Solidago guiradonis

Solidago guiradonis is an uncommon species of goldenrod known by the common name Guirado goldenrod.[2] It is native to the Central California Coast Ranges of central California, in southern San Benito and western Fresno Counties.

Solidago guiradonis
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Asterids
Order:
Asterales
Family:
Asteraceae
Genus:
Solidago
Species:
S. guiradonis
Binomial name
Solidago guiradonis
Synonyms[1]

Aster guiradonis (A.Gray) Kuntze

The species is a strict serpentine endemic with a range that includes the New Idria Serpentine Mass and Laguna Mountain Serpentine Mass. It is an obligate wetland species that occurs on the banks of perennial streams and rivers and also perennial seeps on the New Idria Serpentine Mass and Laguna Mountain Serpentine Mass.

Description

Solidago guiradonis is a perennial herb growing from a woody caudex, sometimes reaching heights well over one meter (40 inches). The leaves are up to 20 centimeters (8 inches) long near the base of the plant but shorter farther up. They are linear to lance-shaped and have winged petioles that expand to nearly sheath the stem at the bases. The herbage is mostly hairless.[3]

The inflorescence is a cluster of sometimes as many as 190 small flower heads in a branching, elongated array. Each flower head contains 10-21 yellow disc florets surrounded by up to 8-10 narrow yellow ray florets each 1 or 2 millimeters long.[3]

References
  1. The Plant List, Solidago guiradonis A.Gray
  2. "Solidago guiradonis". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 18 November 2015.
  3. Flora of North America, A. Gray, 1865. Guirado’s goldenrod


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