Heermann's Lotus (Acmispon tomentosus)

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Acmispon tomentosus
A dense shrub that is pale-hairy all over, with ruby red branches and flower buds, bright yellow petals, and fleshy green leaves.
Acmispon tomentosus var. glabriusculus
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Faboideae
Genus: Acmispon
Species:
A. tomentosus
Binomial name
Acmispon tomentosus
(Hook. & Arn.) Govaerts[1]
Varieties

See text

Synonyms
17 synonyms
  • for Acmispon tomentosus[1]
    • Hosackia tomentosa Hook. & Arn.
    • Lotus eriophorus Greene
    • Lotus heermannii var. eriophorus (Greene) Ottley
    • Lotus tomentosus (Hook. & Arn.) Greene
    • Syrmatium eriophorum (Greene) A.Heller
    • Syrmatium tomentosum (Hook. & Arn.) Vogel
  • for A. t. var. tomentosus[2]
    • Acmispon heermannii var. orbicularis (A.Gray) Brouillet
    • Drepanolobus lanatus Nutt.
    • Hosackia heermannii var. orbicularis A.Gray
    • Lotus eriophorus var. heermannii Ottley
    • Lotus heermannii Greene
    • Lotus heermannii var. orbicularis (A.Gray) Isely
  • for A. t. var. glabriusculus[3]
    • Hosackia decumbens var. glabriuscula Hook. & Arn.
    • Hosackia tomentosa subsp. glabriuscula (Hook. & Arn.) Abrams
    • Acmispon heermannii (Durand & Hilg.) Brouillet
    • Hosackia heermannii Durand & Hilg.
    • Syrmatium heermannii (Durand & Hilg.) Greene

Acmispon tomentosus is a species of perennial plant in the family Fabaceae. It is native to California and northwestern Mexico.[1][4] The variety A. tomentosus var. glabriusculus has the synonym Acmispon heermannii.

Description

[edit]

The species is identified by small oval hairy succulent leaves. the flower buds are burgundy red and the flowers are yellow, looking much like a small version of a Lotus pedunculatus flower head.[4]

Sometimes this species occurs as an annual plant if it is growing in certain conditions.[5]

Taxonomy

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The species was first described by William Jackson Hooker and George Arnott Walker Arnott in 1832 as Hosackia tomentosa. It was moved to the genus Acmispon in 2018.[6]

Varieties

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As of October 2024, Plants of the World Online accepted two varieties:[1]

  • Acmispon tomentosus var. glabriusculus (Hook. & Arn.) Govaerts
  • Acmispon tomentosus var. tomentosus

A. tomentosus var. glabriusculus has the synonym Acmispon heermannii, and has been known by the common name Heermann's bird's-foot trefoil.[7] As of October 2024, Plants of the World Online and the Jepson eFlora accept this variety rather than the species A. heermannii.[8]

A. tomentosus var. tomentosus is generally identified by having less red in its buds and more hairy leaves.[9]

References

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  1. ^ a b c d "Acmispon tomentosus (Hook. & Arn.) Govaerts". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2024-10-24.
  2. ^ "Acmispon tomentosus var. tomentosus". Plants of the World Online. Royal Botanic Gardens, Kew. 2026. Retrieved 26 March 2026.
  3. ^ "Acmispon tomentosus var. glabriusculus (Hook. & Arn.) Govaerts". Plants of the World Online. Royal Botanic Gardens, Kew. 2026. Retrieved 26 March 2026.
  4. ^ a b "Acmispon tomentosus Calflora". www.calflora.org. Retrieved 2024-08-08.
  5. ^ "Acmispon tomentosus". ucjeps.berkeley.edu. Retrieved 2024-08-08.
  6. ^ "Acmispon tomentosus (Hook. & Arn.) Govaerts". The International Plant Names Index. Retrieved 2024-10-24.
  7. ^ NRCS. "Lotus heermannii (Durand & Hilg.) Greene". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 2024-10-24.
  8. ^ "Acmispon tomentosus var. glabriusculus". Jepson eFlora. The Jepson Herbarium. Retrieved 2024-10-24.
  9. ^ "Acmispon tomentosus var. tomentosus". Calflora. Retrieved 2024-08-08.

About

Native to the western U.S.

Synonyms

  • Acmispon heermannii

Relationships

No relationships added.

Links