Asclepias solanoana

Asclepias solanoana is a rare species of milkweed known by the common names serpentine milkweed, prostrate milkweed, and solanoa. It is endemic to California, where it grows only in the North Coast Ranges north of the San Francisco Bay Area.

Asclepias solanoana

Vulnerable  (NatureServe)[1]
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Gentianales
Family: Apocynaceae
Genus: Asclepias
Species:
A. solanoana
Binomial name
Asclepias solanoana
Synonyms[2]
  • Gomphocarpus purpurascens A.Gray (Illegitimate, non A.Rich.)
  • Schizonotus purpurascens (A.Gray) A.Gray
  • Solanoa purpurascens (A.Gray) Greene
  • Solanoana purpurascens (A.Gray) Greene ex Kuntze

Description

This is a robust perennial herb producing smooth purple stems which lie prostrate along the ground. The thick leaves are arranged oppositely in pairs along the stem. The leaf has an oval or heart-shaped blade supported on a short petiole. The inflorescence is a heavy spherical cluster of flowers. Each flower has a central array of rounded hoods which are pink to brown and a corolla which is reflexed against the stalk or extends outwards.

References
  1. "NatureServe Explorer - Asclepias solanoana". NatureServe Explorer Asclepias solanoana. NatureServe. 2022-05-30. Retrieved 30 May 2022.
  2. "TPL, treatment of Asclepias solanoana". The Plant List; Version 1. (published on the internet). Royal Botanic Gardens, Kew and Missouri Botanical Garden. 2010. Retrieved February 5, 2013.


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