Jepson eFlora: Taxon page
Vascular Plants of California
Key to families | Table of families and genera
Previous taxon Index to 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 |
Next taxon


Ferocactus viridescens
SAN DIEGO BARREL CACTUS


Higher Taxonomy
Family: CactaceaeView DescriptionDichotomous Key
Common Name: CACTUS FAMILY
Habit: 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.
Genera In Family: +- 125 genera, +- 1800 species: America (especially deserts), Africa; many cultivated, some edible. Note: 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.
eFlora Treatment Author: Bruce D. Parfitt, except as noted
Scientific Editor: Bruce D. Parfitt, Douglas H. Goldman, Bruce G. Baldwin, Thomas J. Rosatti.
Genus: FerocactusView DescriptionDichotomous Key


Common Name: BARREL CACTUS
Habit: Erect or leaning, branches 0, occasionally branched from tip-injury. Stem: (0)10--200(300) cm, 10--35 cm diam, depressed-spheric to short-columnar, hard, glabrous, not segmented; ribs 13--31, prominent; tubercles not conspicuous on ribs. Spines: [6]10--32 per areole, 2--4.5 mm wide, generally awl-shaped, generally flat, ringed with conspicuous ridges, straight to curved or +- hooked, some bristle-like; central spines generally 4 per areole. Flower: +- terminal, near distal edge of spine cluster, 3--6 cm diam; perianth yellow to red [or purple, or white with +- purple midstripes]; ovary glabrous, spines 0, scales numerous, generally rounded, margins minutely fringed or toothed. Fruit: spheric, ovoid, or cylindric, glabrous, spineless, dehiscent by basal pore. Seed: [1]1.5--3 mm, spheric to subreniform, pitted, black.
Species In Genus: 25 species: southwestern United States, Mexico. Etymology: (Latin: fierce cactus)
eFlora Treatment Author: Bruce D. Parfitt
Reference: Taylor 1984 Bradleya 2:19--38
Ferocactus viridescens (Torr. & A. Gray) Britton & Rose
NATIVE
Stem: generally not taller than wide, depressed-spheric to cylindric. Spines: 10--24, generally spreading, longest straight or +- curved, red, pink or +- yellow, +- gray or yellow in age. Flower: inner perianth occasionally with red-brown midstripes; style 6--9 mm, ovary 5--7 mm, scales fringed-dentate. Fruit: yellow (to +- red). Seed: 1.5--2 mm. Chromosomes: 2n=22.
Ecology: Sandy to rocky areas; Elevation: 10--150 m. Bioregional Distribution: SCo (San Diego Co.); Distribution Outside California: Baja California. Flowering Time: May--Jun Note: Threatened by urbanization, off-road vehicles, collecting.
Synonyms: Ferocactus viridescens var. viridescens
Jepson eFlora Author: Bruce D. Parfitt
Reference: Taylor 1984 Bradleya 2:19--38
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory

Previous taxon: Ferocactus cylindraceus
Next taxon: Grusonia

Name Search

Botanical illustration including Ferocactus viridescens

botanical illustration including Ferocactus viridescens

Contact/Feedback

Citation for this treatment: Bruce D. Parfitt 2012, Ferocactus viridescens, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=25772, accessed on October 20, 2019.

Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on October 20, 2019.

Ferocactus viridescens
click for enlargement
© 2014 Barry Rice
Ferocactus viridescens
click for enlargement
© 2017 Keir Morse
Ferocactus viridescens
click for enlargement
© 2013 Keir Morse
Ferocactus viridescens
click for enlargement
© 2013 Keir Morse
Ferocactus viridescens
click for enlargement
© 2014 Barry Rice
Ferocactus viridescens
click for enlargement
© 2013 Keir Morse

More photos of Ferocactus viridescens in CalPhotos



Geographic subdivisions for Ferocactus viridescens:
SCo (San Diego Co.)
MAP CONTROLS
1. You can change the display of the base map and layers by clicking on the layer control box in the upper right-hand corner.
2. California county polygons can be turned off and on in the layer control box.
3. Filling of Jepson subdivision polygons can be turned off and on in the layer control box.
4. Moving the cursor over any numbered cluster will show the range boundary of the included specimens (with a blue polygon).
5. Marker clustering can be turned off by clicking this link:      Marker Clustering OFF
WARNING: Turning this off might cause maps with large numbers of specimens to load slowly.
map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).





 

View elevation by latitude chart


Data provided by the participants of the  Consortium of California Herbaria.
MAP LEGEND
View all CCH records
All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
READ ABOUT YELLOW FLAGS


CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time.