Trifolium willdenovii |
Trifolium kingii |
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sand clover, thimble clover, tomcat clover, Willdenow's clover |
King's clover |
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Habit | Herbs annual, 10–60 cm, glabrous. | Herbs perennial, 2–40 cm, glabrous. |
Stems | erect, branched. |
erect or ascending, branched from root stock. |
Leaves | palmate; stipules lanceolate or ovate, 1–2 cm, margins dentate or lacerate, apex acuminate; petiole 1–8 cm; petiolules 0.5 mm; leaflets 3, blades linear, lanceolate, or elliptic, 1–5 × 0.2–1.5 cm, base cuneate, veins fine, margins serrate, apex acute, blunt, or retuse, surfaces glabrous. |
palmate; stipules lanceolate, 0.8–3 cm, margins entire, apex acuminate; petiole 0.8–15 cm; petiolules 1 mm; leaflets 3, blades ovate, elliptic, or lanceolate, 0.5–8 × 0.4–2.6 cm, basal blades thick, base cuneate, veins prominent, margins sharply serrate, those of basal leaves entire, sometimes shortly setose, apex acute, obtuse, or obcordate, surfaces glabrous. |
Inflorescences | axillary or terminal, 10–50-flowered, globose or ovoid, 1–3.5 × 1–3 cm; involucres flattened or bowl-shaped, 3–9 mm, when folded, not hiding flowers except proximally, incised 1/4–1/3 their length. |
terminal or axillary, 20–35-flowered, inverted or horizontal, depressed-globose or obovoid, 1.5–3.2 × 1.5–3 cm, rachis internodes not especially elongated; involucres absent. |
Peduncles | 2–15 cm. |
curved apically, 3–14 cm. |
Pedicels | erect, 0.5 mm; bracteoles absent. |
reflexed, 0.5 mm; bracteoles broadly ovate, blunt, minute. |
Flowers | 12–20 mm; calyx tubular-campanulate, slit between adaxial lobes, 6–9 mm, glabrous, veins 10–15, tube 3–7 mm, lobes unequal, triangular or subulate, usually 3-fid or shouldered below apex, orifice open; corolla usually white with purple spot, sometimes lavender or pink or all white, 10–18 mm, banner narrowly oblong, 12–20 × 3–4 mm, apex obtuse or retuse. |
12–16 mm; calyx campanulate, 5–6 mm, usually sparsely pubescent, sometimes glabrate, veins 5, tube 2–3.5 mm, lobes equal, 1–1.5 times tube, subulate, curved, orifice open; corolla usually pink-purple, rarely white, 13–15 mm, banner lanceolate-ovate, 15–18 × 4–5 mm, apex rounded; ovaries glabrous. |
Legumes | ellipsoid, 3 mm. |
flattened, ellipsoid, 3–4 mm. |
Seeds | 1 or 2, yellow, mottled, globose-ellipsoid, 1.5–2.5 mm, smooth. |
1–3, brown, flattened ovoid, 2–2.2 mm, smooth. |
2n | = 16. |
= 16. |
Trifolium willdenovii |
Trifolium kingii |
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Phenology | Flowering Mar–Jul. | Flowering Jul–Aug. |
Habitat | Roadsides, meadows, lawns, hillsides, stream margins, open oak chaparral. | Alpine meadows, stream banks, open aspen and spruce-fir woods. |
Elevation | 0–2500 m. (0–8200 ft.) | 2200–3300 m. (7200–10800 ft.) |
Distribution |
AZ; CA; ID; OR; WA; BC; Mexico (Baja California)
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CO; NV; UT
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Discussion | Trifolium willdenovii was described by M. Zohary and D. Heller (1984) as one of the most variable clover species in North America. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Trifolium kingii is widely distributed throughout Utah (S. L. Welsh et al. 2008), is found in Mesa County southward to Dolores County in Colorado, and is found rarely in eastern 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. involucratum, T. aciculare, T. nuttallii, T. scabrellum, T. segetum, T. tridentatum, T. tridentatum var. aciculare, T. tridentatum var. scabrellum, T. tridentatum var. segetum, T. tridentatum var. watsonii, T. trimorphum, T. watsonii | |
Name authority | Sprengel: Syst. Veg. 3: 208. (1826) | S. Watson: Botany (Fortieth Parallel), 59. (1871) |
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