Symphyotrichum defoliatum - Unknown
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Internal ID UUID643fd167675ef821033490
Scientific name Symphyotrichum defoliatum
Authority (Parish) G.L.Nesom
First published in Phytologia 77: 279 (1995)

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Symphyotrichum defoliatum (formerly Aster bernardinus and Aster defoliatus) is a species of flowering plant in the family Asteraceae known by the common name San Bernardino aster. It is endemic to Southern California where it grows in grasslands and meadows, and it is of conservation concern. It is a perennial herbaceous plant growing from a long rhizome to a maximum height of 150 centimeters (5 feet). Leaves are widely lance-shaped to oblong and pointed, the largest ones near the base of the stem reaching up to 12 centimeters (4+3⁄4 inches) long. The stem and leaves are roughly hairy. The inflorescence is an array of flower heads with 15–40 pale violet ray florets around a center of golden disk florets. The fruit is a hairy cypsela with a long pappus. It is an allopolyploid species likely derived from the backcrossing of S. falcatum (chromosome base number x = 5) with S. ascendens (base number x = 13), its hybrid derivative. The backcrossing produced this species with a unique base number of x = 18 and diploid individuals with 2n = 36

Synonyms Top

Scientific name Authority First published in
Virgulaster bernardinus (H.M.Hall) Semple Phytologia 58: 431 (1985)
Aster deserticola J.F.Macbr. Contr. Gray Herb. 56: 36 (1918)
Aster bernardinus H.M.Hall Univ. Calif. Publ. Bot. 3: 79 (-80), pl (1907)
Aster chilensis var. bernardinus (H.M.Hall) Cronquist Amer. Midl. Naturalist 29: 461 (1943)
Aster defoliatus Parish Bot. Gaz. 38: 461 (1904)
Aster durandii Nutt. ex Durand Pacif. Rail. Rep. 5: 8.

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Language Common/alternative name
English san bernardino aster

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Distribution (via POWO/KEW) Top

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- Doubtful data
- Extinct
- Introduced
- Native

Links to other databases Top

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Database ID/link to page
World Flora Online wfo-0000115007
USDA Plants SYDE
Tropicos 50112596
KEW urn:lsid:ipni.org:names:1191110-2
The Plant List gcc-76484
Open Tree Of Life 3898554
Nature Serve 2.150751
IPNI 1191110-2
iNaturalist 79297
GBIF 3151596
Freebase /m/04q3b0r
EOL 481506
Calflora (Californian flora) 8989
USDA GRIN 434205
Wikipedia Symphyotrichum_defoliatum

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