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    THIS PAGE IS NO LONGER UPDATED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.

CACTACEAE

CACTUS FAMILY

Edward F. Anderson (except Opuntia)

Perennial, shrub, tree, generally fleshy
Stem cylindric, spheric, or flat; surface smooth, tubercled, or ribbed (fluted); nodal areoles bear flowers, generally bear spines from center ("central spines") and margin ("radial spines") (Opuntia areoles bear small, barbed, deciduous bristles sometimes called glochids, generally also bear spines)
Leaf generally 0
Flower generally solitary, bisexual, sessile, ± radial; perianth parts generally many, grading from scale-like to petal-like; stamens many; ovary appearing inferior, ± submerged in stem, so generally with areoles on surface, style 1, stigma lobes generally many
Fruit generally fleshy, generally indehiscent, spiny, scaly, or smooth
Seeds many
Genera in family: 93 genera, ± 2000 species: especially Am deserts; many cultivated
Etymology: (Greek: thorny plant)
Reference: [Benson 1982 Cacti of US & Can; Hunt & Taylor eds 1990 Bradleya 8:85–107]

FEROCACTUS

BARREL CACTUS, VISNAGA


Stem generally 1, < 3 m, 20–35 cm diam, depressed-spheric to columnar; ribs 15–27; tubercles inconspicuous; spines dense
Flower 3–6 cm diam; tube poorly developed; ring of hairs separating perianth and stamens; ovary densely scaly
Fruit 1–2 cm diam, scaly, generally yellow, opening by a pore near base
Seed 1.5–3 mm, black, pitted; scar basal
Species in genus: 23 species: sw US, Mex
Etymology: (Latin: fierce cactus)
Reference: [Taylor 1984 Bradleya 2:19–38]

Native

F. cylindraceus (Engelm.) Orcutt

CALIFORNIA BARREL CACTUS


Stem 10–30 dm, generally taller than wide, spheric or columnar; ribs 18–27; spines 10–18, erect and spreading, longest recurved, generally with some red, becoming gray
Flower: perianth parts yellow with red base; ovary 9–12 mm, scales fringed, style 12–20 mm
Fruit yellow
Seed 1–3 mm
Chromosomes: 2n=22
Ecology: UNCOMMON. Gravelly, rocky, or sandy areas
Elevation: 60–1500 m.
Bioregional distribution: Desert (especially e Mojave Desert, w Sonoran Desert)
Distribution outside California: to Utah, Mexico
Synonyms: Echinocactus c. Engelm.; F. acanthodes (Lem.) Britton & Rose misapplied (rejected name)
Threatened by collecting; monitoring needed.

previous taxon | next taxon
bioregional map for FEROCACTUS%20cylindraceus being generated
 


Retrieve Jepson Interchange Index to Plant Names entry for Ferocactus cylindraceus
Retrieve dichotomous key for Ferocactus
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