Trifolium ciliolatum |
Trifolium palmeri |
|
---|---|---|
foothill clover, tree clover |
Palmer's clover, southern island clover |
|
Habit | Herbs annual, 5–50 cm, glabrous or sparsely hairy. | Herbs annual, 4–40 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 lanceolate, 0.5–2.5 cm, margins entire or slightly serrate, apex acuminate; petiole 0.5–5 cm; petiolules to 1 mm; leaflets 3, blades narrowly elliptic or lanceolate, 0.8–3 × 0.3–0.8 cm, base cuneate, veins thickened, margins setose-serrulate, apex acute, 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, 10–20-flowered, globose to subglobose, 0.5–2 × 0.5–2 cm, rachis prolonged beyond flowers; involucres absent. |
Peduncles | 2.5–12 cm. |
1–5 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, broadly triangular, 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. |
5–9 mm; calyx narrowly campanulate, 5–6.5 mm, glabrous, veins 10, tube 2–3 mm, lobes unequal, narrowly triangular to acicular, margins green or purple, membranous, orifice open; corolla pink or purple, 5–9 mm, banner narrowly elliptic-oblong, 5–9 × 3–4 mm, apex narrowly rounded to acute. |
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, yellow, purple-mottled, mitten-shaped, 2 mm, smooth. |
2n | = 16. |
= 16. |
Trifolium ciliolatum |
Trifolium palmeri |
|
Phenology | Flowering Apr–Jun. | Flowering Mar–Jun. |
Habitat | Oak-pine chaparral, meadows, roadsides. | Thin soils on slopes. |
Elevation | 0–1500 m. (0–4900 ft.) | 0–50 m. (0–200 ft.) |
Distribution |
CA; OR; WA; Mexico (Baja California)
|
CA; 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.) |
Trifolium palmeri is known from the islands off the coast of southern California and Baja California, Mexico. It was long considered a variety of T. gracilentum but molecular analyses support its recognition as distinct (N. W. Ellison et al. 2006). (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. gracilentum var. palmeri |
Name authority | Bentham: Pl. Hartw., 304. (1849) | S. Watson: Proc. Amer. Acad. Arts 11: 132. (1876) |
Web links |