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

    THIS PAGE IS NO LONGER UPDATED
    AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
  • Up-to-date information about California vascular plants is available from 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.

PULICARIA

G. Ledyard Stebbins

Annual to perennial herb
Leaves basal or some cauline, alternate
Inflorescence: heads radiate, 1–many; involucre ± hemispheric; phyllaries in 2–several series, narrowly membranous-margined; receptacle naked
Ray flowers many; ligules linear, yellow
Disk flowers many; corolla yellow; anther base appendages bristle-like; style branches ± club-like, spreading
Fruit subcylindric, 5-ribbed, short-hairy; outer pappus a short crown of ± fused scales, inner of barbed bristles
Etymology: (Latin: flea-like)
Reference: [Raven 1963 Aliso 5:251–253]

Introduced

P. paludosa Link

Plant 6–12 dm, from short rhizome, stiff, ± soft-hairy
Leaves 1–3(8) cm, linear to oblong, entire, often rolled under, ± clasping
Inflorescence: heads many; peduncles 1–3 cm; involucre 4–5 mm, 6–10 mm diam; phyllaries 2.7–4.8 mm, subequal in 2–3 series, narrowly linear
Ray flowers: corollas 3.5–4 mm, tube 1.5–2 mm, ligule 1.5–2 mm
Disk flowers: corollas 2.2–3 mm
Fruit ± 1 mm; outer pappus < 0.4 mm; inner pappus bristles 8–16, 2–3 mm
Chromosomes: 2n=18
Ecology: Uncommon. Damp sand
Elevation: < 700 m.
Bioregional distribution: w San Joaquin Valley, Southwestern California, eastern Sonoran Desert
Distribution outside California: native to Europe
Synonyms: P. hispanica (Boiss.) Boiss

previous taxon | next taxon
bioregional map for PULICARIA%20paludosa being generated
 


Retrieve Jepson Interchange Index to Plant Names entry for Pulicaria paludosa
Retrieve dichotomous key for Pulicaria
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


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