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.



Annual, perennial herb, shrubs, generally bristly or sharply hairy
Stem prostrate to erect
Leaves cauline, often with basal rosette, generally simple, alternate; lower sometimes opposite, entire
Inflorescence: cyme, generally elongate, panicle-, raceme- or spike-like, coiled in flower, generally uncoiled in fruit or flowers 1–2 per axil
Flowers generally bisexual, generally radial; sepals 5, free or fused in lower half; corolla 5-lobed, generally salverform, top of tube generally appendaged, appendages 5, alternating with stamens, sometimes arching over tube; stamens 5, epipetalous; ovary superior, generally 4-lobed, style generally entire
Fruit: nutlets 1–4, smooth to variously roughened, sometimes prickly or bristled
Genera in family: ± 100 genera, ± 2000 species: tropical, temp, especially w North America, Medit; some cultivated (Borago, Echium, Myosotis, Symphytum ). Almost all genera may be TOXIC from alkaloids or accumulated nitrates
Recent taxonomic note: Recently treated to include Hydrophyllaceae [Olmsted et al. 2000 Mol Phylog Evol 16:96–112]
Family description, key to genera by Timothy C. Messick.



Dieter H. Wilken

Species in genus: 1 sp
Etymology: (Latin: rough, from hairs)


A. procumbens L.

Annual, bristly; hairs curved to reflexed, base bulbous
Stem prostrate to weakly decumbent, 3–8 dm, much-branched, angled
Leaves simple, ± cauline, opposite at base, alternate above, petioled to sessile above; blades 2–7 cm, oblanceolate to elliptic
Inflorescence axillary; flowers 1–2; pedicels reflexed in fruit
Flower: calyx 5-lobed, 2–3 mm in flower, compressed in fruit, 5–8 mm, 10–15 mm wide, papery, with 1–2 teeth per lobe, enclosing nutlets; corolla = calyx, purplish; stamens included, anthers sessile
Fruit: nutlets 2–4, 2–3 mm, compressed, ovoid in outline, shiny, minutely tubercled, scar lateral
Chromosomes: 2n=48
Ecology: Disturbed areas, roadsides, ditches
Elevation: 1000–1500 m.
Bioregional distribution: Modoc Plateau
Distribution outside California: widespread US; native to e&c Europe

previous taxon | next taxon
bioregional map for ASPERUGO%20procumbens 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 Asperugo procumbens
Retrieve dichotomous key for Asperugo
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