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. chloropetalum (Torr.) Howell


Stem 2–7 dm
Leaf sessile, 7–21 cm, rounded to obtuse, generally ± brown-spotted
Flower generally with a sweet rose-like or ± spicy scent; sepals 3–7 cm, lanceolate; petals 5–11 cm, linear-oblanceolate to obovate, yellow to dark purple (sometimes white); stamens 15–35 mm, tissue between anther sacs purple; ovary purple
Chromosomes: n=5
Ecology: Edges of redwood forests and chaparral, generally on moist slopes and canyon banks in alluvial soils
Elevation: 100–2000 m.
Bioregional distribution: Inner North Coast Ranges, San Francisco Bay Area
Synonyms: var. giganteum (Hook. & Arn.) Munz
Highly variable; a population may contain all color variants.

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