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| Jepson eFlora: Taxon page
Key to families | Table of families and genera |
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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 | |
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Perennial, 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: Am (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]
Erect or ascending, branches generally 0.Key to Sclerocactus
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: sw US, Mex. (Greek: hard or cruel cactus)
Stem: 10–25 cm, ovoid to cylindric; ribs 17–21.
Spines: yellow or pink to ± red; central spines 3–4 cm; radial 9–10 per areole.
Flower: ± green-yellow, or pink to magenta.
Fruit: 7–15 mm, 3–5 mm diam; scales widely cordate, ciliate.
2n=22. Granitic slopes and plains, creosote-bush scrub; 500–1200 m. n Mojave Desert (Inyo Co.);
Previous taxon: Sclerocactus
Next taxon: Sclerocactus polyancistrus
Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
Copyright © 2012 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.
| Bioregions in which taxon occurs | Red area (if present) is the part of the bioregion lying between the upper and lower elevation limits of the taxon; 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. |
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Chart based on elevation range in Manual and elevations and coordinates of CCH records. Data provided by the participants of the Consortium of California Herbaria. Note: About half of the CCH records include both elevation and coordinates. | Map made in collaboration with Scott Loarie. Data provided by the participants of the Consortium of California Herbaria.
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