Trifolium bifidum |
Trifolium bejariense |
|
---|---|---|
notch-leaf clover, Pinole clover, piñole clover |
bejar clover |
|
Habit | Herbs annual, 5–55 cm, sparsely pubescent or glabrous. | Herbs annual, 5–25 cm, pilose. |
Stems | erect, branched. |
erect or ascending, branched. |
Leaves | palmate; stipules ovate to lanceolate, 0.8–1.5 cm, margins entire or slightly serrate, apex acicular; petiole 1–7 cm; petiolules to 0.5 mm; leaflets 3, blades narrowly obcordate, obovate, oblanceolate, or linear, 1–2.5 × 0.3–0.7 cm, base cuneate, veins moderately thickened, margins serrate distally or entire, apex rounded, truncate, shallowly to deeply retuse, or deeply 2-fid, surfaces glabrous or hairy abaxially along midvein. |
palmate; stipules oblong to ovate, 0.8–1 cm, margins slightly denticulate or entire, apex acute to acuminate; petiole 1–5 cm; petiolules to 1 mm; leaflets 3, blades obovate, 0.7–1.4 × 0.3–0.8 cm, base broadly cuneate, veins thickened, recurved, margins slightly denticulate, apex rounded or retuse, surfaces pubescent abaxially, glabrous adaxially. |
Inflorescences | axillary or terminal, 5–30-flowered, globose to subglobose, 0.8–1.5 × 0.8–1.5 cm, rachis prolonged beyond flowers; involucres a very narrow rim, to 0.5 mm. |
axillary or terminal, 5–15-flowered, globose or subglobose, 1–2 × 1.5–2 cm; involucres floral bracts forming a small, scarious involucre. |
Peduncles | 3–8 cm. |
geniculate proximal to flowers, inflorescence appearing inverted, 2.5–11 cm. |
Pedicels | reflexed in fruit, 1–3 mm; bracteoles broadly triangular, membranous, to 0.5 mm. |
curved, 3–4 mm; bracteoles broadly rhombic, membranous, to 0.5 mm, margins dentate. |
Flowers | 6–8 mm; calyx campanulate, 3–3.6 mm, slightly hairy or glabrous, veins 10, tube 1–1.5 mm, lobes unequal, subulate, margins green or purple, orifice open; corolla pink or purple, 5–7 mm, banner elliptic to oblong, 5–7 × 3–4 mm, apex rounded, apiculate. |
7–9 mm; calyx campanulate, markedly bilabiate, venation strongly reticulate, 5–6 mm, sparsely pilose marginally, veins 5, reticulate in lobes, tube 0.7–1 mm, lobes unequal, abaxial 3 triangular-ovate, 2–3 mm, central abaxial lobe nearly linear, pubescent only along margins, adaxial 2 obovate, 5 mm, orifice open; corolla white, tinged with pink or lavender, darkening in age, 6–8 mm, banner broadly ovate, 6–8 × 5–6 mm, apex rounded, denticulate. |
Legumes | stipitate, obovoid, 3–4 mm. |
oblong-ovoid, 3–4 mm. |
Seeds | 1 or 2, brown, mottled, oblong, 2–3 mm, smooth. |
2–6, yellow, globose to mitten-shaped, 1.1–1.6 mm, rugose. |
2n | = 16. |
= 16. |
Trifolium bifidum |
Trifolium bejariense |
|
Phenology | Flowering Apr–Jun. | Flowering Mar–May. |
Habitat | Open woodlands, fields, roadsides, slopes, stream margins, meadows. | Sandy prairies, open woods. |
Elevation | 0–1200 m. (0–3900 ft.) | 0–100 m. (0–300 ft.) |
Distribution |
CA; OR; WA; BC; Mexico (Baja California)
|
AR; LA; TX |
Discussion | Trifolium bifidum ranges from Baja California, Mexico, northward through California to scattered sites in Oregon, Washington, and British Columbia. Recent re-evaluation of Trifolium bifidum and related species showed complete overlap in characters for the two varieties that have been recognized previously, with no clear distinctions between them (L. Rogers, pers. comm.). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Trifolium bejariense ranges in east-central Texas from Hunt and Lamar counties in the north, southward to Fort Bend and Harris counties, and westward to Travis and Wilson counties; the species is also known from Acadia and Rapides parishes in Louisiana, and Nevada County in Arkansas. L. F. McDermott reduced Trifolium bejariense to T. carolinianum forma bejariense (Moricand) McDermott. (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. bifidum var. decipiens, T. greenei, T. hallii | T. macrocalyx |
Name authority | A. Gray: Proc. Calif. Acad. Sci. 3: 102. (1864) | Moricand: Pl. Nouv. Amér., 2, plate 2. (1834) |
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