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Erigeron wilkenii
O'Kane
Family:
Asteraceae
Wilken's Fleabane
FNA
Resources
Guy L. Nesom in Flora of North America (vol. 20)
Perennials,
10-20 cm (occurring mostly singly); taprooted, caudices simple or branches relatively slender.
Stems
erect, sparsely strigillose (hairs white, stiff), eglandular.
Leaves
mostly basal (persistent); (gray-green) blades narrowly oblanceolate to subspatulate, 9-62 × 1-5 mm, cauline linear-bractlike (bases enlarged, purplish-membranous), margins entire, faces sparsely and closely strigose, eglandular.
Heads
1.
Involucres
3.4-4.6 × 6-8.5 mm.
Phyllaries
in 2-3 series, sparsely hirsute, minutely glandular.
Ray florets
(8-)11-12; corollas adaxially white, abaxially light pink, 4.5-6 mm, laminae not coiling or reflexing.
Disc corollas
2.2-3.5 mm.
Cypselae
ca. 1.8 mm, 2-nerved, faces sparsely strigose;
pappi:
outer apparently 0, inner of (12-)20-30 bristles.
Flowering May-Jun. Sloping alluvium and colluvium at w-facing bases of sheer sandstone walls; of conservation concern; 1500-2300 m; Colo.
Erigeron wilkenii
is known only from Pool Canyon in Dinosaur National Monument.
Open Interactive Map
Click to Display
30 Total Images
Development supported by National Science Foundation Grants (
DBI 9983132
,
BRC 0237418
,
DBI 0743827
,
DBI 0847966
)
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