|Jepson Flora Project: Jepson Interchange|
|TREATMENT FROM THE JEPSON MANUAL (1993)||
previous taxon |
Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
Annual to tree
Leaves basal or cauline, alternate to whorled, simple to compound
Inflorescence: 1° inflorescence a head, each resembling a flower, 1many, generally arrayed in cymes, generally subtended by ± calyx-like involucre; flowers 1many per head
Flowers bisexual, unisexual, or sterile, ± small, of several types; calyx 0 or modified into pappus of bristles, scales, or awns, which is generally persistent in fruit; corolla radial or bilateral (rarely 0), lobes generally (0)45; stamens 45, anthers generally fused into cylinder around style, often appendaged at tips, bases, or both, filaments generally free, generally attached to corolla near throat; pistil 1, ovary inferior, 1-chambered, 1-seeded, style 1, branches 2, generally hair-tufted at tip, stigmas 2, generally on inside of style branches
Fruit: achene, cylindric to ovoid, generally deciduous with pappus attached
Genera in family: ± 1300 genera, 21,000 species (largest family of dicots): worldwide. Largest family in CA. Also see tribal key to CA genera: Strother 1997 Madroño 44(1):128. See glossary p. 25 for illustrations of general family characteristics.
Perennial, ± scapose from generally branched rhizome; rosettes often clumped
Leaves simple, sessile, ± basal
Inflorescence glandular, sometimes hairy; heads radiate or discoid, generally solitary; phyllaries generally as many as ray flowers, ± folded around ray ovaries; chaff scales in 1 involucre-like series, ± equal, ciliate-hairy
Ray flowers 013; corollas yellow to red; ligules often deeply lobed
Disk flowers 784; corollas yellow to red; style branches long, tips bristly
Fruit ± cylindric, ± straight, ascending-hairy, black; pappus of flat, ciliate-plumose bristles
Species in genus: 3 species: montane CA, w NV, OR
Etymology: (Latin: small Raillardia or Railliardia )
Reference: [Baldwin et al. 1991 Proc Natl Acad Sci. USA 88:18401843]
Plant ± 2550 cmSee the CNPS Inventory for information about endangerment and rarity.
Leaves basal or mostly opposite, 2.515 cm, linear to lanceolate or oblanceolate, entire or minutely dentate, glabrous or upper glandular
Inflorescence: heads radiate, 13, bell-shaped to hemispheric; peduncles 1028 cm, often subtended by 1few generally alternate bracts; phyllaries 613; chaff scales 1624, 1014 mm, free or ± fused, sometimes overlapping
Ray flowers 613; corollas 1120 mm, orange to reddish
Disk flowers ± 4584; corollas 811.5 mm, orange to reddish
Fruit 58 mm, oblanceolate; pappus bristles ± 817, 711 mm
Ecology: Wet meadows, streambanks
Elevation: 12002200 m.
Bioregional distribution: Klamath Ranges (Trinity Alps, Scott Mtns).