| 词条 | Erigeron calvus |
| 释义 |
|name = Erigeron calvus |image = |regnum = Plantae |unranked_divisio = Angiosperms |unranked_classis = Eudicots |unranked_ordo = Asterids |ordo = Asterales |familia = Asteraceae |tribus = Astereae |genus = Erigeron |species = E. calvus |binomial = Erigeron calvus |binomial_authority =Coville |}}Erigeron calvus is a very rare species of flowering plants in the daisy family known by the common names bald daisy or bald fleabane.[1] It has been found only once, in a collection made in 1891 at the western foot of the Inyo Mountains near the community of Swansea in Inyo County.[1][3][2] The species is listed as "seriously endangered" and may quite possibly be extinct.[3] Erigeron calvus is a small biennial or perennial herb about 12 cm (5 inches) tall, producing a taproot. One plant can produce several flower heads, sometimes one per branch, sometimes in groups of 2 or 3. Each head has 50-100 small ray florets that are small and resemble disc florets, plus numerous genuine disc florets.[4][1]References1. ^1 [https://www.biodiversitylibrary.org/page/3783277#page/99/mode/1up Coville, Frederick Vernon 1892. Proceedings of the Biological Society of Washington 7(2): 69–70] 2. ^1 Calflora taxon report, University of California, Erigeron calvus Cov., bald daisy, bald fleabane 3. ^California Native Plant Society, Inventory of Rare and Endangered Plants, Erigeron calvus Cov. 4. ^1 Flora of North America, Erigeron calvus Coville, Bald daisy External links
3 : Erigeron|Flora of California|Plants described in 1892 |
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