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Ziziphus obtusifolia var. canescens

Higher Taxonomy
Family: RhamnaceaeView DescriptionDichotomous Key

Habit: [Perennial herb] shrub, tree, generally erect, often thorny. Leaf: simple, generally alternate, often clustered on short-shoots; stipules generally present, occasionally modified into spines; generally petioled; blade pinnate-veined or 1--5-ribbed from base. Inflorescence: cyme, panicle, umbel, or flowers 1 or clustered in axils or on short-shoots. Flower: generally bisexual, radial; hypanthium subtending, surrounding, or partly fused to ovary; sepals 4--5; petals 0, 4--5, generally clawed; stamens 0, 4--5, alternate sepals, attached to hypanthium top, each generally fitting into a petal concavity; disk (0 or) between stamens, ovary, thin to fleshy, entire or lobed, free from ovary, adherent or fused to hypanthium; ovary superior or +- inferior, chambers [1]2--4, 1--2-ovuled, style 1, stigma entire or 2--3-lobed. Fruit: capsule, drupe.
Genera In Family: 50--52 genera, 950 species: especially tropics, subtropics some cultivated (Ceanothus; Frangula; Rhamnus; Ziziphus).
eFlora Treatment Author: John O. Sawyer, Jr., except as noted
Scientific Editor: Steve Boyd, Thomas J. Rosatti.
Genus: ZiziphusView DescriptionDichotomous Key

Habit: Tree, shrub [vine]. Stem: branches alternate, flexible or stiff, +- 2--3-ranked; twigs +- pendent, zigzag. Leaf: clustered on short-shoots or not, deciduous or not, petioled; stipules +- spine-like or not, unequal; blade elliptic to obovate, +- entire to serrate, 1--5-ribbed from base. Inflorescence: cyme or small panicle. Flower: hypanthium surrounding base of ovary; sepals 5; petals 5, < to > sepals; stamens 5; disk thick, +- obscuring ovary in early flower; ovary widely attached at base, chambers 2, each 1-ovuled, stigma 2-lobed. Fruit: drupe, stone 1.
Species In Genus: 100 species: generally tropics. Etymology: (Latin: from Arabic "zizouf," common jujube, Ziziphus zizyphus)
eFlora Treatment Author: John O. Sawyer, Jr.

Ziziphus obtusifolia (Hook. ex Torr. & A. Gray) A. Gray var. canescens (A. Gray) M.C. Johnst.
Habit: Shrub, < 3 m. Stem: bark gray, smooth; twigs 1--8 cm, stiff, spreading, thorn-tipped, densely short-white-hairy. Leaf: deciduous; stipules brown; blade 2--20 mm, ovate or oblong, firm, dull gray, margin entire or teeth 2--10, glandular. Inflorescence: 2--30-flowered. Flower: hypanthium 1.5--2 mm wide, olive-green, glabrous to tomentose; sepals +- yellow to +- orange or +- purple; petals white; pistil olive-green. Fruit: fleshy, 7--10 mm, not beaked, blue-black.
Ecology: Uncommon. Desert scrub; Elevation: 45--1250 m. Bioregional Distribution: D; Distribution Outside California: Arizona, Nevada, Utah, Mexico. Flowering Time: Apr--Jun Note: 1 other var., in New Mexico, Oklahoma, Texas, Mexico.
Unabridged Synonyms: Condalia lycioides var. canescens (A. Gray) Trel.
Unabridged Note: Ziziphus obtusifolia var. obtusifolia in New Mexico, Oklahoma, Texas, Mexico.=
eFlora Treatment Author: John O. Sawyer, Jr.
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botanical illustration including Ziziphus obtusifolia var. canescens


Citation for this treatment: John O. Sawyer, Jr. 2017. Ziziphus obtusifolia var. canescens, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on June 22, 2017.

Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora,, accessed on June 22, 2017.

Ziziphus obtusifolia var. canescens
click for enlargement
© 2014 Keir Morse
Ziziphus obtusifolia var. canescens
click for enlargement
© 2014 Keir Morse
Ziziphus obtusifolia var. canescens
click for enlargement
© 2012 James M. Andre
Ziziphus obtusifolia var. canescens
click for enlargement
© 2012 Neal Kramer
Ziziphus obtusifolia var. canescens
click for enlargement
© 2014 Keir Morse
Ziziphus obtusifolia var. canescens
click for enlargement
© 2014 Keir Morse

More photos of Ziziphus obtusifolia var. canescens in CalPhotos

Geographic subdivisions for Ziziphus obtusifolia var. canescens:
Markers link to CCH specimen records. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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.
View all CCH records

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.