Directory       News       Site Map       Home
         
    Jepson eFlora: Taxon page
Key to families | Table of families and genera

Previous taxon Indexes to all accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Previous taxon

CACTACEAE CACTUS FAMILY

Bruce D. Parfitt, except as noted

Perennial herb, shrub, tree, generally fleshy. Stem: cylindric to spheric, or flat; surface smooth, tubercled, or ribbed (grooved); nodal areoles bearing flowers. Leaf: generally 0 or early-deciduous, flat to ± cylindric. Spines: areoles generally with central, radial spines, occasionally with glochids. Flower: generally 1 per areole, bisexual [unisexual], sessile, radial [bilateral]; perianth parts generally many [5], scale-like to petal-like; stamens many; ovary inferior [superior], style 1, stigma lobes generally several [many]. Fruit: dry to fleshy or juicy, indehiscent to variously dehiscent, spiny, scaly, or naked; tubercled or smooth. Seed: generally many, occasionally 0–few.
± 125 genera, ± 1800 species: America (especially deserts), Africa; many cultivated, some edible. [Parfitt & Gibson 2004 FNANM 4:92–257] Spines smaller, fewer (0) in shade forms; yellow spines blacken in age. Introduced species increasingly escape cultivation. Hybridization common in some genera. Taxa of Escobaria in TJM (1993) moved to Coryphantha. —Scientific Editors: Bruce D. Parfitt, Douglas H. Goldman, Bruce G. Baldwin.
Unabridged references: [Hunt 2006 The New Cactus Lexicon, DH Books, Milborne Port, England]

Key to Cactaceae

SCLEROCACTUS PINEAPPLE CACTUS

J. Mark Porter & Edward F. Anderson

Erect or ascending, branches generally 0. Stem: 5–20 cm, 2–12 cm diam, ovoid to cylindric, not segmented, firm; ribs 8–21, prominent; tubercles distinct along ribs. Spines: [2]10–24 per areole, 0.3–2.1 mm diam, needle-like or awl-shaped, straight to curved or hooked; central spines 1–11 per areole. Flower: ± terminal, from upper edge of spine cluster, 25–75 mm diam; perianth ± green-yellow to magenta; ovary glabrous, spineless, scales sparse, rounded, ciliate at least near tip. Fruit: dehiscent by 2–4 short longitudinal slits, cylindric to ± spheric, spines 0. Seed: 2–3.7 mm, reniform, tubercled, glossy or shiny, black.
± 25 species: southwestern United States, Mexico. (Greek: hard or cruel cactus)

Key to Sclerocactus

S. polyancistrus (Engelm. & J.M. Bigelow) Britton & Rose MOJAVE FISHHOOK CACTUS
NATIVE
Stem: 10–45 cm, cylindric; ribs 13–17. Spines: white, red, or dark ± red-brown; central spines of 2 kinds, hooked central spines 5–10 cm, red-brown, distal-most central spines 3.7–8.6(13) cm; radial spines 10–15 per areole, 2–5 cm, 0.3–0.5 mm wide at base, white, flat. Flower: rose-purple to magenta. Fruit: 20–30 mm, 15–20 mm diam; scales narrow, ciliate near tip.
Limestone areas, hills and canyons, alluvial slopes; creosote-bush scrub, Joshua-tree woodland; 750–2100 m. White and Inyo Mountains, Mojave Desert; Nevada. Apr–Jun [Online Interchange] {CNPS list}
Unabridged synonyms: [Echinocactus polyancistrus Engelm. & J.M. Bigelow]

Previous taxon: Sclerocactus johnsonii
Next taxon: Campanulaceae

Contact/Feedback

Name search

Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Jul 31 2014
Citation for this treatment: [Author of taxon treatment] 2013. Sclerocactus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=43809, accessed on Jul 31 2014

Copyright © 2014 Regents of the University of California
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.


click for enlargement Sclerocactus polyancistrus
See CalPhotos for additional images
2006 Trent M. Draper

Bioregions in which Sclerocactus polyancistrus occurs Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
READ ABOUT YELLOW FLAGS
map of distribution 1
View elevation by latitude chart Data provided by the participants of the Consortium of California Herbaria.
View all CCH records

 

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.