Trifolium haydenii |
Trifolium ciliolatum |
|
---|---|---|
Hayden's clover |
foothill clover, tree clover |
|
Habit | Herbs perennial, 5–10 cm, glabrous. | Herbs annual, 5–50 cm, glabrous or sparsely hairy. |
Stems | ascending, cespitose, short-branched. |
erect, branched. |
Leaves | mostly basal, palmate; stipules lanceolate, 0.4–0.8 cm, margins entire or lobed, apex acute or acuminate; petiole 1–6 cm; petiolules to 0.5 mm; leaflets 3, blades broadly ovate, 0.4–2 × 0.3–1.5 cm, base cuneate, veins thickened distally, ± straight, sometimes arching distally, 0.5+ mm apart, 5–10 pairs of primary veins, margins sharply antrorse-serrate, apex acute, short-apiculate, surfaces glabrous. |
palmate; stipules ovate-lanceolate, 1–1.5 cm, margins entire, sometimes ciliate, apex acuminate; petiole 1–13 cm; petiolules 0.5 mm; leaflets 3, blades elliptic to oblong or obovate, 0.8–3.5 × 0.5–1.5 cm, base cuneate, veins thickened, margins serrate proximally, obscurely denticulate distally, apex usually rounded or retuse, rarely acute, surfaces glabrous. |
Inflorescences | terminal, 5–20-flowered, erect, globose or subglobose, 0.5–1.5 × 0.8–2.5 cm, rachis prolonged beyond flowers, undivided or forked, often bearing sterile flower buds distally; involucres a narrow, membranous, dentate rim, 0.5 mm. |
axillary or terminal, 10–30-flowered, ovoid to subglobose, 0.7–2.2 × 0.5–2 cm; involucres a narrow rim, 0.5 mm, membranous, dentate. |
Peduncles | straight distally, proximal to inflorescence, 5–8 cm. |
2.5–12 cm. |
Pedicels | strongly reflexed, 1.5 mm; bracteoles broadly ovate, truncate, membranous, to 0.5 mm. |
erect becoming reflexed, 0.5–6 mm; bracteoles linear or cup-shaped, to 1 mm. |
Flowers | 13–17 mm; calyx campanulate, 4.5–6.5 mm, glabrous, veins 10 (5 sometimes faint), tube 2–3 mm, lobes subequal, narrowly triangular-subulate, equaling tube, orifice open; corolla salmon, buff-pink, or pink, with white or cream tips, 13–17 mm, banner broadly elliptic-oblong, 13–17 × 6–8 mm, apex rounded, retuse or slightly apiculate. |
6–13 mm; calyx broadly campanulate, 5–11 mm, glabrous, veins 10, tube 1–5 mm, lobes unequal, elliptic to linear, margins hyaline, dentate or pectinate, ciliate, sinuses narrow, orifice open; corolla white, pink, or purple, 5–13 mm, banner broadly ovate, 6–13 × 4–7 mm, apex rounded, apiculate. |
Legumes | stipitate, obovoid-oblong, 6–7 mm. |
short-stipitate, ovoid, 5–10 mm. |
Seeds | 1–4, brown, lenticular-ovoid, 2.5–3 mm, smooth. |
1 or 2, brown, mottled, ovoid, 2.5–3 mm, smooth. |
2n | = 16. |
= 16. |
Trifolium haydenii |
Trifolium ciliolatum |
|
Phenology | Flowering Jun–Aug. | Flowering Apr–Jun. |
Habitat | Alpine and subalpine slopes. | Oak-pine chaparral, meadows, roadsides. |
Elevation | 2200–3800 m. (7200–12500 ft.) | 0–1500 m. (0–4900 ft.) |
Distribution |
ID; MT; WY
|
CA; OR; WA; Mexico (Baja California)
|
Discussion | Trifolium haydenii, which is found in east-central Idaho, southwestern Montana, and northwestern Wyoming, appears related to T. kingii, T. productum, and similar species (J. M. Gillett 1972) and is sometimes confused with T. latifolium (Gillett 1969), from which it differs by the absence of hairs. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Trifolium ciliolatum is relatively widespread in California and is found in scattered sites in Baja California, Oregon, and Washington. Trifolium ciliatum Nuttall (1848), which pertains here, is a later homonym of T. ciliatum E. D. Clarke (1813). (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. idahoense | T. ciliatum var. discolor |
Name authority | Porter in F. V. Hayden: Prelim. Rep. U.S. Geol. Surv. Montana, 480. (1872) — (as haydeni) | Bentham: Pl. Hartw., 304. (1849) |
Web links |