|University of California, Berkeley|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Cactaceae||View Description||Dichotomous Key|
|Genus:||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Habit: Generally erect (decumbent or prostrate), branched or not, branches 0--9(50). Stem: 5--30 cm, [1.8]3--7.5 cm diam, spheric to cylindric [or obconic], firm to soft, not regularly segmented; ribs 0, tubercles prominent, conic to cylindric, not grooved. Spines: 14--64(90) per areole, < 2 mm diam, needle-like [to hair-like or bristle-like], glabrous [or plumose], straight or hooked [or curved to crinkly]; central spines 1--4 [0--many] per areole, generally hooked. Flower: lateral, in axils of tubercles, 1--5 [7.5] cm diam; perianth cream to white, pink, purple, or lavender; ovary glabrous, spines 0, scales 0. Fruit: club-shaped or cylindric to ovoid [or barrel-shaped], indehiscent, generally red, spines 0. Seed: 0.8--1.5 mm, generally shiny, generally pitted or raised-netted, black [brown to +- red or +- yellow], occasionally with aril.
Species In Genus: 150 species: North America. Etymology: (Latin: nipple)
eFlora Treatment Author: Bruce D. Parfitt
Jepson Online Interchange
Key to MammillariaPrevious taxon: Grusonia pulchella
Next taxon: Mammillaria dioica
Citation for this treatment: Bruce D. Parfitt 2017. Mammillaria, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=10638, accessed on February 24, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 24, 2017.