Trifolium ciliolatum |
Trifolium jokerstii |
|
---|---|---|
foothill clover, tree clover |
Butte County golden clover, Jim's clover |
|
Habit | Herbs annual, 5–50 cm, glabrous or sparsely hairy. | Herbs annual, 5–20 cm, glabrous. |
Stems | erect, branched. |
erect-ascending, simple or cespitose, branched or unbranched. |
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, 0.8–2 cm, margins toothed, apex rounded to acute; petiole 1–9 cm; petiolules 0.5 mm; leaflets 3, blades elliptic to obovate, 0.5–3.2 × 0.4–1.5 cm, base cuneate, veins fine to slightly thickened, margins usually serrulate, rarely nearly lobed, teeth shortly aristate, apex usually acute or obtuse, rarely emarginate, 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, 10–30-flowered, subglobose, 1.2–3 × 1.2–3 cm; involucres widely campanulate to nearly flat, 6–11 mm. |
Peduncles | 2.5–12 cm. |
2–15 cm. |
Pedicels | erect becoming reflexed, 0.5–6 mm; bracteoles linear or cup-shaped, to 1 mm. |
straight, 0.5 mm; bracteoles absent. |
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. |
10–16 mm; calyx campanulate, inflated in fruit, 7–9 mm, sparsely pubescent, veins 5, tube 3.5–4.5 mm, lobes unequal, abaxial and lateral 2- or 3-fid, adaxial unbranched, segments plumose, apex setaceous, orifice open; corolla yellow, 10–15 mm, banner broadly ovate, proximally inflated in fruit, distally narrowed into twisted tip, 10–15 × 3–5 mm, apex obtuse, truncate, or emarginate-apiculate. |
Legumes | short-stipitate, ovoid, 5–10 mm. |
stipitate, ovoid, 3.3–3.5 mm. |
Seeds | 1 or 2, brown, mottled, ovoid, 2.5–3 mm, smooth. |
1 or 2, dark brown, ellipsoid to mitten-shaped, 3.1–3.4 mm, rugose. |
2n | = 16. |
|
Trifolium ciliolatum |
Trifolium jokerstii |
|
Phenology | Flowering Apr–Jun. | Flowering Mar–May. |
Habitat | Oak-pine chaparral, meadows, roadsides. | Wet meadows, streamsides. |
Elevation | 0–1500 m. (0–4900 ft.) | 300–400 m. (1000–1300 ft.) |
Distribution |
CA; OR; WA; Mexico (Baja California)
|
CA |
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.) |
Trifolium jokerstii is known only from Butte County, from Table Mountain and along a stream adjacent to it (M. A. Vincent and R. Morgan 1998). (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 | |
Name authority | Bentham: Pl. Hartw., 304. (1849) | Vincent & Rand. Morgan: Novon 8: 91, fig. 1. (1998) |
Web links |