The Botany of Iceland - 01.12.1942, Qupperneq 339

THE PTERIDOPHYTA AND SPERMATOPHYTA OF ICELAND
337
The hybrid E. curta X E. frigida (?) is found in one locality:
Patreksfjörður, N.W. (Knud Jessen, 1908). Specimens in flower, 7—9 cm high,
are kept in H.H.
351. Euphrasia Davidssonii Pugsley, in Journal of Botany, vol. 71,
1933, p. 308.
O. & Gr., 1934, p. 122.
Icon.: fig. 152.
Found only in one locality, at Reykjalaug in Fnjóskadalur, N. (Ó.D., 1900),
cp. Pugsley, loc. cit.
The type specimens (kept in H.H.) are from 9—12 cm high.
Life-form : Th.
Only found in Iceland.
352. Euphrasia frigida Pugsl. in Journ. of Linn. Soc., Bot. vol. 48,
1930, p. 490. (Syn. E. latifolia Pursh ex Wettstein and auctt.
mult., non Linn. nec. auctt. angl.).
E. officinalis, K. & M., 1770, p. 208.—Babington, 1871, p. 320.—E. officinalis
Linn., var. latifolia (Pursh), syn. E. officinalis var. arctica Lge., Gronlund,
Isl. Fl., 1881, p. 66.—E. latif. Pursh, H. Jónsson, 1899, p. 200.—Stefánsson,
Fl. ísl., ed. 1, 1901, p. 168.—Ibid., ed. 2, 1924, p. 190.—E. frigida Pugsley,
1933, p. 306,—O. & Gr., 1934, p. 122.—Anderson & Falk, 1935, p. 410.
Icon.: Wettstein, Monogr. d. Gatt. Euphrasia, 1896, tab. XI, fig. 11 (E. lati-
folia Pursh.).
Recorded in the older lists under the name E. officinalis L., E. parviflora Fr.,
and some other names, cp. Babington, loc. cit.
Icelandic : Augnfró. Danish : Læge-0jentrost. English : Eyebright.
It is the commonest species of this genus, and met with throughout Iceland, at
least in the lowland. It also occurs in the central highland. Thus it is found at
Hveravellir (Romose, 1935), Kjalhraun (Þorkelsson, 1906), Eyjabakkar (J.Gr.,
1935).
Highly varying. According to Pugsley, loc. cit., the following varieties occur in
Iceland :
var. subcurta (Jorgensen) Pugsley, with narrow and more hirsute leaves (Pugsley,
1933, p. 306). Illustr. in Jorgensen, Euphr. Norweg., 1919, tab. VIII, figg. k—o.
var. laxa Pugsl., plant laxer, with more equal internodes and leaves (Pugsley,
1933, p. 307). Illustr. in Pugsley, 1930, tab. 27, figg. a—e.
var. attenuata Pugsl., leaves more finely cut, and the capsules narrowly oblong
and subtruncate (cp. Pugsley, 1933, p. 307).
var. þusilla Pugsl., plant dwarfish, with simple stem and few leaves and flowers
(cp. Pugsley, 1933, p. 307). Illustr. in Wettstein, loc. cit., tab. XI, fig. 12.
Life-form : Th.
In grassy fields, moors, heaths, near hot springs.
Flor. VII—VIII; fr. mat. VIII.
Max. height: 17 cm ; average: 7 cm.
Geogr. area: Am. : Labrador to Newfoundland.—Greenl. : W. 60°—71 °25'. E.
60°—74°30'.—Eur.: Fær.; E.S.; Scandinavia, Finland, northern Russia.—Asia :
Siberia, eastward to the river Tunguska.
The Botany of Iceland. Vol. IV. Part I.
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