354. 



LI. ROSACEA. (J. D. Hooker.) 



[^Potentilla. 



gins recurved, flowers yellow |-§ in. diam. corvinlx)se, achenes numerous minute, 

 • ' ' Lehm. Mevis. Potmtill 34. ' P. breviscissa; Bet'toL Misc. Bot 



style terminal, 

 xxiv. 17, t. 5. 



KuMAoN, alt. 



ID 



Kashmir and Western Tibet, alt. 10-16,000 ft.; Niti Pass, 

 16,300 ft., Str. ^ Wint,—DiSTm^, Affghanistan to the Caucasus. Northern and Cen- 

 tral Europe and Asia from Lapland and the Pyrenees ; China ; temperate and Arctic 



N. America. ^ i, rt 



As variable in stature as P. sericea, and in other respects also. Bootstock snort, 

 erect, -w'ith many crowns of leaves and stout or slender, suberect or prostrate or as- 

 cending stems. Leaves ^2 in. diam., normally with 5 subdigitate lobes, but often witn 

 lobes more pinnately dispersed on the slender petiole which is sometimes 4 in. ^*^' 

 divisions of pinnules ^\ in. broad. Flowers \-\ in. diam., in close or open corymbose 

 cymes, or few, or solitary in reduced forms, subsessile or on long slenner peaice . 

 Calyx silky ; lobes ovate, acute ; bracteoles linear-oblong, obtuse. Petals orbicu ar- 

 obovate, retuse. Achmts glabrous, exactly like those of P. smcea ; receptacle nairy. 

 — A considerable number of species in different sections of Lehman's '* Revision 

 referable to this species. P. altaica, Bunge is a state with leaflets reduced to tnxee^ 

 P. vertwillaris, Steph., referred here by Ledebour, is according to our specimens 

 partly P. multifida and partly sericea. i la- 



Var. glahrata ; dwarf, rootstock stout, stem prostrate, leaves dense nearly g 

 brous, flowers small. • f tt 



Var. minor, Ledeb. Fl Ross, ii. 42 ; very slender, leaflets pinnate cut into verj 

 slender lobes. P. tenella, Turcz. West Tibet, Falconer. Affghanistan, Griffith^ 



Var. Saurtdersiana ; very small, leaves palmately 3-5-foliolate, leaflets 4 

 deeply incised tomentose or silky beneath. P. Saundersiana, Boi/le HL ?"*','•' 

 f. 1 ; Lehm. Bevis. Potentill 113. Western Tibet, alt. 15-17,000 ft. Also in bioer^^ 

 and Arctic latitudes. Very small 3-foliolate specimens are perhaps ^i^^istinguisiia ^ 

 from P. nivea, L., and var. hololeuca of P. sericea maybe referable here. ^ , 

 forms of these three species are hardly distinguishable in a dry state. , -,. 



25. P. sericea, Linn. ; Boiss. Fl. Orient, ii. 709 ; white, densely siMy 

 tomentose, stems many, leaves oblong pinnate, leaflets 5-11 silky ^^ "^ i^^d 

 faces, cut nearly to the base into linear subacute ascending lobes with ^5"f^^g 

 margins, flowers yellow ^-f in. diam. corjmbose, petals _ orbicular-obo^^^i 

 achenes many smooth, carpels glabrous, style terminal. ' *" - 



33. P. cinerascens, Ba-toL Piant. Nuav. Asiat. 7, t. 63. 

 Ledeb. Fl. Boss. ii. 42. 



Western TmET, and Tibetan region of the Weslem Alpine Himalaya, ro^^ 

 Kashmir, alt. 9-17.000 ft. to Kumaon.— Distrib. Affghanistan to the Caucasus 

 Armenia. Soongaria, N. China, Temperate and Asiatic N. America. . ^j, 



A very variable plant, diminishing in size with the increasing ®^^^^ J?^° ^^./^i 

 18 in. to 3 in. ; covered more or less densely with soft shining silky hairs. ^^-^jjorc 

 very stout, perpendicular, with many heads. Leaves crowded, 1-6 in. long, P^^i^-^gy to 

 than 1 in. broad; leaflets oblong, ail cut nearly to the midrib, rarely only na ^^ 

 it, the terminal leaflets pedately disposed, the lateral opposite and 'i^*^^^.^ ^^ jarg^f 

 trin^ stems ascending, densely tomentose, corynibosely many-flowered in ^^^^^^ 

 specimens, few or 1-flowered in the smaller. Calyx-lobes triangular-ovate ori^ pocb«' 

 acute; bracteoles narrowly oblong, obtuse. Achenes quite smooth.— I can fin ^^ ^^ 

 racter whereby to separate P. soongarica from the common Tibetan ^^^^ ^jjicb 

 cea and it is difficult to retain hololeuca and polvschista as distinct forms, 

 may be added certain forms of P. pinsyhanica, L. flinaller-" 



Var. polysrhista, Lehm. ; dwarf, densely tufted, leaflets 3-5 short, flowers 

 alt. 15-17,0(10 ft.— P. polyschista, Boiss. Flor. Orient, ii. 710. ^ ^ pin- 



Var. hololetica, Boiss.; R. Orient, li. 710 (sp.); dwarf, leaflets ^'^'^^ g^* 

 natifid to the middle, most densely white tomentose beneath, ^^^^^^t -ftie Til>*^ 

 Lehm. Bevis. Pot. 69, t. 27. Perhaps referable to K mult\fida—Pvig^^ in ^^^^ 



Lehm. Bevis. Potenf^^ 

 P. soongarica, Mn^^ » 



i 



^ . 



.^^ 



-I ^ 





1 . J 



