Trifolium owyheense |
Trifolium parryi |
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Owyhee clover |
Parry's clover |
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Habit | Herbs perennial, 10–20 cm, glaucous, glabrous. | Herbs perennial, 10–20 cm, glabrous. | ||||||||
Stems | cespitose, spreading, branched proximally, sparsely branched distally. |
erect or ascending, loosely cespitose, sometimes rhizomatous, sparsely branched. |
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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 oblong, 0.5–2 cm, margins entire, apex acute to short-acuminate; petiole 2–10 cm; petiolules 0.5 mm; leaflets 3, blades elliptic to obovate, 1–4.1 × 0.5–1.6 cm, base cuneate, veins fine, margins entire, serrulate, or dentate, apex usually acute or obtuse, rarely retuse or apiculate, surfaces glabrous. |
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Inflorescences | terminal, 20–30-flowered, globose, usually formed of 2 sessile heads, 2.5–5 × 2.5–5 cm; involucres absent. |
terminal, 15–20-flowered, globose, ovoid, or ellipsoid, 1.4–3.7 × 1.8–3 cm; involucres formed of distinct or connate bracteoles, apex acute or obtuse. |
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Peduncles | 3–7 cm, surpassing subtending leaves. |
2.5–15 cm. |
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Pedicels | erect, reflexed in proximalmost flowers, 1 mm; bracteoles cuplike, 0.5 mm. |
erect, reflexed slightly, or only those of proximal flowers reflexed, 1 mm; bracteoles purplish, oblong, 3–6 mm, scarious. |
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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. |
12–22 mm; calyx campanulate, slightly gibbous, 6–9 mm, glabrous, veins 10, tube 3–4 mm, lobes unequal, subulate to narrowly triangular, orifice open; corolla pale purplish violet, keel petals darker purple, 10–22 mm, banner broadly elliptic or obovate, 10–22 × 8–10 mm, apex rounded, acute, or retuse. |
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Legumes | ellipsoid, 4–5 mm. |
stipitate, oblong, 6–7 mm. |
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Seeds | 1 or 2, yellow-mottled, mitten-shaped, 2–3 mm, smooth. |
1–4, tan or brown, mitten-shaped, 1.5–2 mm, smooth, dull. |
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Trifolium owyheense |
Trifolium parryi |
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Phenology | Flowering May–Jun. | |||||||||
Habitat | Dry shale hillsides on diatomaceous earth. | |||||||||
Elevation | 1000–2000 m. (3300–6600 ft.) | |||||||||
Distribution |
ID; OR
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w United States
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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.) |
Subspecies 3 (3 in the flora). Subdivision of Trifolium parryi into three subspecies (J. M. Gillett 1965) or two varieties (D. Isely 1998) was rejected by R. C. Barneby (1989). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 11. | FNA vol. 11. | ||||||||
Parent taxa | Fabaceae > subfam. Faboideae > Trifolium | Fabaceae > subfam. Faboideae > Trifolium | ||||||||
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Subordinate taxa | ||||||||||
Name authority | Gilkey: Madroño 13: 169, fig. 1. (1956) | A. Gray: Amer. J. Sci. Arts, ser. 2, 33: 409. (1862) | ||||||||
Web links |