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Tetracoccus dioicus
PARRY'S TETRACOCCUS

Higher Taxonomy
Family: PicrodendraceaeView Description 

Common Name: BITTER-TREE FAMILY
Habit: Shrub [tree]; dioecious [monoecious]. Stem: generally branched. Leaf: simple [palmate-compound], alternate, opposite, or whorled in 3s; entire or toothed; stipules 0 [present]. Inflorescence: generally axillary [subterminal, terminal]. Staminate Flower: +- radial; sepals [3]4--10[12], free [fused], overlapped; petals 0; nectary disk present [0]; stamens [2]5--10[55], filaments free [fused]. Pistillate Flower: +- radial; sepals [3]4--13, free; petals 0; nectary disk present [0]; ovary superior, compound, placentas axile, ovules generally 2 per chamber, styles free [fused]. Fruit: capsule.
Genera In Family: 24 genera, 80 species: tropics, especially southern hemisphere. Note: Incl in (non-monophyletic) Euphorbiaceae in TJM (1993).
eFlora Treatment Author: Bruce G. Baldwin, family description
Scientific Editor: Thomas J. Rosatti.
Genus: TetracoccusView DescriptionDichotomous Key

Habit: Plant generally 0.5--2 m; sap clear. Stem: axis erect; branches generally many, spreading to erect; twigs generally +- red, turning gray, generally hairy, glabrous in age; young lateral twigs short, sometimes becoming spine-like. Leaf: cauline, generally clustered at short, lateral branch tips; petiole < 2 mm; blade leathery, base obtuse to acute. Staminate Inflorescence: cyme, raceme, or panicle, occasionally clustered on short, lateral twigs, minute-bracted. Pistillate Inflorescence: flower 1. Staminate Flower: sepals 0.5--2 mm; filaments glabrous or hairy; nectary disk +- minute-lobed. Pistillate Flower: sepals 2--5 mm; nectary disk minute-lobed; ovary (2)3--5-chambered, style = chamber in number, free, +- flat, generally spreading. Fruit: +- spheric, generally lobed, glabrous or short-hairy, generally brown. Seed: smooth, shiny.
Species In Genus: 5 species: California, Arizona, Mexico. Etymology: (Latin: 4 seeds, from 4-lobed ovary in Tetracoccus dioicus)
eFlora Treatment Author: Grady L. Webster

Tetracoccus dioicus Parry
NATIVE
Stem: twigs sparsely fine-tomentose near axils, glabrous in age. Leaf: generally opposite or 3-whorled; blade 10--30 mm, linear to narrow-oblanceolate, entire or sparsely fine-toothed, margin sometimes inrolled, tip rounded to acute. Staminate Inflorescence: generally raceme; pedicel 3--10 mm. Pistillate Inflorescence: pedicel 6--15 mm. Staminate Flower: sepals 6--10, ovate to lanceolate; stamens 5--10, filaments 2.5--4 mm, base soft-hairy. Pistillate Flower: sepals 7--13, 3--5 mm, wide-lanceolate to ovate; ovary 4-lobed, fine-tomentose, chambers 4(5), styles 3--3.5 mm. Fruit: +- 6 mm, 7--9 mm wide, sparsely fine-tomentose.
Ecology: Dry slopes, chaparral; Elevation: < 1000 m. Bioregional Distribution: s SCo (San Diego Co.), w PR; Distribution Outside California: Baja California. Flowering Time: Apr--May
eFlora Treatment Author: Grady L. Webster
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory

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Citation for this treatment: Grady L. Webster 2016. Tetracoccus dioicus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=46211, accessed on February 11, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 11, 2016.


Tetracoccus dioicus
click for enlargement
© 2012 Keir Morse
Tetracoccus dioicus
click for enlargement
© 2012 Keir Morse
Tetracoccus dioicus
click for enlargement
© 2012 Keir Morse
Tetracoccus dioicus
click for enlargement
© 2012 Keir Morse
Tetracoccus dioicus
click for enlargement
© 2012 Keir Morse
Tetracoccus dioicus
click for enlargement
© 2012 Keir Morse

More photos of Tetracoccus dioicus in CalPhotos


Geographic subdivisions for Tetracoccus dioicus:
s SCo (San Diego Co.), w PR;
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.
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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.