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foothill clover, tree clover

arrow-leaf clover

Habit Mostly glabrous annual with several decumbent to erect stems 1.5-5 dm. long.
Leaves

Leaves alternate, trifoliate;

stipules 1-2.5 cm. long, with entire, acuminate tips;

leaflets oblong-elliptic to oblanceolate or broader, 1-3.5 cm. long, finely denticulate the entire length, the teeth needle-like.

Flowers

Inflorescence of 10- to 50-flowered heads, the heads axillary as well as terminal, 1-2 cm. long, subglobose, without an involucre;

flowers white to purplish, 6-12 mm. long, erect but becoming reflexed as the pedicles elongate to up to 6 mm.;

calyx glabrous, about equal to the corolla, the tube 10-veined, the 5 teeth fringed, 2-3 times as long as the tube, the upper 2 much the longest.

Fruits

Pod 1-seeded

Trifolium ciliolatum

Trifolium vesiculosum

Flowering time April-June May-July
Habitat Wet meadows to rather dry, sandy soil. Roadsides, fields, wastelots, and other disturbed open areas.
Distribution
Occurring east of the Cascades crest in south-central Washington; south-central Washington to California.
[WildflowerSearch map]
[BONAP county map]
Occurring in a few locations west of the Cascades crest in lowland western Washington; Washington to California; also in the south-central and southeastern U.S.
[WildflowerSearch map]
[BONAP county map]
Origin Native Introduced from Europe
Conservation status Not of concern Not of concern
Sibling taxa
T. albopurpureum, T. arvense, T. aureum, T. bifidum, T. campestre, T. cernuum, 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, T. wormskioldii
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. willdenovii, T. wormskioldii
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