UW Burke Herbarium species comparison

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Hieracium longipilum

Hieracium umbellatum

narrowleaf hawkweed, umbellate hawkweed
Habit Perennial from a short rhizome, the stem 4-12 dm. tall, glabrous below, becoming stellate-puberulent above, without long, spreading hairs, and with milky juice.
Leaves

Leaves alternate, the basal and lower cauline small and soon deciduous, the others, except for the reduced upper ones, nearly alike in size and shape;

leaves sessile but not clasping, up to 10 cm. long and 2 cm. wide, with a few coarse, irregular teeth, and short, stiff hairs on the margins.
Flowers

Heads several in an open inflorescence, 40- to 110-flowered;

involucre 6-13 mm. high, its bracts imbricate, glabrous;

corollas ligulate, yellow.
Fruits

Achene.

Hieracium longipilum

Hieracium umbellatum
Flowering time July-September
Habitat Moist places in thickets and open woods.
Distribution
[WildflowerSearch map]
[BONAP county map]
Occurring east of the Cascades crest and in the Columbia River Gorge in Washington; Alaska to northwestern Oregon, east across the northern half of North America to the Atlantic Coast; circumboreal.
[WildflowerSearch map]
[BONAP county map]
Origin Native
Conservation status Not of concern
Sibling taxa
H. albiflorum, H. aurantiacum, H. caespitosum, H. flagellare, H. ×floribundum, H. glomeratum, H. lachenalii, H. longiberbe, H. maculatum, H. murorum, H. pilosella, H. piloselloides, H. sabaudum, H. scouleri, H. ×stoloniflorum, H. triste, H. umbellatum
H. albiflorum, H. aurantiacum, H. caespitosum, H. flagellare, H. ×floribundum, H. glomeratum, H. lachenalii, H. longiberbe, H. maculatum, H. murorum, H. pilosella, H. piloselloides, H. sabaudum, H. scouleri, H. ×stoloniflorum, H. triste
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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