The Botany of Iceland - 01.12.1942, Side 57
THE TARAXACUM-FLORA OF ICELAND
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42. Taraxacum selenodon M.P.Chr. n. sp.
Spec. orig.: Iceland, Þingvellir, 7.VII.1937, leg. M. P. Christiansen. Plate III,
fig. 42. Plate XXIV, fig. 158.
Planta sat parva, 12—20 cm alta. Folia sat lucide saturate viridia, fere glabra,
lanceolata, integra—parum profunde lobata, petiolis late alatis—sat latis, pallidis—
leviter roseis, nervo mediano inferne leviter rosea. Fol. exteriorum lobis 2—3 utrinque,
deltoideis, patentibus—leviter reflexis, subacutis, saepe integris, lobo terminali sat
longo, sagittato—hastato. Folia intermedia et interiora lanceolata—late lanceolata,
integra, margine grosse dentata, dentibus robustis, reflexis—hamatis, denticulatis.
Involucrum brunneo-viride. Squamae exteriores laxe patentes—arcuato-recurvatae,
4—2 X 7—9 mm, ovatae—ovato-lanceolatae, subtus + brunneo-virides, + angustis-
sime purpureo-marginatae, supra glaucescentes, + purpureae, in apicem acutum,
paulo purpurascentem attenuatae.
Calathium c. 30 mm latum, saturate luteum, radians. Ligulae marginales c. 2.5
mm latae, subtus stria cano-rosea notatae, dentibus atro-olivaceis.
Antherae polline carentes.
Stigmata luteo-virescentia—virescentia.
Achenium griseo-brunneum, c. 3.6 mm longum, c. 1.1 mm latum, superne late,
robuste et acute spinulosum, ceterum laeve, in pyramidem anguste conicam—cylin-
dricam, 0.6—0.7 mm longam, basi saepe spinulosam sensim abiens. Rostrum 9—11
mm longum.
T. selenodon has fresh-green, lanceolate leaves. The outer leaves are 2—3-lobed,
the intermediate and inner leaves are entire and dentate. Teeth + claw-like. The
shape of the leaves recalls those of T. rhodoleþis Dahlst., but the latter has longer,
more downward bent, and more deeply purple-coloured bracts; the teeth of the