Difference between revisions of "Stebbinsoseris decipiens"
Amer. J. Bot. 78: 1025. 1991.
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|common_names=Santa Cruz silverpuffs | |common_names=Santa Cruz silverpuffs | ||
| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=E | ||
| + | |label=Endemic | ||
| + | }} | ||
|basionyms={{Treatment/ID/Basionym | |basionyms={{Treatment/ID/Basionym | ||
|name=Microseris decipiens | |name=Microseris decipiens | ||
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|publication title=Amer. J. Bot. | |publication title=Amer. J. Bot. | ||
|publication year=1991 | |publication year=1991 | ||
| − | |special status= | + | |special status=Endemic |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V19_541.xml |
|tribe=Asteraceae tribe Cichorieae | |tribe=Asteraceae tribe Cichorieae | ||
|genus=Stebbinsoseris | |genus=Stebbinsoseris | ||
Latest revision as of 19:53, 5 November 2020
Peduncles 15–60 cm. Involucres 6–19 mm. Florets 10–80(–100); corollas yellow. Cypselae brown to purplish, narrowly truncate-fusiform, 5–8 mm, each filled by embryo or no more than distal 0.5 mm vacant, apices not enlarged at bases of pappi; pappi 7–10 mm, scale bodies 3–5 mm, faces glabrous, aristae 4–5 mm. 2n = 36.
Phenology: Flowering Apr–May.
Habitat: Sandy, shale, or serpentine soils, grasslands, coastal scrub, chaparral, closed-cone pine woods, roadsides
Elevation: 10–500 m
Discussion
Of conservation concern.
Morphologic and molecular evidence (K. L. Chambers 1955; C. Irmler et al. 1982; R. S. Wallace and R. K. Jansen 1990) proves that Stebbinsoseris decipiens is an allopolyploid derivative of the hybrid Microseris bigelovii × Uropappus lindleyi. It occurs in a limited area of central coastal California where the parental taxa are sympatric. Diploid hybrids between the parents, produced experimentally (Chambers), had irregular meiosis and were completely seed-sterile. The species is included in Inventory of Rare and Endangered Plants of California, ed. 6 (D. P. Tibor 2001).