Trifolium owyheense |
Trifolium arvense |
|
---|---|---|
Owyhee clover |
hare's foot, hare's-foot clover, rabbit's-foot clover, rabbit-foot clover |
|
Habit | Herbs perennial, 10–20 cm, glaucous, glabrous. | Herbs annual, 5–30 cm, villous. |
Stems | cespitose, spreading, branched proximally, sparsely branched distally. |
erect, branched distally. |
Leaves | palmate; stipules broadly obovate, 1–2 cm, fused at base, margins slightly lobed, apex acute; petiole 2–6 cm; petiolules 1–1.5 mm; leaflets 3, blades ovate, obovate, or orbiculate, slightly overlapping, 1–2 × 0.7–2.3 cm, base truncate to rounded, veins prominent, margins sparsely dentate, apex rounded, emarginate, surfaces glabrous. |
palmate; stipules linear-lanceolate to ovate-oblong, 0.5–0.8 cm, margins entire, apex filiform; petiole 0.4–4.5 cm; petiolules 1+ mm; leaflets 3, blades linear-oblong to narrowly elliptic, 1–2 × 0.2–0.5 cm, base cuneate, veins fine, margins denticulate distally, apex mucronate, surfaces hairy. |
Inflorescences | terminal, 20–30-flowered, globose, usually formed of 2 sessile heads, 2.5–5 × 2.5–5 cm; involucres absent. |
axillary or terminal, 30–100-flowered, ovoid or cylindric, elongate in fruit, 1–2.3 × 0.9–1.2 cm; involucres absent. |
Peduncles | 3–7 cm, surpassing subtending leaves. |
0.5–2.5 cm. |
Pedicels | erect, reflexed in proximalmost flowers, 1 mm; bracteoles cuplike, 0.5 mm. |
straight, to 0.5 mm; bracteoles obtuse, to 0.1 mm. |
Flowers | 15–21 mm; calyx tubular-campanulate, 9–12 mm, pilose, veins 10, tube 4.5–6 mm, lobes subequal, abaxialmost longest, subulate, orifice open; corolla deep pink or magenta, 20–23 mm, banner tubular for most their length, 18–22 × 5–7 mm, apex flared. |
5–8 mm; calyx campanulate, 5–8 mm, villous, veins 10, tube 1.2–1.8 mm, lobes purple or pink, subequal, setacous, orifice open, hairy; corolla white to pink, 3–6 mm, much shorter than calyx, banner narrowly ovate-elliptic, 5–5.5 × 1–1.5 mm, apex obtuse. |
Legumes | ellipsoid, 4–5 mm. |
ovoid, leathery distally, transversely dehiscent, 1.5–2 mm. |
Seeds | 1 or 2, yellow-mottled, mitten-shaped, 2–3 mm, smooth. |
1, yellow, globose, 1 mm, smooth, glossy. |
2n | = 14. |
|
Trifolium owyheense |
Trifolium arvense |
|
Phenology | Flowering May–Jun. | Flowering Mar–Jun. |
Habitat | Dry shale hillsides on diatomaceous earth. | Waste places, roadsides, fields. |
Elevation | 1000–2000 m. (3300–6600 ft.) | 0–1300 m. (0–4300 ft.) |
Distribution |
ID; OR
|
AL; AR; AZ; CA; CT; DC; DE; FL; GA; IA; ID; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; MT; NC; ND; NH; NJ; NM; NY; OH; OK; OR; PA; RI; SC; TN; TX; UT; VA; VT; WA; WI; WV; BC; NB; NF; NS; ON; PE; QC; SPM; s Europe; w Asia; n Africa [Introduced in North America; introduced also in s South America (Argentina, Chile, Uruguay), s Africa, Pacific Islands (New Zealand), Australia]
|
Discussion | Trifolium owyheense is known from about 40 populations in a small portion of east-central Malheur County in Oregon, and immediately adjacent Owyhee County in Idaho (M. Mancuso 2001). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Trifolium arvense is widely distributed throughout the flora area. It was listed among cultivated clovers by F. J. Hermann (1953); J. M. Gillett (1985) expressed doubt that it had been cultivated. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | Fabaceae > subfam. Faboideae > Trifolium | Fabaceae > subfam. Faboideae > Trifolium |
Sibling taxa | ||
Name authority | Gilkey: Madroño 13: 169, fig. 1. (1956) | Linnaeus: Sp. Pl. 2: 769. (1753) |
Web links |
|