The Botany of Iceland - 01.12.1942, Qupperneq 67

THE TARAXACUM-FLORA OF ICELAND
293
aa. Immaculata. Leaves without purplish blotches on the upper surface.
b. Leaves lingulate-lanceolate, entire and + toothed—shallow-lobed.
c. Fruit fusiform, at top a few, long teeth. Outer bracts very broad, roundish
ovoid with short, obtuse ends.
62. T. dilutiroseum M.P.Chr.
cc. Fruit broadest at top with a + abrupt, ;+ long pyramid. Outer bracts more
narrow, appressed—slightly spreading.
d. Pyramid of the fruit 0.5—0.7 mm long, conic. Fruit at top with a few coarse
teeth. Petioles pale. Mid-nerve purple-coloured on both sides.
63. T. calanthum Dahlst.
dd. Pyramid of the fruit about 1 mm long, subcylindrical. At the summit of
fruit long, tapering teeth.
64. T. angustifrons M.P.Chr.
bb. Leaves + deeply and regularly lobed.
c. Anthers without pollen.
d. Leaves crispate, greyish-green, rather strongly hairy, densely lobed. Head
bright-yellow. Fruit fusiform, at the summit finely toothed—warty.
65. T. crispifrons M.P.Chr.
dd. Leaves not crispate.
e. Outer bracts ovoid-lanceolate.
f. Fruit broadest at top with + abrupt pyramid. Lobes densely placed, often
with strongly convex upper edge. The terminal lobe + large, ovoid-sagittate
or cordate with the greatest breadth just above the downward curved, short
basal lobes.
66. T. cordatifrons M.P.Chr.
ff. Fruit fusiform, finely warted. Lobes on intermediate- and inner-leaves +
remotely placed with long, narrow, patent—reflexed, sharp end. The
terminal lobe + sagittate.
67. T. subspectabile M.P.Chr.
ee. Outer bracts narrow, linear-lanceolate—linear. Fruit at summit finely
spinulose or warty. Pyramid very short.
68. T. leptolepis M.P.Chr.
cc. Anthers with pollen. (See also 68. T. leptolepis M.P.Chr.).
d. Leaves crispate, dark yellowish-green. Lobes densely placed, broad, often
strongly convex at the upper edge and with a short, narrow end. The terminal
lobe often oblique, sagittate-hastate. Head very dark-yellow.
69. T. scalenum M.P.Chr.
dd. Leaves smooth, dark-green.
e. The plant slender. Petioles winged. Leaves very shallow lobed with 2—3
short, deltoid lobes and large, ovoid-sagittate, o—coarse-toothed terminal
lobe.
70. T. skutustadirense M.P.Chr.
ee. The plant medium-sized. Petioles broad-winged. Leaves long, lingulate—-
lanceolate, regularly lobed. Terminal lobe short, triangular—hastate. Mid-
nerve on both sides to the end shinning purple-coloured.
71. T. ostrinum M.P.Chr.
Maculata.
55. Taraxacum reclinatum M.P.Chr. n. sp.
Spec. orig.: Iceland, Reykjahlíð at Mývatn, 27.VII.1937, leg. M. P. Christian-
sen. Plate V, fig. 55. Plate XXX, fig. 175.
The Botany of Iceland. Vol. III. Part III.
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