| 词条 | Erigeron reductus |
| 释义 |
|regnum = Plantae |unranked_divisio = Angiosperms |unranked_classis = Eudicots |unranked_ordo = Asterids |ordo = Asterales |familia = Asteraceae |tribus = Astereae |genus = Erigeron |species = E. reductus |binomial = Erigeron reductus |binomial_authority = (Cronquist) G.L.Nesom |synonyms_ref=[1] |synonyms=*Erigeron inornatus var. reductus Cronquist
|}}Erigeron reductus is a species of flowering plant in the daisy family known by the common name lesser California rayless fleabane.[2] It is endemic to California, from Trinity County south as far as Alameda County and El Dorado County.[2]Erigeron reductus grows in rocky habitats in several mountain ranges in the northern part of the state. It is a perennial herb producing several spreading to erect stems up to 30 centimeters (12 inches) long from a woody caudex and root system. Each stem is lined evenly with small, thready leaves and topped with an inflorescence of one or more flower heads. Each glandular flower head is up to a centimeter (0.4 inches) wide and contains many yellow disc florets but no ray florets. The fruit is an achene with a pappus of bristles.[3]
The two varieties do intergrade in their region of overlap (Trinity County).[4] References1. ^1 The Plant List, Erigeron reductus (Cronquist) G.L.Nesom 2. ^1 Calflora taxon report, University of California, Erigeron reductus (Cronq.) G. Nesom, Fleabane, lesser California rayless fleabane, rayless daisy 3. ^1 2 Flora of North America, Erigeron reductus (Cronquist) G. L. Nesom, 1992. California rayless fleabane 4. ^[https://www.biodiversitylibrary.org/page/12987460#page/46/mode/1up Nesom, Guy L. 1992. Phytologia 72(3): 200-203] includes distribution map on page 201 External links
9 : Erigeron|Endemic flora of California|Flora of the Klamath Mountains|Flora of the Sierra Nevada (U.S.)|Natural history of the California chaparral and woodlands|Natural history of the California Coast Ranges|Natural history of the San Francisco Bay Area|Trinity Mountains (California)|Plants described in 1947 |
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