Echinocereus viridiflorus subs. davisii cv. brevispinus

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Echinocereus viridiflorus subs. davisii cv. brevispinus hort.

Family: CACTACEAE

Echinocereus viridiflorus subs. davisii cv. brevispinus Photo by: Cactus Art

Origin and Habitat: Garden origin (Nursery produced cultivar)
The standard species comes from a single population that occurs in west Texas, (Brewster Co., Marathon)
Habitat: Grows in flat hills on a specific substrate (rich in quartz sand) in a semi-desert grassland at an elevation of 1,200 m Sometimes plants in drought periods shrink well below ground level.

Synonyms:

Echinocereus viridiflorus subs. davisii cv. brevispinus hort.

Echinocereus davisii f. brevispinus hort.

See all synonyms of Echinocereus viridiflorus

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Accepted name in llifle Database:
Echinocereus viridiflorus Engelm. in Wisliz.
Mem. Tour N. Mexico [Wislizenus] 91. 1848
Synonymy: 19

Echinocereus viridiflorus Engelm. in Wisliz.

Cereus viridiflorus (Engelm.) Engelm.

Echinocereus labouretii Förster ex Rümpler
Echinocereus viridiflorus var. centrispinus Vernon Bailey
Echinocereus viridiflorus var. elongatus* hort. ex Backeb.
Echinocereus viridiflorus var. faciliflorus Hildm. ex Schelle
Echinocereus viridiflorus var. intermedius Backeb.
Echinocereus viridiflorus var. longispinus Schelle
Echinocereus viridiflorus var. major
Echinocereus viridiflorus var. minor Engelm. ex D.Weniger

Cereus viridiflorus var. minor Engelm.

Echinocereus viridiflorus var. montanus hort.
Echinocereus viridiflorus var. robustior Kuenzler
Echinocereus viridiflorus var. ruberrimus Frič
Echinocereus viridiflorus var. rubrus Frič
Echinocereus viridiflorus var. sanguineus Regel ex Schelle
Echinocereus viridiflorus var. standleyi (Britton & Rose) Orcutt ex D.Weniger

Echinocereus standleyi Britton & Rose
Echinocereus viridiflorus f. standleyi (Britton & Rose) D.Parker

Accepted name in llifle Database:
Echinocereus viridiflorus subs. chloranthus (Engelm.) N.P.Taylor
Cactaceae Consensus Init. 3: 10. 1997
Synonymy: 10

Echinocereus viridiflorus subs. chloranthus (Engelm.) N.P.Taylor

Cereus chloranthus Engelm.
Echinocereus chloranthus (Engelm.) Engelm. ex Rümpler in Förster
Echinocereus viridiflorus var. chloranthus (Engelm.) Backeb.
Echinocereus viridiflorus f. chloranthus Krainz

Echinocereus milleri W.Blum, Kuenzler & Oldach
Echinocereus viridiflorus var. canus A.M.Powell & Weedin
Echinocereus viridiflorus var. neocapillus (D.Weniger) A.D.Zimmerman

Echinocereus chloranthus var. neocapillus D.Weniger
Echinocereus neocapillus (D.Weniger) W.Blum & Mich.Lange in W.Blum et al.

Accepted name in llifle Database:
Echinocereus viridiflorus subs. correllii (L.D.Benson) W.Blum & Mich.Lange in W.Blum et al.
Echinocereus Monogr. (preprint) [10] (1998)
Synonymy: 5

Echinocereus viridiflorus subs. correllii (L.D.Benson) W.Blum & Mich.Lange in W.Blum et al.

Echinocereus chloranthus subs. cylindricus f. corellii (L.D.Benson)
Echinocereus correllii Kuenzler
Echinocereus viridiflorus var. correllii L.D.Benson

Echinocereus carmenensis W.Blum, Mich.Lange & E.Scherer in W.Blum et al.

