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Tetragonia tetragonoides

Higher Taxonomy
Family: AizoaceaeView DescriptionDichotomous Key

Habit: Annual, perennial herb, shrub, generally fleshy. Stem: underground to erect; root fibrous or tuberous. Leaf: generally simple, entire, flat, cylindric, 3-angled, or scale-like, generally cauline, generally opposite; stipules generally 0; blade papillate, pubescent, or generally glabrous, often glaucous. Inflorescence: cyme or 1-flowered, generally terminal. Flower: generally bisexual, radial; hypanthium present; sepals (3)5(8), often unequal; petals 0 or many in several whorls, free or fused at base, linear; stamens 1--many, free or fused in groups, outer often petal-like; nectary a ring or separate glands; pistil 1, ovary superior to inferior, chambers 1--20, placentas generally parietal, styles 0--20. Fruit: berry, nut, or generally capsule, opening by flaps or circumscissile. Seed: 1--many per chamber, generally ovoid, arilled or not.
Genera In Family: 130 genera, 2500 species: generally subtropics, especially southern Africa; many cultivated. Note: Galenia pubescens (Eckl. & Zeyh.) Druce, a waif, may be naturalizing in southern California.
Unabridged Note: Disphyma crassifolium (L.) L. Bolus (ovary glands convex, minute-crenate; stigmas dense-plumose; fruit chambers 5; seeds ovate, +- smooth), of tribe Ruschieae, an historical waif in California; Lampranthus coccineus (Haw.) N.E. Br.: (ovary glands fused; fruit chambers 5; seeds pear-shaped, +- black, rough), of Ruschieae, an historical waif or urban weed in California.
eFlora Treatment Author: Nancy J. Vivrette, John Bleck & Wayne R. Ferren, Jr., family description, key to genera
Scientific Editor: Bruce G. Baldwin, Thomas J. Rosatti.
Genus: TetragoniaView Description 

Habit: Annual [perennial herb, subshrub]; +- papillate. Stem: prostrate. Leaf: alternate or sometimes basal opposite. Inflorescence: flowers 1 or 2--3 in cluster, axillary, +- sessile. Flower: sepals 3--5; petals 0; stamens 1--many; ovary inferior, chambers 3--9, ovule 1, styles 3--9. Fruit: nut-like, 8--10 mm diam, angled, with 2--5 horns. Seed: +- pear-shaped [reniform].
Species In Genus: 50 species: southern hemisphere. Etymology: (Greek: four-angled)
eFlora Treatment Author: Nancy J. Vivrette

Tetragonia tetragonoides (Pall.) Kuntze
Habit: Papillae widely spaced, large, crystalline. Stem: many, spreading, 3+ dm. Leaf: 2--5(10) cm; petiole winged, 1--3 cm; blade triangular-ovate, base truncate, margin entire, +- wavy. Flower: generally bisexual, self-fertile, 5 mm; sepals 4--5, spreading, +- yellow. Seed: pear-shaped, brown. Chromosomes: 2n=32.
Ecology: Common. Sand dunes, bluffs, margins of coastal wetlands; Elevation: < 100 m. Bioregional Distribution: NCo, CCo, SCo; Distribution Outside California: native to southern hemisphere. Flowering Time: Apr--Sep
Synonyms: Demidovia tetragonoides Pall.; Tetragonia expansa Murray
eFlora Treatment Author: Nancy J. Vivrette
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Citation for this treatment: Nancy J. Vivrette 2016. Tetragonia tetragonoides, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on April 29, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on April 29, 2016.

Geographic subdivisions for Tetragonia tetragonoides:
NCo, CCo, SCo;
Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

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