The Botany of Iceland - 01.12.1942, Blaðsíða 366

364
JOHS. GRONTVED
Life-forra : H.
Habitats as for E. uniflorus, see this.
Up to 18 cm high.
Geogr. area : Arctic Americ. Archipelago; Quebec, Baffin Island, Chesterfield Inlet.
—Greenl. : W. from 66°55'—77°40'. E. from 63°7'—74°46'.—Eur. : Scandinavia,
Novaya Zemlya, Waigatch.—Asia : Siberia.
388. Erigeron unalaschkensis (DC.) Vierhapper in Monogr. d. alpinen
Erigeron-Arten Europas und Vorasiens. Beih. z. Bot. Centralbl.
Bd. 19, 2. Abt. (1906) p. 492.
E. uniflorus L. var. unalaschkensis (DC.), O. & Gr., 1934, p. 138.
Icon. Vierhapper, Monogr. Taf. V, fig. 16.
This species is now known from various localities in Eyjafjörður (Sölvadalsbotn,
Brattifjallagarður, Reistarárskarð, Hallgilsstaðaskarð and Þrastarhólsskarð and from
Syðri Pollar in Central Iceland. See
fig. 171. E. unalaschkensis is distin-
guished from E. uniflorus by its al-
most black-haired dark purple phyl-
laries; the ray-flowers are white, later
on bluish-violet; pappus yellowish-
grey, brittle; cp. Vierhapper, loc. cit.,
and B. Lynge in Vascular Plants froi>
Novaya Zemlya, 1923, p. 82—83.
Fig. 171. Erigeron unalaschkensis (DC)
Vierhapper.—Rings with dot: E. erioce-
phalus J. Vahl.
Life-form : H.
Habitats as for E. uniflorus, see this.
Flor. VII; fr. mat. (?).
Max. height: 6 cm; average: 4 cm.
Geogr. area: Arctic N. Am., south-
ward to Labrador, Montana and
Unalaschka.—Greenl.: W. 62°40';
64°73°. E. 60°—76°46'.—Eur.: Spits-
bergen, Waigatch, northern Scandi-
navia.—Asia : TaimyrRiver, Chukchee
Penins., Kamchatka.
389. Erigeron uniflorus (Linn.) emend. Vierhapper, Mongr. d. alpin.
Erig. Arten (1906) p. 495.
Thienemann & Giinther, 1827, p. 287.—Bennet, 1886, p. 69.—Stefánsson,
Fl. ís 1., ed. 1, 1901, p. 198.—Ibid., ed. 2, 1924, p. 224,—O. & Gr., 1934,
p. 139.
Flora Dan. tab. 1397.
Icelandic: Fjallajakobsfífill, “Fjallakobbi”.
This species was first recorded by T. & G., loc. cit., from Eiðar, E., and (with
some doubt) by Bennet from Herðubreiðarlindir in D. 14 (T.T., 1884), but it had
fceen previously taken by Lundström at Mývatn in 1870.
It seems to be fairly common in N., while it is also recorded as found in several