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©Copyright 1993 by the Regents of the University of California

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  • Up-to-date information about California vascular plants is available from the Jepson eFlora.

ASTERACEAE

SUNFLOWER FAMILY

David J. Keil, Family Editor and author, except as specified

Annual to tree
Leaves basal or cauline, alternate to whorled, simple to compound
Inflorescence: 1° inflorescence a head, each resembling a flower, 1–many, generally arrayed in cymes, generally subtended by ± calyx-like involucre; flowers 1–many 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)4–5; stamens 4–5, 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):1–28. See glossary p. 25 for illustrations of general family characteristics.

RAILLARDELLA

Bruce G. Baldwin

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 0–13; corollas yellow to red; ligules often deeply lobed
Disk flowers 7–84; 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 88:1840–1843]

Native

R. pringlei Greene

SHOWY RAILLARDELLA

Plant ± 25–50 cm
Leaves basal or mostly opposite, 2.5–15 cm, linear to lanceolate or oblanceolate, entire or minutely dentate, glabrous or upper glandular
Inflorescence: heads radiate, 1–3, bell-shaped to hemispheric; peduncles 10–28 cm, often subtended by 1–few generally alternate bracts; phyllaries 6–13; chaff scales 16–24, 10–14 mm, free or ± fused, sometimes overlapping
Ray flowers 6–13; corollas 11–20 mm, orange to reddish
Disk flowers ± 45–84; corollas 8–11.5 mm, orange to reddish
Fruit 5–8 mm, oblanceolate; pappus bristles ± 8–17, 7–11 mm
Chromosomes: 2n=34
Ecology: Wet meadows, streambanks
Elevation: 1200–2200 m.
Bioregional distribution: Klamath Ranges (Trinity Alps, Scott Mtns).
See the CNPS Inventory for information about endangerment and rarity.
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bioregional map for RAILLARDELLA%20pringlei being generated
 


Retrieve Jepson Interchange Index to Plant Names entry for Raillardella pringlei
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