The Botany of Iceland - 01.12.1942, Qupperneq 100

98
JOHS. GRONTVED
Lycoþodium dubium.
This species is added to Zoega’s list, 1772, p. 11, together with a description.
Lindsay (1861, p. 33) records it as: L. dubium König, but it is not in König’s
and Miiller’s list. It has not been identified by the succeeding authors, and will most
probably have been a state or variety of one of the other Icelandic species; cfr,
Babington, 1871, p. 347.
12. Lycopodium Selago L. Sp. pl. ed. I (1753) p. 1102.
K. & M., 1770, p. 211—Babington, 1871, p. 347.—Gronlund, Isl. Fl., 1881,
p. 135.—Stefánsson, Fl. Isl. ed. 1, 1901, p. 12.—Ibid. ed. 2, 1924, p. 12.—
C.H.O., Fl. arct., 1902, p. 12.—O. & Gr., 1934, p. 1.
Fl. Dan. tab. 104.
Icelandic: Skollafingur. Danish: Otteradet Ulvefod. English: Fir Club-moss.
Fully developed and ripe sporangia are not often found in this species in Ice-
land ; in most cases the sporangia are obsolete, containing undeveloped spores. The
propagation very likely takes place in most cases by means of the geminae of bulbilli
which are usually developed in large numbers in the axils of the upper leaves.
The f. aþþressum Desv. (var. alþestre Berl.), with shorter and more appressed
leaves, is rather frequent in Iceland.
Common in all parts, both in the lowland and in the central highland.
Life-form: Ch.
In lava-fields; on grassy and mossy ground ; in urðs, heaths, in rock-crevices.
Max. height: 18 cm ; average : 10 cm.
Geogr. area: Greenl.: Circumgreenlandic.—Eur.: Fær.; E.S.I.; Scandinavia, Novaya
Zemlya, Spitsbergen, southward to the Pyrenees; Caucasus.—Asia: From the Arctic
Sea southward to Turkestan and Asia Minor.
S elaginellaceae.
13. Selaginella Selaginoides (L.) Link, Fil. Spec. Hort. Berol. (1841)
p. 158.
Lycoþodium Selaginoides K. & M., 1770, p. 211.—Selaginella sþinulosa A.Br.,
Babington, 1871, p. 347.—Gronlund, Isl. Fl., 1881, p. 136.—S. selaginoides (L.)
Lk., Stefánsson, Fl. ísl. ed. 1, 1901, p. 13.—Ibid. ed. 2, 1924, p. 14.—C.H.O.,
Fl. arct., 1902, p. 13.—O. & Gr., 1934, p. 2.
Flora Dan. tab. 70.
Icelandic: Mosajafni. Danish: Dværg-Ulvefod. English: Low Selaginella.
Common in all parts of the lowland, and also recorded from many places in the
central highland.
Always copiously sporangiferous.
Life-form: Ch.
In grassy places, on mossy ground, in low copses, on heaths and moors, on slopes;
on dry and meagre soil.
Max. height: 8 cm; average: 4 cm.
Geogr. area : Northern N. America.—Greenl.: W. 60°—65°8'. E. 60°—63°40\—
Eur.: Fær.; E.S.I.; northern Eur., southward to the Pyrenees ; Caucasus.—Northern
Asia, southward to Honshu. Baikal.