UW Burke Herbarium species comparison

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Trifolium macrocephalum

Trifolium douglasii

big-head clover, large-head clover

Douglas's clover
Habit Pubescent perennial from a thick root and rhizomes, the stems erect, 1-3 dm. tall.
Leaves

Leaves with 5-9 leaflets, these rather thick, oblanceolate to obcordate, 1.5-2.5 cm. long;

stipules ovate-lanceolate, their margins lacerate.

Flowers

Heads mostly solitary and terminal, 3-5 cm. broad and long, the peduncles exceeding the leaves;

flowers 22-28 mm. long, pale pinkish to rose-pink, spreading to erect, the pedicels very short;

calyx 2/3 as long as the corolla, the 5 teeth awl-shaped, plumose, many times as long as the tube.

Fruits

Pod 1-seeded.

Trifolium macrocephalum

Trifolium douglasii
Flowering time April-June June-July
Habitat Shrub-steppe, sagebrush desert and ponderosa pine woodlands. Moist to wet areas in including open meadows, forested wetlands, and streambanks.
Distribution
Occurring east of the Cascades crest in Washington; Washington, south through eastern Oregon, east to Idaho and Nevada.
[WildflowerSearch map]
[BONAP county map]
Occurring east of the Cascades crest in eastern and southeastern Washington; eastern Washington to east-central Oregon, east to eastern Idaho.
[WildflowerSearch map]
[BONAP county map]
Origin Native Native
Conservation status Not of concern Endangered in Washington (WANHP)
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. 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, T. wormskioldii
T. albopurpureum, T. arvense, T. aureum, T. bifidum, T. campestre, T. cernuum, T. ciliolatum, T. cyathiferum, T. depauperatum, T. dichotomum, 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, T. wormskioldii
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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