Trifolium bejariense |
Trifolium palmeri |
|
---|---|---|
bejar clover |
Palmer's clover, southern island clover |
|
Habit | Herbs annual, 5–25 cm, pilose. | Herbs annual, 4–40 cm, glabrous. |
Stems | erect or ascending, branched. |
erect or ascending, branched. |
Leaves | 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. |
palmate; stipules lanceolate, 0.5–2.5 cm, margins entire or slightly serrate, apex acuminate; petiole 0.5–5 cm; petiolules to 1 mm; leaflets 3, blades narrowly elliptic or lanceolate, 0.8–3 × 0.3–0.8 cm, base cuneate, veins thickened, margins setose-serrulate, apex acute, surfaces glabrous. |
Inflorescences | axillary or terminal, 5–15-flowered, globose or subglobose, 1–2 × 1.5–2 cm; involucres floral bracts forming a small, scarious involucre. |
axillary or terminal, 10–20-flowered, globose to subglobose, 0.5–2 × 0.5–2 cm, rachis prolonged beyond flowers; involucres absent. |
Peduncles | geniculate proximal to flowers, inflorescence appearing inverted, 2.5–11 cm. |
1–5 cm. |
Pedicels | curved, 3–4 mm; bracteoles broadly rhombic, membranous, to 0.5 mm, margins dentate. |
becoming dramatically reflexed, 3–4 mm; bracteoles low, broadly triangular, membranous, to 0.5 mm. |
Flowers | 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. |
5–9 mm; calyx narrowly campanulate, 5–6.5 mm, glabrous, veins 10, tube 2–3 mm, lobes unequal, narrowly triangular to acicular, margins green or purple, membranous, orifice open; corolla pink or purple, 5–9 mm, banner narrowly elliptic-oblong, 5–9 × 3–4 mm, apex narrowly rounded to acute. |
Legumes | oblong-ovoid, 3–4 mm. |
ovoid-ellipsoid, 4–6 mm. |
Seeds | 2–6, yellow, globose to mitten-shaped, 1.1–1.6 mm, rugose. |
1 or 2, yellow, purple-mottled, mitten-shaped, 2 mm, smooth. |
2n | = 16. |
= 16. |
Trifolium bejariense |
Trifolium palmeri |
|
Phenology | Flowering Mar–May. | Flowering Mar–Jun. |
Habitat | Sandy prairies, open woods. | Thin soils on slopes. |
Elevation | 0–100 m. (0–300 ft.) | 0–50 m. (0–200 ft.) |
Distribution |
AR; LA; TX |
CA; Mexico (Baja California) |
Discussion | 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.) |
Trifolium palmeri is known from the islands off the coast of southern California and Baja California, Mexico. It was long considered a variety of T. gracilentum but molecular analyses support its recognition as distinct (N. W. Ellison et al. 2006). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | T. macrocalyx | T. gracilentum var. palmeri |
Name authority | Moricand: Pl. Nouv. Amér., 2, plate 2. (1834) | S. Watson: Proc. Amer. Acad. Arts 11: 132. (1876) |
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