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PRIMULACEAE

PRIMROSE FAMILY

Anita F. Cholewa and Douglass M. Henderson

Annual, perennial herb, subshrub, glabrous to glandular-hairy
Leaves simple, basal or cauline, alternate, opposite, or whorled, sessile or petioled; stipules 0
Inflorescence sometimes scapose
Flower bisexual, radial; parts generally in 4's or 5's; calyx deeply lobed, often persistent; corolla lobes spreading to reflexed; stamens epipetalous, opposite corolla lobes; ovary generally superior, 1-chambered, placenta basal or free-central, style 1, stigma head-like
Fruit: capsule, circumscissile or 2–6-valved
Seeds small, few–many
Genera in family: ± 25 genera, 600 species: especially n hemisphere; several ornamental (Cyclamen , Dodecatheon , Primula )
Reference: [Channell & Wood 1959 J Arnold Arbor 40:268–288]

DODECATHEON

SHOOTING STAR

Perennial, glabrous or glandular-hairy; roots fleshy-fibrous
Leaves basal
Inflorescence: umbel, 1 per scapose peduncle, terminal, few–many-flowered, subtended by bracts
Flower nodding; parts in 4's or 5's; sepals reflexed, later erect, persistent; corolla tube short, lobes reflexed; stamens exserted, filaments very short, wide, often fused, anthers erect, ± lanceolate, surrounding style; ovary superior, style slender, ± exserted from anthers
Fruit ± 5-valved or circumscissile, ovate to spheric
Species in genus: ± 14 species: generally North America
Etymology: (Greek: 12 gods, presumably the Olympians)
Reference: [Thompson 1953 Contr Dudley Herb 4:73–154]
Polyploid group; species sometimes intergrade.

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