Jepson Flora Project: Jepson Interchange    

 
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Jepson Interchange (more information)
©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.

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]

TRIENTALIS

STARFLOWER

Perennial, low, glabrous; roots tuber-like
Stem erect, simple
Leaves at base of stem scale-like, others well developed, mainly crowded near stem tip
Inflorescence: flowers solitary in axils of few uppermost leaves; pedicels slender
Flower: parts generally in 5's to 7's; sepals ± free, persistent; corolla spreading, ± flat, = or > calyx, white or pinkish to rose, lobes free ± to base; filaments fused at base, slender, anthers oblong
Fruit 5-valved, spheric
Seeds few
Species in genus: 3 species: North America, n Eurasia
Etymology: (Latin: 1/3 foot, from height of plant)

Native

T. latifolia Hook.


Stem 5–30 cm
Leaf 25–90 mm, 10–50 mm wide, ovate to obovate
Flower: corolla 8–15 mm wide
Ecology: Shaded places, especially woodlands
Elevation: < 1400 m.
Bioregional distribution: North Coast, North Coast Ranges, High Cascade Range (Mount Shasta), Sierra Nevada, San Joaquin Valley, San Francisco Bay Area, South Coast Ranges
Distribution outside California: to British Columbia
Horticultural information: TRY.

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