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Physical Description

provided by USDA PLANTS text
Annual, Herbs, Taproot present, Nodules present, Stems erect or ascending, Stems or branches arching, spreading or decumbent, Stems less than 1 m tall, Stems solid, Stems or young twigs glabrous or sparsely glabrate, Leaves alternate, Leaves petiolate, Stipules conspicuous, Stipules green, triangulate to lanceolate or foliaceous, Stipules persistent, Stipules clasping stem at the base, Stipules adnate to petiole, Leaves compound, Leaves palmately 2-3 foliate, Leaflets dentate or denticulate, Leaflets 3, Leaves glabrous or nearly so, Inflorescences racemes, Inflorescences globose heads, capitate or subcapitate, Inflorescence axillary, Inflorescence terminal, Bracteoles present, Flowers zygomorphic, Calyx 5-lobed, Calyx hairy, Calyx lobes exceeding or about equal to corolla, Petals separate, Corolla papilionaceous, Petals clawed, Petals pinkish to rose, Petals blue, lavander to purple, or violet, Banner petal narrow or oblanceolate, Banner petal spurred, Wing petals narrow, oblanceolate to oblong, Wing petals auriculate, Wing tips obtuse or rounded, Keel tips obtuse or rounded, not beaked, Stamens 9-10, Stamens diadelphous, 9 united, 1 free, Filaments glabrous, Style terete, Fruit a legume, Fruit unilocular, Fruit indehiscent, Fruit oblong or ellipsoidal, Fruit orbicular to subglobose, Fruit or valves persistent on stem, Fruit enclosed in calyx, Fruit glabrous or glabrate, Fruit 1-seeded, Fruit 2-seeded, Seeds cordiform, mit-shaped, notched at one end, Seed surface smooth, Seeds olive, brown, or black.
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Trifolium barbigerum

provided by wikipedia EN

Trifolium barbigerum is a species of clover known by the common name bearded clover.[1][2]

Distribution

The plant is native to central coastal and Northern California and Oregon, below 700 metres (2,300 ft) in elevation. Areas it is found include on the northern Channel Islands of California, the California Coast Ranges, and around the San Francisco Bay Area.[1]

It grows in many types of habitat, including coastal prairie, mixed evergreen forest, closed-cone pine forest, and wetlandriparian areas. It is also found in disturbed and cultivated areas.[1]

Description

Trifolium barbigerum is an annual herb growing decumbent to erect in form and hairy to hairless in texture. The leaves are divided into oval leaflets up to 2.5 centimeters long, sometimes having notches at the tips. The stipules on the leaves are large and variable in shape.

The inflorescence is a head of flowers up to 2.5 centimeters wide. The flowers are held in a bowl-shaped involucre of bracts with toothed edges. Each flower has a calyx of sepals narrowing into one or more bristles which are coated with long hairs. Within each calyx is the flower corolla which may be pinkish purple, white, or bicolored purple and white.

The bloom period is April to July.

Varieties

Trifolium barbigerum was formerly discussed classified with two varieties, that are not in current use:

  • Trifolium barbigerum var. andrewsii — reclassified as Trifolium grayi.[3]
  • Trifolium. barbigerum var. barbigerum — reclassified as a synonym of Trifolium barbigerum.[4]

References

  1. ^ a b c Calflora: Trifolium barbigerum
  2. ^ USDA, NRCS (n.d.). "Trifolium barbigerum". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 15 December 2015.
  3. ^ Calflora: Trifolium barbigerum var. andrewsii; not an active name; see Trifolium grayi . accessed 2.28.2016.
  4. ^ Calflora: Trifolium. barbigerum var. barbigerum; not an active name; see Trifolium barbigerum . accessed 2.28.2016.

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Trifolium barbigerum: Brief Summary

provided by wikipedia EN

Trifolium barbigerum is a species of clover known by the common name bearded clover.

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