolata; rhachis pubescens; foliola obovato-elliptica, 
inciso-dentata, basi attenuata, 2-5 cm. longa, concoloria, pubescentia ; 
stipulae ovato-oblongae, obtusae vel subacutae, integrae, tenuiter pubes- 
centes, 1-3 cm. longae. Cymae laxae, pauciflorae. lores speciosi, 4 cm. 
lati, lutei. Ca/yx 2-5 em. latus, 5-bracteolatus; lobi ovato-oblongi, acuti, 
tenuiter pubescentes. Bractevlae calycis lobis similes. Petala latissime 
obcordata, apice biloba, 1-5-2 cm. lata. Antherae purpureo-marginatae. 
Achaenia et styli glabri—Potentilla Griffithii, var. concolor, Franch. Pl. 
Delay. p. 213. 
The handsome Potentilla here figured is a native of the 
province of Yunnan, in south-western China, where it was 
discovered by the Abbé Delavay about twenty years ago, 
growing in caleareous soil on Mt. Yen-tze-hay, at about 
10,500 ft. elevation. It was described as a variety of the 
Himalayan Potentilla Griffithii, Hook. f., by Franchet, who, 
however, pointed out that it has much larger concolorous 
leaflets, not white-tomentose beneath as in the typical form ; 
also larger foliaczous stipules and much larger golden 
yellow flowers. It has now appeared in cultivation, having 
been submitted for determination in May last by Messrs. 
Bees, Ness, Neston, Cheshire, with the information that it 
had been received from Yunnan. Now that living speci- 
mens are available it is evident that the plant referred to 
cannot be P. Griffithit, Hook. f.; though a member of the 
same group, it 1s quite unlike the Himalayan plant in 
general aspect, and is clearly a distinct species, for which 
the varietal name, concolor, may be retained as the specific 
appellation. P. Grifithii has leaflets of about half the 
size of the present species, and these are invariably densely 
white-tomentose beneath, and the tomentose character also 
Fresrvary, 1928, 
