extends to the sepals and bracteoles, while the flowers 
generally are not half as large. P. concolor is probably the 
finest yellow-flowered species known, and promises to be a 
very showy garden plant. It will probably prove as hardy 
as its Himalayan congeners. 
Descriprion.—A_ perennial herb over a_ foot high. 
Branches suberect, stoutish, pubescent. Radical leaves not 
seen; cauline leaves petiolate or the upper subsessile, 
pinnate or the upper trifoliolate; rachis pubescent ; leaflets 
obovate-elliptical, deeply toothed, attenuate at the base, 
1-2 in. long, concolorous, pubescent ; stipules ovate-oblong, 
obtuse or subacute, entire, slightly pubescent, $-1 in. long. 
Cymes lax, few-flowered. lowers very large, over 1} in. 
across. Ca/yx spreading, | in. broad, with five bracteoles 
alternating with the sepals and similar to them in shape; 
lobes ovate-oblong, acute, slightly pubescent. Petals 
broadly obcordate, bilobed at the apex, }—} in. broad, deep 
yellow, with an orange-coloured blotch at the base. Anthers 
elliptic-oblong, margined with purple. Achenes and style 
glabrous.—R. A. Ronre. 
CuLtivation.—Only a few of the numerous species of 
Potentilla have won recognition as garden plants, and the 
best of these is P. Russelliana (B. M. t. 3470) which is a 
hybrid, said to have been raised at least 75 years ago by 
a Mr. Russell of Battersea, from P. atrosanguinea and 
P. nepalensis. The plant here figured is, in habit and 
general characters, very similar to P. Russelliana; but 
whilst the latter has rich blood-red flowers, those of the 
present plant are bright yellow. These are produced in 
May, and the plant is evidently quite hardy, thriving under 
the treatment that answers for the garden representatives 
of Geum and Geranium.—W. Warson. 
Fig. 1, calyx and bracteoles; 2 and 3, anthers; 4, a young carpel :—all 
enlarged. ; 
