Trifolium ciliolatum |
Trifolium gracilentum |
|
---|---|---|
foothill clover, tree clover |
pin point clover, slender clover |
|
Habit | Herbs annual, 5–50 cm, glabrous or sparsely hairy. | Herbs annual, 2–60 cm, glabrous. |
Stems | erect, branched. |
erect or ascending, branched. |
Leaves | 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. |
palmate; stipules ovate-lanceolate, 0.5–2.5 cm, membranous, margins entire or slightly serrate, apex long-acuminate; petiole 0.5–9 cm; petiolules to 0.5 mm; leaflets 3, blades obovate to obcordate, 0.5–2.5 × 0.2–1.5 cm, base cuneate, veins moderately thickened, margins setose-serrulate, apex rounded, shallowly retuse, surfaces glabrous. |
Inflorescences | 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. |
axillary or terminal, 10–25-flowered, globose to subglobose, 0.5–2 × 0.5–2 cm, rachis prolonged beyond flowers; involucres a narrow, membranous, dentate rim, to 0.5 mm. |
Peduncles | 2.5–12 cm. |
1–9 cm. |
Pedicels | erect becoming reflexed, 0.5–6 mm; bracteoles linear or cup-shaped, to 1 mm. |
becoming dramatically reflexed, 3–4 mm; bracteoles low, cuplike, membranous, to 0.5 mm. |
Flowers | 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. |
5–7.5 mm; calyx narrowly campanulate, 4.5–6.5 mm, glabrous, veins 10, tube 2–2.5 mm, lobes unequal, long-triangular, margins green or purple, orifice open; corolla white, pink, or purple, 5–8 mm, banner ovate, 5–8 × 3–4 mm, apex broadly rounded, retuse or apiculate. |
Legumes | short-stipitate, ovoid, 5–10 mm. |
ovoid-ellipsoid, 4–6 mm. |
Seeds | 1 or 2, brown, mottled, ovoid, 2.5–3 mm, smooth. |
1 or 2, tan to brown, mitten-shaped, 1.1–1.5 mm, smooth. |
2n | = 16. |
= 16. |
Trifolium ciliolatum |
Trifolium gracilentum |
|
Phenology | Flowering Apr–Jun. | Flowering Mar–Jun. |
Habitat | Oak-pine chaparral, meadows, roadsides. | Open, grassy areas, gravelly ridges, roadsides, adobe slopes, moist places. |
Elevation | 0–1500 m. (0–4900 ft.) | 50–1200 m. (200–3900 ft.) |
Distribution |
CA; OR; WA; Mexico (Baja California)
|
AZ; CA; NV; OR; WA; Mexico (Baja California)
|
Discussion | 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.) |
Abundance of Trifolium gracilentum increases in response to burns (J. M. DiTomaso et al. 1999). The record of Trifolium gracilentum from South Carolina is a waif. (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. ciliatum var. discolor | T. denudatum, T. exile, T. gracilentum var. exile, T. gracilentum var. inconspicuum, T. gracilentum var. reductum, T. inconspicuum |
Name authority | Bentham: Pl. Hartw., 304. (1849) | Torrey & A. Gray: Fl. N. Amer. 1: 316. (1838) |
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