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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Elizabeth McClintock

Shrub, tree, generally dioecious
Stem often thorny; bark often bitter
Leaves generally alternate, simple, entire, or pinnately compound with subentire leaflets
Inflorescence: panicle, raceme, or flowers solitary
Flower inconspicuous; sepals generally 5, generally fused at base, generally erect; petals generally 5, free, generally spreading; stamens generally 10–15, generally inserted on a disk, filaments often with a basal scale; pistils generally 2–5, ovaries superior, 1-ovuled (if pistil 1, chambers generally 2–5, 1-ovuled), styles free or partly fused
Fruit: winged achene, drupe, berry, or capsule
Genera in family: ± 25 genera, ± 150 species: tropical, warm temp; some cultivated
Reference: [Brizicky 1962 J Arnold Arbor 43:173–186]
Bark, leaves used in medicine.


Shrub or small tree, appearing ± leafless, dioecious; thorns large, branched
Leaf simple, sometimes scale-like
Flower: calyx lobes 4–8; petals 4–8; stamens 8–24; ovaries 4–8, adherent near middle, style bases fused, tips spreading
Fruit: drupe, dry, 4–8 per flower, spreading
Species in genus: ± 15 species: sw & s-c US, to South America
Etymology: (René R.L. Castel, French botanist, poet, editor, opera librettist, 1759–1832)
Reference: [Moran & Felger 1968 Trans San Diego Soc Nat Hist 15:31–40]


C. emoryi (A. Gray) Moran & Felger


Plant generally < 1 m, intricately branched; young parts densely puberulent
Leaf scale-like, entire, ephemeral and rarely seen
Inflorescence: panicle, much-branched, 2.5–5 cm, stiff
Flower 6–8 mm diam
Fruit ± 6 mm, flat-topped; base ± rounded, sometimes persisting several years
Seed 1
Ecology: Dry, gravelly washes, slopes, plains
Elevation: ± 650 m.
Bioregional distribution: Desert
Distribution outside California: Arizona, nw Mexico
Flowering time: Jun–Jul
Synonyms: Holacantha e. A. Gray
Two other desert plants have same common name.
See the CNPS Inventory for information about endangerment and rarity.
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bioregional map for CASTELA%20emoryi 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 Castela emoryi
Retrieve dichotomous key for Castela
Overlay Consortium of California Herbaria specimen data by county on this map
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