The Botany of Iceland - 01.12.1942, Síða 45
THE TARAXACUM-FLORA OF ICELAND
271
Squamae exteriores latae, ovatae—ovato-lanceolatae, adpressae, subtus obscure
olivaceo-virides, late albido-marginatae, supra laete virides.
Calathium c. 40 mm latum, planum, densum, obscure luteum, ligulae marginales
stria cano-violacea notatae.
Antherae polline carentes.
Stigmata lutea—leviter virescentia.
Achenium stramineum (c. 162), 3.4—3.6 mm longum, c. 1.2 mm latum, superne
crebre et minute spinulosum—squamulosum, ceterum + laeve, in pyramidem late
conicam, 0.4—0.5 mm longam sensim abiens.
T. devexum has appressed, broadly ovate, dark-green, white-margined outer
bracts, dark-yellow, female heads and dark-green leaves. It appears to be closely
related to T. perdevexum, T. declive and similar species. The latter, however, has
strongly spinose fruits and the former is slender with narrower leaves and narrower
outer bracts.
It is spontaneous.
Habitat: Meadows, birch-copses and ditches.
Localities: Vestmannaeyjar, 5.VII.1937, Bleiksárgljúfur !, 4.VII.1937. S.—
Hveragerði !, 2.VII.1937, Reykjavík, 6.VII.1935, 29.VI.1937, Laugarna at Reykja-
vík !, l.VII.1937, Reykjavík towards Fossvogur, l.VII.1936 (Omang), Álptanes near
Bessastaðir, 9.VII.1936 (Omang), Skerjafjörður near Skildinganes, 7.VII.1936
(Omang), Árbær, 2.VII.1936 (Omang), near Elliðaá, 2.VII.1936 (Omang), Hafnar-
fjörður !, 8.VII.1935, l.VII.1937, plentiful, Reykir at Álafoss !, 29.VI.1937, Þing-
vellir, 7.VII.1935, fr., phot. 30.VI.1937. S.W.—Stykkishólmur !, 10.VII.1935. W.
—Blönduós !, 15.VII.1937. N.
Geogr. Distr.: Only found in Iceland.