Trifolium ciliolatum |
Trifolium nanum |
|
---|---|---|
foothill clover, tree clover |
dwarf clover |
|
Habit | Herbs annual, 5–50 cm, glabrous or sparsely hairy. | Herbs perennial, 4–10 cm, glabrous. |
Stems | erect, branched. |
cespitose, matted, acaulescent. |
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, 1–2 cm, margins entire, apex acuminate, sometimes forked; petiole 0.3–2.5 cm; petiolules to 0.2 mm; leaflets 3, blades oblanceolate or obovate, 0.3–1.2 × 0.1–0.5 cm, base cuneate, veins ± thickened, margins toothed, apex acute or acuminate, 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. |
terminal or axillary, 1–4-flowered, umbellate, 1.5–2 × 0.5–1 cm, rachis not prolonged beyond flowers; involucres a narrow, membranous, dentate rim, 1 mm. |
Peduncles | 2.5–12 cm. |
0.5–3 cm. |
Pedicels | erect becoming reflexed, 0.5–6 mm; bracteoles linear or cup-shaped, to 1 mm. |
erect, 1 mm; bracteoles cuplike, membranous, 0.5–1 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. |
15–20 mm; calyx campanulate, 4–7 mm, glabrous, veins 5–10, tube 3–4 mm, lobes equal, triangular-acuminate, orifice open; corolla purple or violet, 15–20 mm, banner oblong, 15–20 × 7–9 mm, apex rounded, slightly retuse. |
Legumes | short-stipitate, ovoid, 5–10 mm. |
oblanceoloid, 9–11 mm. |
Seeds | 1 or 2, brown, mottled, ovoid, 2.5–3 mm, smooth. |
4–6, tan or brown, mitten-shaped, 2–2.2 mm, smooth, dull. |
2n | = 16. |
= 16. |
Trifolium ciliolatum |
Trifolium nanum |
|
Phenology | Flowering Apr–Jun. | Flowering Jun–Aug. |
Habitat | Oak-pine chaparral, meadows, roadsides. | Alpine slopes, tundra. |
Elevation | 0–1500 m. (0–4900 ft.) | 2600–4500 m. (8500–14800 ft.) |
Distribution |
CA; OR; WA; Mexico (Baja California)
|
CO; MT; NM; UT; WY
|
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 nanum is abundant in alpine tundra areas from Montana through Wyoming and Utah into Colorado (where it is most common) and northern New Mexico; populations are morphologically variable with regard to leaf size and petiole length, and this variability appears to be related to water availability (J. M. Gillett 1965). (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) | Torrey: Ann. Lyceum Nat. Hist. New York 1: 35, plate 3, fig. 4. (1824) |
Web links |