UW Burke Herbarium species comparison

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Trifolium wormskioldii

cow clover, salt marsh clover
Habit Glabrous, tap-rooted perennial, decumbent-based and often rhizomatous, stems 1-8 dm. long.
Leaves

Leaves trifoliate, long-petiolate;

leaflets linear-elliptic to oblong-obovate, 1-3 cm. long, finely serrulate;

stipules 1-4 cm. long, lacerate-margined and acuminate.
Flowers

Inflorescence of 2- to 60-flowered, involucrate heads 2-3 cm. broad on axillary peduncles;

involucre flared, saucer-shaped, from 2 cm. broad and lacerately 8- to 12-lobed, to shallowly lobed, the lobes entire;

calyx glabrous, about 2/3 as long as the corolla, the tube 10-veined, the 5 teeth lanceolate and needle-tipped, equal to each other and the tube;

corolla pea-like,10-18 mm. long, erect or spreading, reddish to purple, often white-tipped.
Fruits

Pod 1-4 seeded.

Trifolium wormskioldii
Flowering time May-September
Habitat Costal dunes to moist meadows and stream banks at low to moderate elevations in the mountains.
Distribution
Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east to Idaho, Colorado, and New Mexico.
[WildflowerSearch map]
[BONAP county map]
Origin Native
Conservation status Not of concern
Sibling taxa
T. albopurpureum, T. arvense, T. aureum, T. bifidum, T. campestre, T. cernuum, T. ciliolatum, T. cyathiferum, T. depauperatum, T. dichotomum, T. douglasii, T. dubium, T. eriocephalum, T. fragiferum, T. glomeratum, T. gracilentum, T. hirtum, T. hybridum, T. incarnatum, T. latifolium, T. longipes, T. macrocephalum, T. microcephalum, T. microdon, T. oliganthum, T. plumosum, T. pratense, T. repens, T. resupinatum, T. retusum, T. striatum, T. subterraneum, T. suffocatum, T. thompsonii, T. variegatum, T. vesiculosum, T. willdenovii
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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