The Botany of Iceland - 01.12.1942, Side 36

262
M. P. CHRISTIANSEN
A bud was taken in; it expanded; there was no pollen, but the fruit developed.
The species is apogamous.
It is no doubt spontaneous.
Habitat: Heaths, meadows, ditches and birch-copses.
Localities: Seljeland, 31.VII.1924 (A. Skjot-Pedersen), Stóriendi in Þórsmörk,
8.VII.1937, fr., phot., Múlakot !, 3.VII.1937, Stórólfshvoll !, 9.VII.1937. S.—
Þrastarlundur !, 12.VII.1937, Hveragerði !, 2.VII.1937, Þingvellir, 7.VII.1935, 30.
VI.1937, Hafnarfjörður !, l.VII.1937, Stekkshraun near Hafnarfjörður, 18.VI.1896
(Ostenfeld), Laugarna at Reykjavík !, l.VII.1937, Reykir at Álafoss !, 29.VI.1937.
S.W.—Isafjörður !, l.VIII.1937, Flateyri ! in Önundarfjörður, l.VIII.1937. N.W.—
Blönduós !, 14.VII.1937. N.—Hallormsstaður !, 22.VII.1935, Brekka !, 20.VII.
1935. E.
Geogr. Distr.: Only found in Iceland.
8. Taraxacum stidophoreum M.P.Chr. n. sp.
Spec. orig.: Iceland, Reykir at Álafoss, 7.VIII.1935, leg. M. P. Christiansen.
Plate I, fig. 8. Plate XXV, fig. 161.
Planta 20—35 cm alta, sat robusta. Folia glauco-viridia, superne valde atro-
purpureo-maculata, parce araneosa, sat anguste lanceolata—lanceolata, petiolis pal-
lidis, nervo mediano + rubescenti, lobis distantibus, basin versus latissimis, deltoideis
vel in apicem longum, angustum attenuatis, patentibus—leviter retroversis, integris—
uni-dentatis, lobo terminali parvo, sat cordato—triangulari-hastato, acuto—acuminato,
integro, interlobiis latis, integris.
Involucrum sat obscure olivaceo-viride.
Squamae exteriores 2—3 X 8—11 mm, erecto-patentes—arcuatae, subtus laete—
obscure olivaceo-virides, + late purpureo-marginatae, supra laete virides, +
rubescentes.
Calathium c. 40 mm latum, planum, densum—sat densum, luteum. Ligulae
interiores canaliculatae, marginales planae, 3.5 X 15 mm, subtus stria obscure cano-
violacea—rubro-violacea notatae.
Antherae polline carentes.
Stylus et stigmata luteo-virescentia.
Achenium sat immaturum luteo-stramineum (157), c. 3.6 mm longum, c. 1.0—1.2
mm latum, superne crebre, breviter spinulosum, ceterum laeve—parce tuberculatum,
pyramide sat abrupte conica, 0.4—0.6 mm longa, inferne + spinulosa. Rostrum
10—11 mm longum.
T. stictoþhoreum is distinguished by its regular, bluish-green, very purple-spotted
leaves, anthers without pollen, and achenes finely spinous above with a somewhat
conic-toothed pyramid. In the form of the leaves the species resembles T. espinulosum,
but the achenes of the latter are smooth.
Habitat: Heaths, lava-fields and ditches.
Localities: Reykir at Álafoss, 7.VIII,1935, fr., Reykjavík, 7.VIII.1935, Laugarna
at Reykjavík, 7.VIII.1935, Hafnarfjörður, 8.VIII.1935, phot., Cult. in hort. bot.
Haun. 428/1917. Sem. ex S.W. Iceland, Teigur, 7.VIII.1915 (Helgi Jónsson).
S.W.—Hallormsstaður, 24.VII.1935. E.
Geogr. Distr.: Only found in Iceland.
9. Taraxacum curvidens M.P.Chr. n. sp.
Spec. orig.: Iceland, Blönduós, 15.VII.1937, leg. M. P. Christiansen. Plate I,
fig. 9. Plate XIV, fig. 127.
Planta 20—30 cm alta. Folia laete viridia, lutescentia, superne valde purpureo-