Trifolium owyheense |
Trifolium appendiculatum |
|
---|---|---|
Owyhee clover |
large white-tip clover |
|
Habit | Herbs perennial, 10–20 cm, glaucous, glabrous. | Herbs annual, 7–80+ cm, glabrous. |
Stems | cespitose, spreading, branched proximally, sparsely branched distally. |
ascending or erect, branched. |
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 lanceolate or ovate, 0.3–1.3 cm, margins lacerate, apex acute to acuminate; petiole 2–7.3 cm; petiolules to 0.9 mm; leaflets 3, blades obovate-obcordate, elliptic, or obovate, 0.3–2.6 × 0.2–1.1 cm, base cuneate, veins thickened, margins denticulate, apex acute or retuse, surfaces glabrous. |
Inflorescences | terminal, 20–30-flowered, globose, usually formed of 2 sessile heads, 2.5–5 × 2.5–5 cm; involucres absent. |
axillary, 4–25-flowered, subglobose or globose, 0.7–2 × 0.8–3 cm; involucres flat, 3.2–6.5 mm, incised 1/2 their length, lobes 4–7, lacerate. |
Peduncles | 3–7 cm, surpassing subtending leaves. |
1.7–7.5 cm. |
Pedicels | erect, reflexed in proximalmost flowers, 1 mm; bracteoles cuplike, 0.5 mm. |
straight, to 0.5 mm; bracteoles absent. |
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. |
7–25 mm; calyx campanulate, not slit between adaxial lobes, 3.5–7.4 mm, glabrous, veins 10–20, tube 1.5–3.3 mm, lobes subequal, narrowly triangular, margins usually entire, orifice open; corolla deep purple, usually white-tipped, 6.5–17 mm, banner obovate, 6.3–16 × 1.5–4 mm, apex emarginate. |
Legumes | ellipsoid, 4–5 mm. |
oblong or ellipsoid, 3.6–3.8 mm. |
Seeds | 1 or 2, yellow-mottled, mitten-shaped, 2–3 mm, smooth. |
2, blackish brown, mottled, ovoid or ellipsoid, 1.9–2.8 mm, smooth. |
2n | = 16. |
|
Trifolium owyheense |
Trifolium appendiculatum |
|
Phenology | Flowering May–Jun. | Flowering Mar–Jun. |
Habitat | Dry shale hillsides on diatomaceous earth. | Coastal areas, foothills, mountain meadows, ditches, wet areas. |
Elevation | 1000–2000 m. (3300–6600 ft.) | 0–1400 m. (0–4600 ft.) |
Distribution |
ID; OR
|
CA; OR |
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 appendiculatum is found throughout California, although never east of the Sierra Nevada, and into southern Oregon. (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 | ||
Synonyms | T. appendiculatum var. rostratum, T. calophyllum, T. morleyanum, T. phaeocephalum, T. rostratum, T. splendens, T. trilobatum, T. variegatum var. major, T. variegatum var. rostratum, T. variegatum var. trilobatum | |
Name authority | Gilkey: Madroño 13: 169, fig. 1. (1956) | Lojacono: Nuovo Giorn. Bot. Ital. 15: 181. (1883) |
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