The Botany of Iceland - 01.12.1942, Page 93
THE TARAXACUM-FLORA OF ICELAND
319
dd. Fruits with a short pyramid with several teeth at the summit.
95. T. dentex M.P.Chr.
cc. Leaves obovate-lanceolate, inner leaves with patent, long, subulate teeth.
(See 93. T. hyþochoeris Dahlst.)
bb. Leaves + lobed.
c. 2—4, + remotely placed lobes.
d. Head small and with dense flowers. Lobes narrow and obtuse, hamate, entire
—few-dentate.
96. T. uncatilobum M.P.Chr.
dd. Head large, + radiating.
e. Leaves lingulate-lanceolate, shallow-lobed. Lobes triangular, obtuse, patent,
often entire. Interlobe with concave edge. Fruits with long, broad, almost
cylindrical pyramid, half as broad as the fruit.
97. T. concavum M.P.Chr.
ee. Leaves + deeply lobed. Lobes acute, + subulate dentate.
f. Terminal lobe of leaves, especially on outer leaves, long, hastate with nar-
rower + abrupt, lingulate point. Anthers with only a little pollen.
98. T. leucocephalum M.P.Chr.
ff. Terminal lobe of leaves, especially on outer leaves, short, hastate—rhombic
or broadly ovoid.
g. Leaves bluish-green, terminal lobe broadly ovoid. Pyramid of fruit very
long, about 1.2 mm, narrow cylindrical.
99. T. ciconium M.P.Chr.
gg. Leaves yellowish-green, terminal lobe short, hastate-rhombic. Pyramid of
fruit about 1 mm long, broad, subcylindrical.
(See 92. T. rhomboideum M.P.Chr.)
cc. 4—7 + densely placed lobes.
d. Anthers without (rarely with) pollen. Leaves long, lanceolate; lobes + down-
ward curved, deltoid-sigmoidic, base often strongly convex. Terminal lobe
short, galeate with abrupt point.
100. T. gibberosum M.P.Chr.
dd. Anthers with pollen.
e. Fruit straw-yellow—brownish.
f. Lobes from broad base, long, narrow, patent—upward-turned, on both sides
and in the interlobe + strongly subulate-dentate. Head tousled, hardly
entirely open. Fruit very large and with very long spines above.
101. T. hoplites M.P.Chr.
ff. Lobes patent— + downward-turned or downward-curved.
g. Lobes with suddenly constricted, long and acute point. Terminal lobe +
sagittate—strongly hastate. Fruit rather small.
102. T. islandicum Dahlst.
gg. Lobes deltoid, dentate with obtuse point. Fruit broad and thick, strongly
toothed.
103. T. latidens M.P.Chr.
ee. Fruit red or reddish. Leaves rather light-green with triangular-deltoid lobes.
Terminal lobe usually small, triangular-hastate. Corollas of a medium dull-
yellow.
104. T. acromaurum Dahlst.