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Sibara filifolia
Also called Santa Cruz Island Rockcress
Santa Cruz Island winged rockcress (Sibara filifolia) is a rare, federally endangered annual wildflower in the cabbage family, endemic to the Channel Islands of California. It is not a common garden plant, and cultivation advice is limited to its native coastal sage scrub conditions.
Sibara filifolia, the Santa Cruz Island winged rockcress or Santa Cruz Island rockcress, is a rare species of flowering plant in the family Brassicaceae. It is endemic to the Channel Islands of California, where it is now known from a few occurrences on San Clemente Island and one population on Catalina Island.
It was once present on Santa Cruz Island, and perhaps other Channel Islands, but these occurrences were extirpated by feral goats and pigs. The plant was feared extinct until small remaining occurrences were discovered in 1986. A 1995 estimate of the total remaining population was 500 individuals. The plant became a federally listed endangered species of the United States in 1997, along with Cercocarpus traskiae and Lithophragma maximum, two other rare Channel Islands plants.
Sibara filifolia grows in the coastal sage scrub of two islands off the coast of southern California.
Text excerpted from the Wikipedia article Sibara filifolia by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
