90 MEMOIRS FROM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 
71. Potentilla Vabliana Lehm. 
Potentilla Vahliana Lehm. Mon. Pot. 29 and 172. 1820. 
Hornem. Nomencl. Fl. Dan. Emend. 66 and 118; Sprengel, Syst. Veg. 2: 941; 
Don, Gard. Dict. 2: 551; Walp. Ann. 2: 507; Lehm. Rev. Pot. 170. 
Eat. Man. Ed. 7: 456: Eat. & Wr. N. Am. Bot. 372; Rydb. Bull. Torr. Bot. Club, 
23: 303. 
Lehm. in Hook. Fl. Bor. Am. 1: 194; Seemann, Bot. Herald, 51; Lange, Consp. 
Fl. Groenl. 8 and 235: Rosenvinge, ibid. 655; Nathorst. Oefv. Kong. Vet. Ak. Forh. 23— 
34; Holm, Proc. Acad. Phil. 1895: 544. 
Potentilla hirsuta Hornem. Dansk. Oecom. P]. Ed. 2: 500.* 
Potentilla Jamesoniana Greville, Mem. Wern. Soc. 3: 417. 1821. 
DC. Prod. 2: 586; Sprengel, Syst. Veg. 2: 542. 
Potentilla vivea Vahliana Seemann, Bot. Herald, 29; Macoun, Cat. Can. Pl. 139eam 
part. 
Potentilla nivea hirsuta Durand, Proc. Acad. Phil. 1863: 94. 1863. 
Potentilla pulchella Mechan, Proc. Acad. Phil. 1893: 210. 1893. 
Potentilla nivea B RB. Br. in App. Parry’s 1st Voy. 277, 1824 (in part); Hook. Parry's 
2d Voy. App. 15 (in part). 
Potentilla nivea 7 Torr. & Gray, Fl. N. Am. 1: 441, in part. 
Iuusrrations: Fl. Dan. 8: pl. 1390; Grev. Mem. Wern. Soc. 3: pl. 20. PLATE 
35, f. 8; dissection of flower, f. 9 ; pistil, f. 10; stamen, f. 11; fruiting hypanthium and 
calyx, f. 12. 
Densely cespitose, the stout woody much branched, caudex covered with the brown 
scarious stipules and remains of old leaves. Flowering stems nearly leafless, 1—2- 
flowered, about 5 em. high, densely covered with yellowish hairs. Leaves crowded, 
short-petioled, ternate, silky above, slightly tomentose and rather densely yellowish-vil- 
lous beneath; leaflets generally less than 1 cm. long, cuneate and coarsely dentate at 
the apex. Flowers about 15-20 mm. in diameter. Hypanthium yellowish silky-villous, 
about 1 em. in fruit; bractlets and sepals broadly ovate or elliptic, often obtuse, sub- 
equal. Petals nearly orange, broadly obcordate, overlapping aach other and often 
broader than long, nearly twice as long as the sepals. 
This is very low and matted, the large flowers a little exceeding the leaves. ie 
petals are very broadly obreniform, 7. ¢., broader than long, and therefore overlap each 
other; the bractlets are broadly oval, obtuse and about equal the ovate sepals. The 
