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.

ASTERACEAE

SUNFLOWER FAMILY

David J. Keil, Family Editor and author, except as specified

Annual to tree
Leaves basal or cauline, alternate to whorled, simple to compound
Inflorescence: 1° inflorescence a head, each resembling a flower, 1–many, generally arrayed in cymes, generally subtended by ± calyx-like involucre; flowers 1–many per head
Flowers bisexual, unisexual, or sterile, ± small, of several types; calyx 0 or modified into pappus of bristles, scales, or awns, which is generally persistent in fruit; corolla radial or bilateral (rarely 0), lobes generally (0)4–5; stamens 4–5, anthers generally fused into cylinder around style, often appendaged at tips, bases, or both, filaments generally free, generally attached to corolla near throat; pistil 1, ovary inferior, 1-chambered, 1-seeded, style 1, branches 2, generally hair-tufted at tip, stigmas 2, generally on inside of style branches
Fruit: achene, cylindric to ovoid, generally deciduous with pappus attached
Genera in family: ± 1300 genera, 21,000 species (largest family of dicots): worldwide. Largest family in CA. Also see tribal key to CA genera: Strother 1997 Madroño 44(1):1–28. See glossary p. 25 for illustrations of general family characteristics.

SOLIVA

Martin F. Ray

Annual, ± depressed, glabrous to densely hairy
Leaves pinnately lobed or compound; petiole bases wide, ± clasping
Inflorescence: heads disciform, sessile in basal and cauline axils; phyllaries in 1–2 series, green to scarious; receptacle flat, naked
Pistillate flowers: corollas 0; style 2-branched
Disk flowers staminate; corollas 4-lobed; ovary sterile
Fruit flattened, often winged, tipped by a sharp, persistent stylar spine; pappus 0
Species in genus: ± 5 species: South America
Etymology: (Dr. Salvador Soliva, 18th century physician to Spanish court)
Reference: [Cabrera 1949 Not Mus La Plata 14:123–139; Ray 1987 Madroño 34(3):228–239]

Introduced

S. sessilis Ruiz & Pav.

Plant prostrate (< 25 cm diam) to ascending (2–7 cm), softly short-hairy
Stems 1–many, often purple-spotted or dark-colored
Leaves pinnate; leaflets ± palmate, lobes 2–8, narrowly lanceolate
Inflorescence: phyllaries 5–12, 2–3 mm, widely ovate to lanceolate, acute
Pistillate flowers 10–12
Disk flowers 4–6; corollas 2–3 mm, green-translucent
Fruit 3.5–5.2 mm (including spine), ovate-lanceolate, with 0 or 2 teeth above, ± keeled, green to brown, often with tiny purple spots, glabrous to densely hairy, wingless and toothless to widely winged and long-toothed; wings sometimes notched in lower 1/3
Chromosomes: 2n=110–120
Ecology: Disturbed areas, especially hard-packed paths, roadsides, lawns,
Elevation: generally < 1500 m.
Bioregional distribution: Northwestern California, Sierra Nevada Foothills, Central Western California, Southwestern California, expected elsewhere
Distribution outside California: native to S.America
Synonyms: S. daucifolia Nutt.; S. pterosperma (Juss.) Less

previous taxon | next taxon
bioregional map for SOLIVA%20sessilis 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 Soliva sessilis
Retrieve dichotomous key for Soliva
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