Trifolium bifidum |
Trifolium appendiculatum |
|
---|---|---|
notch-leaf clover, Pinole clover, piñole clover |
large white-tip clover |
|
Habit | Herbs annual, 5–55 cm, sparsely pubescent or glabrous. | Herbs annual, 7–80+ cm, glabrous. |
Stems | erect, branched. |
ascending or erect, 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 lanceolate or ovate, 0.3–1.3 cm, margins lacerate, apex acute to acuminate; petiole 2–7.3 cm; petiolules to 0.9 mm; leaflets 3, blades obovate-obcordate, elliptic, or obovate, 0.3–2.6 × 0.2–1.1 cm, base cuneate, veins thickened, margins denticulate, apex acute or retuse, surfaces glabrous. |
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, 4–25-flowered, subglobose or globose, 0.7–2 × 0.8–3 cm; involucres flat, 3.2–6.5 mm, incised 1/2 their length, lobes 4–7, lacerate. |
Peduncles | 3–8 cm. |
1.7–7.5 cm. |
Pedicels | reflexed in fruit, 1–3 mm; bracteoles broadly triangular, membranous, to 0.5 mm. |
straight, to 0.5 mm; bracteoles absent. |
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. |
7–25 mm; calyx campanulate, not slit between adaxial lobes, 3.5–7.4 mm, glabrous, veins 10–20, tube 1.5–3.3 mm, lobes subequal, narrowly triangular, margins usually entire, orifice open; corolla deep purple, usually white-tipped, 6.5–17 mm, banner obovate, 6.3–16 × 1.5–4 mm, apex emarginate. |
Legumes | stipitate, obovoid, 3–4 mm. |
oblong or ellipsoid, 3.6–3.8 mm. |
Seeds | 1 or 2, brown, mottled, oblong, 2–3 mm, smooth. |
2, blackish brown, mottled, ovoid or ellipsoid, 1.9–2.8 mm, smooth. |
2n | = 16. |
= 16. |
Trifolium bifidum |
Trifolium appendiculatum |
|
Phenology | Flowering Apr–Jun. | Flowering Mar–Jun. |
Habitat | Open woodlands, fields, roadsides, slopes, stream margins, meadows. | Coastal areas, foothills, mountain meadows, ditches, wet areas. |
Elevation | 0–1200 m. (0–3900 ft.) | 0–1400 m. (0–4600 ft.) |
Distribution |
CA; OR; WA; BC; Mexico (Baja California)
|
CA; OR |
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 appendiculatum is found throughout California, although never east of the Sierra Nevada, and into southern Oregon. (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. appendiculatum var. rostratum, T. calophyllum, T. morleyanum, T. phaeocephalum, T. rostratum, T. splendens, T. trilobatum, T. variegatum var. major, T. variegatum var. rostratum, T. variegatum var. trilobatum |
Name authority | A. Gray: Proc. Calif. Acad. Sci. 3: 102. (1864) | Lojacono: Nuovo Giorn. Bot. Ital. 15: 181. (1883) |
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