Accepted name in llifle Database:
Echinocereus viridiflorus subs. cylindricus (Engelm.) N.P.Taylor
Cactaceae Consensus Init. 3: 10. 1997
Synonymy: 8

Echinocereus viridiflorus subs. cylindricus (Engelm.) N.P.Taylor

Cereus viridiflorus var. cylindricus Engelm.
Cereus viridiflorus var. tubulosus J.M.Coult.
Echinocereus chloranthus subs. cylindricus (Engelm.) W.Blum & Mich.Lange in W.Blum et al.
Echinocereus chloranthus var. cylindricus (Engelm.) N.P.Taylor
Echinocereus strausianus Haage jr. in Quehl
Echinocereus viridiflorus var. cylindricus (Engelm.) Rümpler
Echinocereus viridiflorus var. tubulosus (J.M.Coult.) A.Heller

Accepted name in llifle Database:
Echinocereus viridiflorus subs. davisii (Houghton) N.P.Taylor
Cactaceae Consensus Init. 3: 10. 1997
Synonymy: 4

Echinocereus viridiflorus subs. davisii (Houghton) N.P.Taylor

Echinocereus davisii Houghton
Echinocereus viridiflorus var. davisii (Houghton) W.T.Marshall
Echinocereus viridiflorus f. davisii (Houghton) Krainz

Accepted name in llifle Database:
Echinocereus viridiflorus var. rhyolithensis W. Blume & Mich.Lange
Synonymy: 4

Echinocereus viridiflorus var. rhyolithensis W. Blume & Mich.Lange

Echinocereus chloranthus subs. rhyolithensis W.Blum & Mich.Lange in W.Blum et al.

Echinocereus viridiflorus cowperii n.n.

Echinocereus cowperii n.n.

Cultivars (1):

Echinocereus viridiflorus subs. davisii cv. brevispinus hort.

Echinocereus davisii f. brevispinus hort.

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Description: This is the rare and beautiful short spined form of E. davisii. This plant has an unique and unmistakable appearance and is considered by many among the nicest cactus cultivars.
The standard E. davisii is the tiniest Echinocereus species, plants are extremely diminutive and mostly subterranean (geophytes), usually do not offset.
Stem: Spherical stems with 6-9 ribs, dark green epidermis up to 1-2 cm in high and 1-3 cm in diameter (but cultivated specimens can grow bigger).
Spines: The areoles contain 8-14 spines, usually radial, pectinated, short but stout fang like, white whit a dark contrasting tip. 2-4 mm long.
Roots: Fibrous in young plant became tuberous in age.
Flowers: Yellow-green whit a green stigma and yellow pollen, up to 2 cm across, (buds acute, reddish and yellow-greenish).
Blooming season: Blossoming and fruiting occur on 3 to 4 year-old plants. Blooming period in cultivation is March-April.

Subspecies, varieties, forms and cultivars of plants belonging to the Echinocereus viridiflorus/russanthus complex

