Puate LXXVIII. 
POTENTILLA susacautis, Linn., var. albicans, Moggridge. 
Natural Order Rosace#. 
Gen. Cuar.—See description of Plate X. Part I. 
Spec. Cuar.—F lowers yellow, 2-3 in short panicles furnished with 
amplexicaul bracts. Calyx segments ovato-lanceolate, broader than the 
linear-oblong, subobtuse outer segments. Petals entire or sub-emarginate, 
obovate (obcordate and deeply emarginate in specimen in Linneus’ Her- 
barium), slightly longer than the sepals. Carpels deeply reticulate. 
Leaves trifoliolate, grey or felted on either side with mixed stellate and 
simple hairs; leaflets more or less broadly obovate, or in the outermost and 
oldest leaves cuneato-obovate, toothed in upper half only, teeth short, the 
terminal tooth often shorter than the rest; petiole short; stipules linear 
lanceolate, usually bi- or trifid, dilated and sheathing at the base. 
Potentilla subacaulis, var. albicans, Moggridge; P. subacaulis, Linn. 
(part.) Sp. Plant. p. 715; Gren. et Godr. Fl. de Fr. i. 527; Woods» 
Tour. Fl. p. 118; P. cinerea y. velutina, Lehm. Revisio Potentillarum in 
Nov. Act. Acad. Cas. Leopold. Car. xxiii., suppl. (1856) p. 175-4. 
Hasitat.—Eastern end of Mont Cheiron, north of Grasse; collected by 
my father, in the early part of May, 1870. 
Remarks.—Potentilla subacaulis, Linn.,is one of ‘those species, the nomen- 
clature of which has a complicated history, all the more involved because 
it appears that the characters which are assigned to it, though distinctive 
in the majority of specimens, fail in certain portions of its range. P. 
cinerea, Chaix, is said to be distinguished from P. subacaulis, L., by its 
laxer habit, longer flowering stems, usually 5-foliolate and less densely 
felted leaves, the terminal tooth of which is smaller than the lateral ones 
and the narrower stipules of the leaves of the rosette. However, on examin- 
ing a really large series of specimens at Geneva, in London, and at Kew, 
I found that no one of these characters is absolute. Lehmann, in his 
Revisio Potentillarum, quoted above, limits his species P. subacaulis to the 
form found in Siberia, but it is certain that Linneus included under this 
name the south European plant and probably also the P. cinerea of Chaix. 
There are two specimens of P. subacaulis in Linneus’ own Herbarium, 
differing in habit, and possibly from distinct stations (no habitats are 
given, and Linneus has only written ‘22 subacaulis” underneath) ; the 
one compact and with foliage resembling the plant I figure, but having a 
flowering stem more than twice as Jong as the leaves and larger emargi- 
nate petals, while the other has a much looser habit of growth and elongated 
