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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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.


Species in genus: 1 sp
Etymology: (Greek: tooth mouth, from staminodes)


O. hartwegii Torr.

Perennial; corm 2.5–3 cm, ovoid, deep
Stem ± scapose, 12–50 cm, ± curved, generally branched
Leaves mostly basal, 10–30 cm, linear, sheathing; upper reduced
Inflorescence: panicle or raceme; bracts 3–10 mm, linear, scarious; pedicels 3–30 mm, with scarious bractlet above middle
Flower: perianth parts 6, fused below, petal-like, white to yellowish; tube 4–5 mm, strongly veined; lobes ± = tube, spreading (becoming reflexed), 3–5-veined; stamens 6, attached to perianth, filaments 1–2 mm, alternate 6 staminodes 0.5–1 mm, anthers dehiscing by pores at tip; ovary superior, chambers 3, style 4–5 mm, thread-like, stigma slightly 3-lobed
Fruit: capsule, loculicidal
Seed obovoid, brown
Chromosomes: n=10
Ecology: Clay, often serpentine soils
Elevation: < 600 m.
Bioregional distribution: Inner North Coast Ranges, n&c Sierra Nevada Foothills
Horticultural information: SUN, IRR until flowers. open, then DRY: 7, 8, 9, 14, 15, 16, 17.

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bioregional map for ODONTOSTOMUM%20hartwegii being generated
YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).

Retrieve Jepson Interchange Index to Plant Names entry for Odontostomum hartwegii
Retrieve dichotomous key for Odontostomum
Overlay Consortium of California Herbaria specimen data by county on this map
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