The Botany of Iceland - 01.12.1942, Page 277

THE PTERIDOPHYTA AND SPERMATOPHYTÁ OF ICELAND
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266. Potentilla Egedii Wormskj., Flora Dan. IX, fasc. 27 (1818) p. 5.
(Syn. P. Anserina var. groenlandica Tratt., Ros. Mon. IV (1824)
p. 13. P. Anserina var. Egedii Torr et Gr., Fl. N. Am. I (1840)
p. 444).
Flora Dan. tab. 1578.
In Iceland Potentilla Egedii is represented by two distinct varieties, viz. var.
eu-Egedii and var. groenlandica (Tratt.) :
Var. eu-Egedii: Leaves green, like the calyx glabrous or nearly so. Leaflets few,
often with only 3—4 broad and obtuse (rounded-triangular) teeth on either side.
Small and slender of stature.
Var. groenlandica (Tratt.) leaves white felty, not glossy, on the lower surface. Leaf-
lets with several teeth on either side; the teeth narrow and long, curved towards
the tip, and with a hyaline mucro. Calyx with scattered hairs.
Occurring in some places in N. Iceland ; in the other parts found only in one
place, Hvítárvellir in Borgarfjörður (A.F., 1886). See fig. 112.
Life-form: H.
In strand meadows and on sea beaches.
Flor. VI—VIII; fr. mat. VII—VIII.
Max. height: (flowering stalks) 6 cm ; average: 4 cm.
Geogr. area : N. Am. : Arctic parts (? P. þacifica Howell).—Greenl.: W. 60°—
70°40'. E. 60°—66°8'.—Eur.: Arctic regions, Caucasus.—Asia : Okhotsk, Chukchee
Penins., Anadir, Ussur.
Potentilla argentea Linn.
Preyer & Zirkel, 1861, p. 368.—Babington, 1871, p. 303.
Recorded by P. & Z., loc. cit., but no authority is quoted. Babington, 1871,
loc. cit., has entered it in his list, following P. & Z. It should be excluded from the
Icel. Flora.
18*