Trifolium ciliolatum |
Trifolium retusum |
|
---|---|---|
foothill clover, tree clover |
teasel clover |
|
Habit | Herbs annual, 5–50 cm, glabrous or sparsely hairy. | Herbs annual, 15–40 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 triangular-lanceolate, 0.7–1.5 cm, margins entire, apex stramineous, subulate; petiole 1.5–5 cm; petiolules 1 mm; leaflets 3, blades obovate, oblong, or elliptic, 0.8–1.8 × 0.4–0.9 cm, base cuneate, veins prominent, margins dentate-spinulose, apex rounded to 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, 15–30-flowered, globose, 0.8–1 × 0.8–1 cm; involucres absent. |
Peduncles | 2.5–12 cm. |
0.5–2 cm. |
Pedicels | erect becoming reflexed, 0.5–6 mm; bracteoles linear or cup-shaped, to 1 mm. |
recurved in fruit, 1 mm; bracteoles folded, linear-subulate, 4–5 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. |
4–5 mm; calyx obconic, 4–5 mm, glabrous, veins 10, tube 1.3–2.1 mm, lobes unequal, longer than tube, subulate, recurved in fruit, orifice open; corolla white or pink, 3.2–4.5 mm, banner ovate, 3–4 × 1–2 mm, apex acute to rounded, entire to slightly erose distally. |
Legumes | short-stipitate, ovoid, 5–10 mm. |
ovoid-oblong, 4.2–5.5 mm. |
Seeds | 1 or 2, brown, mottled, ovoid, 2.5–3 mm, smooth. |
2, brown, ovoid-reniform, 1 mm, minutely granulose. |
2n | = 16. |
= 16. |
Trifolium ciliolatum |
Trifolium retusum |
|
Phenology | Flowering Apr–Jun. | Flowering Apr–Jun. |
Habitat | Oak-pine chaparral, meadows, roadsides. | Roadsides, lawns. |
Elevation | 0–1500 m. (0–4900 ft.) | 100–800 m. (300–2600 ft.) |
Distribution |
CA; OR; WA; Mexico (Baja California)
|
CA; OR; WA; s Europe; w Asia; introduced also in s Africa; Pacific Islands (New Zealand); Australia [Introduced in North America] |
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 retusum is a very recent introduction in the flora area; it is known from relatively few counties in the Pacific Coast states. (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) | Linnaeus: Demonstr. Pl., 21. (1753) |
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