The Botany of Iceland - 01.12.1942, Blaðsíða 150

148
JOHS. GRONTVED
Flor. VIII; fr. mat. VIII.
Max. height: 20 cm ; average : 13 cm.
Geogr. area: Eur. : S.; Sweden, Norway.
78. Poa glauca M. Vahl, Fl. Dan., fasc. 17 (1790) p. 3.
Poa glauca and P. caesia, Hooker in Mackenzie, 1811, p. 418.—P. nemoralis S.
caesia, Vahl, 1840, p. 375.—Babington, 1871, p. 343.—Poa caesia Sm., Gron-
lund, Isl. Fl., 1881, p. 131.—P. glauca Vahl, Stefánsson, Fl. Isl., ed. 1, 1901,
p. 53.—Ibid., ed. 2, 1924, p. 61,—c'h.O., Fl. arct., 1902, p. 124,—O. & Gr.,
1934, p. 25.
Flora Dan. tab. 964.
Icelandic: Blásveifgras. Danish: Blaa Rapgræs.
Very variable according to the nature of the localities, and in many localities
in Iceland P. glauca is very difficult to discern from P. nemoralis, especially when
the former is growing in shady places, where it becomes more slender and taller
of growth.
Very common in all parts, in the lowland as well as the central highland where
it ascends to about 1000 m s. m.
Life-form: H.
In fell-field, on rocks and rocky slopes, on gravelly soil, in new morainic soil, etc.
Flor. VI—VII; fr. mat. VII—VIII.
Max. height: 55 cm; average : 25 cm.
Geogr. area: N. Am.: Labrador to Maine, White Mount. of New Hampshire and
Minnesota.—Greenl.: W. 60°—74° 18'. E. 60°—79°30'.—Eur.: Fær.; E.S. ; northern
Scandinavia, Finland, central European mts.—Asia : Mouths of Yenisei and Kolyma,
Altai, Chukchee Land.
79. Poa nemoralis Linn., Sp. pl. ed. I (1753) p. 69.
P. angustifolia, K. & M., 1770, p. 204.—P. nemoralis L., Babington, 1871,
p. 343.—Gronlund, Isl. Fl., 1881, p. 131.—Stefánsson, Fl. ísl., ed. 1, 1901,
p. 53.—Ibid., ed. 2, 1924, p. 60,—C.H.O., Fl. arct., 1902, p. 125,—O. & Gr.,
1934, p. 25.
Flora Dan. tab. 749.
Icelandic: Kjarrsveifgras (Runnasveifgras). Danish : Lund Rapgræs. English: Wood
Meadow-grass.
In Iceland Poa nemoralis is very variable according to the localities, and as already
mentioned under Poa glauca, there often occur forms in Iceland which seem
transitional between the two species. Specimens of P. nemoralis from woods and
copses, or more shady places are generally of a more typical habitus.
Common throughout most parts of the lowland, but rarely found in the central
parts: Hvítárvatn, D. 11 (J.Gr., 1934).
Life-form: H.
In scrub and woods, on grassy slopes, in gullies, etc.
Flor. VII—VIII; fr. mat. VIII—IX.
Max. height: 74 cm; average: 39 cm.
Geogr. area : Northern N. Am. (naturalized from Europe).—Greenl.: W. 60°—c. 62°.
E. 60°—66°18'. (Possibly only a variety of P. glauca).—Eur.: Fær.; E.S.I. ;