Jepson Flora Project: Jepson Interchange    

link to manual TREATMENT FROM THE JEPSON MANUAL (1993) previous taxon | next taxon
Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora.



James R. Shevock

Stem generally glabrous; twigs or branchlets generally thorny
Leaves generally deciduous, simple, small, generally alternate, entire; stipules minute or 0
Inflorescence: flowers solitary
Flower generally bisexual, radial; hypanthium short, mostly forming thick nectary-disk; sepals generally 5(3–6), free; petals ephemeral, generally 5(3–6), free, generally white; stamens 4–50, attached to nectary-disk; pistils 1–9, simple, styles short, stigma head-like, ovules generally 2–many
Fruit: follicles 1–9
Seeds brown to black, with an aril
Genera in family: 3 genera, 8 species: w US, Mex (Apacheria of AZ, NM has 1 sp.)
Reference: [Thorne & Scogin 1978 Aliso 9:171–178]


Leaves deciduous (or dry during dormant periods), generally ± narrowly elliptic; petiole 0–short
Inflorescence: peduncle sometimes bracted
Flower: petals 9–15 mm, rounded or oblong, generally white; stamens 15–50 in several series
Fruit: follicles 8–20 mm, cylindric
Seeds generally > 2 per follicle, black, shiny, round to flat; aril conspicuous, fringed, yellowish
Species in genus: 2 species: s CA, e to AZ, s to Mex
Etymology: (Greek: fringe body, from aril)

previous taxon | next taxon
bioregional map for CROSSOSOMA 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 Crossosoma
Retrieve dichotomous key for Crossosoma
Overlay Consortium of California Herbaria specimen data by county on this map
Show other taxa with the same California distribution | Read about bioregions | Get lists of plants in a bioregion
Return to the Jepson Interchange main page
Return to treatment index page
  • This page is no longer being maintained.

University & Jepson Herbaria Home Page |
General Information | University Herbarium | Jepson Herbarium |
Visiting the Herbaria | On-line Resources | Research |
Education | Related Sites
Copyright © by the Regents of the University of California