Jepson Flora Project: Jepson Interchange    

 
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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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]

ECHINOCEREUS

HEDGEHOG CACTUS


Stems 1–many, often densely clumped, each < 1 m, 2–10 cm diam, cylindric; ribs 5–13, prominent; tubercles ± indistinct; spines straight or curved
Flowers on old growth, often near upper margin of spine-bearing areoles; ovary spiny
Fruit spheric to ovoid, glabrous; spines deciduous
Seed ovoid to ± spheric, tubercled, generally black
Species in genus: 47 species: sw US, Mex
Etymology: (Greek: hedgehog candle)
Reference: [Taylor 1985 Genus Echinocereus]

Native

E. triglochidiatus Engelm.

Plant generally forming dense mounds
Stems 1–500, 5–40 cm, 5–15 cm diam, ± spheric to cylindric, light- to bluish green; ribs 5–12; tubercles ± obvious; areole wool persistent; spines highly variable, ± angled, generally gray, those < 1 year old puberulent near tip; central spines 1–6, difficult to distinguish from radial spines
Flower < 9 cm, funnel-shaped; perianth orange to red, inner parts round or evenly notched
Fruit 20–25 mm, 10–15 mm diam, pink to red; spines deciduous
Chromosomes: 2n=22
Ecology: Many habitats
Elevation: 150–3000 m.
Bioregional distribution: White and Inyo Mountains, Desert
Distribution outside California: to Rocky Mtns, Texas, Mexico
Flowering time: Apr–Jun
Synonyms: E. mojavensis (Engelm. & J.M. Bigelow) Ruempler
Highly variable; sometimes divided into vars., but not satisfactorily. More study needed
Horticultural information: DRN, DRY: 2, 3, 10, 11, 14, 18, 19, 20, 21, 22, 23.

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bioregional map for ECHINOCEREUS%20triglochidiatus being generated
 
YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).

Retrieve Jepson Interchange Index to Plant Names entry for Echinocereus triglochidiatus
Retrieve dichotomous key for Echinocereus
Overlay Consortium of California Herbaria specimen data by county on this map
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