Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

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



Dale W. McNeal, except as specified

Perennial to trees, from membranous bulb, fibrous corm, scaly rhizome, or erect caudex
Stem generally underground
Leaves generally basal, often withering early, alternate, generally ± linear
Inflorescence various, generally bracted
Flower generally bisexual, generally radial; perianth often showy, segments generally 6 in two petal-like whorls (outer sometimes sepal-like), free or fused at base; stamens 6 (or 3 + generally 3 ± petal-like staminodes), filaments sometimes attached to perianth or fused into a tube or crown; ovary superior or inferior, chambers 3, placentas generally axile, style generally 1, stigmas generally 3
Fruit: generally capsule, loculicidal or septicidal (berry or nut)
Genera in family: ± 300 genera, 4600 species: especially ± dry temp and subtropical; many cultivated for ornamental or food; some TOXIC. Here includes genera sometimes treated in Agavaceae, Amaryllidaceae, and other families.



Bryan D. Ness

Perennial; rhizome short, thick, horizontal to erect
Stem erect, 1 or more per plant
Leaves 3 in a single whorl, subtending flower, ± ovate
Flower bisexual, 1 per stem, erect to nodding; sepals 3, free, persistent, greenish; petals 3, free, withering, white, pinkish, yellowish, or purple; stamens 6; ovary chambers 3, styles 3
Fruit: capsule, berry-like
Seeds many, ovoid
Species in genus: ± 30–40 species: North America, Asia
Etymology: (Latin: three, from leaves)
Reference: [Freeman 1975 Brittonia 27:1–62]


T. albidum J.D. Freeman

Stem 2–7 dm
Leaf sessile, 7–20 cm, rounded to obtuse, generally ± brown-spotted
Flower generally with a sweet rose-like or ± spicy scent; sepals 3–8 cm, lanceolate; petals 4–11 cm, oblanceolate to obovate, white to pinkish, sometimes purplish near base; stamens 14–31 mm, tissue between anther sacs greenish; ovary greenish or rarely purplish
Chromosomes: n=5
Ecology: Common. Edges of redwood or mixed-evergreen forest, coastal scrub and chaparral, moist canyon slopes, ravine banks
Elevation: < 2000 m.
Bioregional distribution: Northwestern California, Cascade Range, n Sierra Nevada, San Francisco Bay Area
Distribution outside California: to Washington

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