Trifolium ciliolatum |
Trifolium rollinsii |
|
---|---|---|
foothill clover, tree clover |
Rollins' clover |
|
Habit | Herbs annual, 5–50 cm, glabrous or sparsely hairy. | Herbs perennial, 5–20 cm, glabrous. |
Stems | erect, branched. |
ascending, cespitose, 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. |
mostly basal, palmate; stipules ovate, 1 cm, margins entire, apex blunt; petiole 2–6 cm; petiolules to 1 mm; leaflets 3, blades obovate or rhombic, 0.6–1.3 × 0.6–1 cm, base cuneate, veins prominent, margins denticulate, apex rounded or retuse, apiculate, surfaces pale abaxially, 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. |
terminal or axillary, 8–15-flowered, appearing turned to one side, obconic, 1.3–1.8 × 1.1–2.5 cm, rachis prolonged beyond flowers, undivided or forked, often bearing sterile flower buds distally; involucres absent. |
Peduncles | 2.5–12 cm. |
curved distally proximal to flowers, 3–9 cm. |
Pedicels | erect becoming reflexed, 0.5–6 mm; bracteoles linear or cup-shaped, to 1 mm. |
reflexed, 1–1.2 mm; bracteoles minute. |
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. |
10–13 mm; calyx purple, campanulate, 5–6 mm, glabrous, veins 10, tube 3.5 mm, lobes equal, subulate, 2 mm, orifice open; corolla purple, often with white tips, 15 mm, banner obovate, 11–13 × 5–6 mm, apex flared. |
Legumes | short-stipitate, ovoid, 5–10 mm. |
not seen. |
Seeds | 1 or 2, brown, mottled, ovoid, 2.5–3 mm, smooth. |
not seen. |
2n | = 16. |
|
Trifolium ciliolatum |
Trifolium rollinsii |
|
Phenology | Flowering Apr–Jun. | Flowering Jun–Aug. |
Habitat | Oak-pine chaparral, meadows, roadsides. | Wind-swept alpine areas. |
Elevation | 0–1500 m. (0–4900 ft.) | 3000–3100 m. (9800–10200 ft.) |
Distribution |
CA; OR; WA; Mexico (Baja California)
|
NV |
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 rollinsii is known from the Toiyabe Range in Lander and Nye counties in central Nevada. (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. kingii subsp. rollinsii, T. macilentum var. rollinsii |
Name authority | Bentham: Pl. Hartw., 304. (1849) | J. M. Gillett: Madroño 21: 453, fig. 2. (1972) |
Web links |