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.

BORAGINACEAE

BORAGE FAMILY

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.

PLAGIOBOTHRYS

POPCORNFLOWER

Timothy C. Messick

Annual, perennial herb, generally strigose
Stem prostrate to erect, branched at base or above, < 5 dm
Leaves simple, 0.5–10 cm, generally smaller upward; all cauline (lower opposite, linear to oblong, upper generally alternate) or both basal (often in rosettes) and cauline (alternate, linear to oblanceolate)
Inflorescence: raceme or spike, coiled in bud, generally elongate in fruit; bracts 0–many; pedicels generally 0–1 mm
Flower bisexual; sepals fused below middle, 2–10 mm in fruit; corolla 1–12 mm wide, all white or yellow inside tube
Fruit: nutlets generally 4, 1–3.5 mm; back generally with midrib, lateral ribs, cross-ribs, interspaces, generally tubercled, sometimes prickled or bristled; scar generally lateral (on side) near middle or base, sometimes basal (on bottom) or oblique (between side and bottom), sometimes on a stalk or short peg, generally ovate to triangular
Species in genus: ± 65 species: temp w North America, w South America
Etymology: (Greek: sideways pit, from position of nutlet attachment scar)
Reference: [Higgins 1974 Great Basin Natur 34(2):161–166; Johnson 1932 Contr Arnold Abroretum 3:1–102]
Fully mature nutlets critical for identification; intergradation common in some species groups; sect. Allocarya often treated as a separate genus; many species need further study.

Native

P. acanthocarpus (Piper) I.M. Johnst.

ADOBE ALLOCARYA

Annual, strigose
Stem spreading to erect, 1–4 dm
Leaves cauline; lower 2–6 cm
Inflorescence bracted throughout; pedicels 1–2 mm
Flower: calyx 3–6 mm; corolla 1–2.5 mm wide
Fruit: nutlet 1.5–2.5 mm, ovoid; cross-ribs generally narrow; prickles generally all over back, slender, long, rarely ± 0; bristles ± sparse, generally on prickles only; scar lateral near base, ovate to triangular, concave
Ecology: Vernal pools, moist clay soil
Elevation: < 700 m.
Bioregional distribution: s Sacramento Valley, San Joaquin Valley, San Francisco Bay Area, South Coast (mesas near San Diego)
Distribution outside California: Mexico
May intergrade with P. greenei.

previous taxon | next taxon
bioregional map for PLAGIOBOTHRYS%20acanthocarpus being generated
 
N.B. The distribution depicted here differs from that given in The Jepson Manual (1993)
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 Plagiobothrys acanthocarpus
Retrieve dichotomous key for Plagiobothrys
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
Glossary
    FEEDBACK
  • 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