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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.

MICROSERIS

Kenton L. Chambers

Annual or perennial herb, ± mealy (hairs drying as minute white scales); sap milky
Leaves mostly basal, generally linear to (ob)lanceolate, generally variably entire to pinnately lobed
Inflorescence: heads solitary, ligulate, ± nodding in bud; involucre generally fusiform to spheric; phyllaries in 2–several series, outer overlapping, inner often ± black-hairy; receptacle naked
Flowers 5–many; corollas white to orange, often reddish below, ligules = to >> involucre, readily withering
Fruit cylindric to fusiform, generally square-topped, not beaked; ribs ± 10, ± scabrous; pappus of generally 5–many ± lanceolate, bristle-tipped scales
Etymology: (Greek: small chicory)
Reference: [Chambers Contr Dudley Herb Stanford U: 1955 4:207–312 & 1957 5:57–68]
Hybridization common. Self-pollinating (annual) or self-incompatible and ± complex (perennial herb).

Native

M. laciniata (Hook.) Sch.Bip.

Perennial 15–100 cm, ± branched and leafy below
Leaf 10–50 cm
Inflorescence: involucre 14–30 mm; outer phyllaries linear to deltate, < to << inner
Flowers 13–100+; ligules yellow, >> involucre
Fruit 3.5–8 mm, not or barely wider at tip, gray to brown, smooth or outermost fruits scabrous on ribs; pappus scales 5–24, < 8 mm, white, bristles 4–12 mm, smooth to barbed
Chromosomes: 2n=18
Ecology: Open grassland, meadows, rocky slopes, forest edge
Elevation: < 2000 m.
Bioregional distribution: Northwestern California, High Cascade Range, Modoc Plateau
Distribution outside California: Oregon

Native

subsp. laciniata


Inflorescence: outer phyllaries narrowly ovate or wider, thin, generally glabrous, keel 0
Flowers 25–100+
Fruit: pappus scales 5–10, < 8 mm, bristles smooth below
Ecology: Habitats and range of sp
Elevation:
Bioregional distribution: Northwestern California, High Cascade Range, Modoc Plateau Intergrades with subsp. leptosepala in NCoR
Horticultural information: TRY.

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bioregional map for MICROSERIS%20laciniata%20subsp.%20laciniata being generated
 


Retrieve Jepson Interchange Index to Plant Names entry for Microseris laciniata subsp. laciniata
Retrieve dichotomous key for Microseris
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