Echinocereus carmenensis W.Blum, Mich.Lange & E.Scherer in W.Blum et al.: has stocky body covered by tight yellowish pectinate spines and peculiar chocolate-scented flowers. Distribution: La Cuesta, passo Sierra del Carmem, Coahuila, Mexico.
Echinocereus milleri W.Blum, Kuenzler & Oldach: has the "hairy" seedlings of Echinocereus viridiflorus var. neocapillus, but has fewer spines it is also similar to the yellow spined Echinocereus viridiflorus subs. Correllii (which it obviously is not).
Echinocereus russanthus D.Weniger: has spheric to cylindrical stems, 8-30 tall and 4-8 cm Ø; ribs 10-20. Spines: Interlocking, bristly, typically reddish to brown, radiating in all directions. Distribution: Chihuahua (Mexico) and N-W Texas (USA).
Echinocereus russanthus f. cristata hort.: crested form.
Echinocereus russanthus subs. fiehnii (Trocha) W.Blum & Mich.Lange: Distribution: endemic to the Sierra del Nido, central Chihuahua, Mexico.
Echinocereus russanthus subs. weedinii Leuck ex W.Blum & Mich.Lange in W.Blum et al.
Echinocereus viridiflorus Engelm. in Wisliz.: ssp. viridiflorus (Typical form) With small stems and relatively pure yellow flowers, extends from central New Mexico and the Texas Panhandle to South Dakota.
Echinocereus viridiflorus var. canus A.M.Powell & Weedin: has hairy juvenile forms. Distribution: Solitario, Sandstone ridge above Righthand Shutup, Presidio Co., Texas, USA.
Echinocereus viridiflorus subs. chloranthus (Engelm.) N.P.Taylor: has 10-18 ribs, 5 or more central spines, giving the plants a bristly appearance, it is often considered a separate species (Echinocereus chloranthus). Distribution: W. Texas, S.E. New Mexico, and N. Mexico.
Echinocereus viridiflorus subs. correllii (L.D.Benson) W.Blum & Mich.Lange in W.Blum et al.: It is a poorly defined, yellow-spined population near Marathon, Texas.
Echinocereus viridiflorus cowperii n.n.: same as: Echinocereus viridiflorus var. rhyolithensis.
Echinocereus viridiflorus subs. cylindricus (Engelm.) N.P.Taylor: The common morphotype grows at middle altitudes in Texas and southeastern New Mexico, it has 0-2(-3) central spines.
Echinocereus viridiflorus subs. davisii (Houghton) N.P.Taylor: In the broad sense Echinocereus viridiflorus may prove paraphyletic with respect to Echinocereus davisii, but they are phenologically isolated, with Echinocereus davisii flowering earlier and thus appearing reproductively isolated in the wild.
Echinocereus viridiflorus subs. davisii cv. brevispinus hort.: has very short spines, usually radial, pectinated, stout, fang like, white whit a dark contrasting tip 2-4 mm long. Spine clusters looks like small starfishes.
Echinocereus viridiflorus var. montanus hort.: has significantly depressed stems solitary or in low clusters (mostly less than 2 cm tall). Distribution: Southwestern USA (Monarch Pass, Colorado?)
Echinocereus viridiflorus var. neocapillus (D.Weniger) A.D.Zimmerman: Remarkable for its softly hairy, not sharply spiny, seedlings.
Echinocereus viridiflorus var. rhyolithensis W. Blume & Mich.Lange: (Echinocereus russantus forma) Bristly red-spined plants from New Mexico.
Echinocereus viridiflorus var. robustior Kuenzler: It is a more robust form but not sufficiently differentiated and considered merely a local variant of Echinocereus viridiflorus var viridiflorus. Distribution New Mexico.

Bibliography: Major references and further lectures
1) Edward Anderson “The Cactus family” Timber Press, Incorporated, 2001
2) James Cullen, Sabina G. Knees, H. Suzanne Cubey "The European Garden Flora Flowering Plants: A Manual for the Identification of Plants Cultivated in Europe, Both Out-of-Doors and Under Glass" Cambridge University Press, 11/Aug/2011
3) David R Hunt; Nigel P Taylor; Graham Charles; International Cactaceae Systematics Group. "The New Cactus Lexicon" dh books, 2006
4) Brian Loflin, Shirley Loflin “Texas Cacti: A Field Guide” Texas A&M University Press, 26/ott/2009
5) Albert Michael Powell, James F. Weedin “Cacti of the Trans-Pecos and Adjacent Areas” Texas Tech University Press, 2004
6) Del Weniger “Cacti of the Southwest: Texas, New Mexico, Oklahoma, Arkansas, and Louisiana” University of Texas Press, 1969
7) Jackie M. Poole, William R. Sarr, Dana M. Price,& Jason R. Singhurst, “Rare Plants of Texas: A Field Guide” Texas A&M University Press, 2007