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Vascular Plants of California
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Stillingia linearifolia


Higher Taxonomy
Family: EuphorbiaceaeView DescriptionDichotomous Key
Common Name: SPURGE FAMILY
Habit: Annual to shrub, tree [vine, cactus-like succulent]; monoecious or dioecious; sap clear or milky. Stem: generally branched [fleshy or spiny]. Leaf: generally simple, alternate to whorled, generally stipuled, sessile or petioled; blade entire, toothed, or lobed. Inflorescence: flowers solitary or in terminal or axillary cymes, racemes, spikes, or panicles, or (in Euphorbia) 1° inflorescence a compact, flower-like cyathium with much-reduced flowers enclosed within an involucre of fused bracts, cyathia terminal or axillary, 1 or in cyme-like arrays. Flower: unisexual, +- radial; sepals 0 or 2--6, free or fused; petals generally 0(5); stamens 1--many, free or filaments fused; ovary superior, chambers (1)3(4), styles free or fused, undivided, forked, or variously lobed. Fruit: generally capsule that splits into mericarps that then dehisce, releasing seeds. Seed: 1 per chamber; knob-like appendage sometimes present at attachment scar.
Genera In Family: 217 genera, 6000+ species: +- worldwide especially tropics; some cultivated (Aleurites, tung oil; Euphorbia species; Hevea, rubber; Ricinus). Toxicity: Many species +- highly TOXIC, due primarily to latex, especially if eaten or in contact with skin, eyes. Note: Eremocarpus moved to Croton, Tetracoccus moved to Picrodendraceae for TJM2; Chamaesyce moved to Euphorbia here (key to genera revised by Thomas J. Rosatti).
eFlora Treatment Author: Mark H. Mayfield & Grady L. Webster, except as noted
Scientific Editor: Bruce G. Baldwin.
Genus: StillingiaView DescriptionDichotomous Key


Habit: Annual, perennial herb, < 2 m; sap clear or milky; monoecious. Stem: erect. Leaf: alternate, entire or toothed; stipules minute, petioled; blade base generally with 2 glands. Inflorescence: spike, axillary or terminal; bracts glandular. Staminate Flower: calyx 2-lobed; stamens 2; nectary disk 0. Pistillate Flower: sepals 3, overlapping in bud, reduced, or 0; ovary 3-chambered, styles free, fused proximally, lobes 0. Fruit: generally 3-lobed, separating into 3 1-seeded segments; central axis persistent. Seed: pointed; scar not appendaged.
Species In Genus: 30 species: tropics, warm temperate. Etymology: (Benjamin Stillingfleet, British botanist, 1702--1771)
eFlora Treatment Author: Mark H. Mayfield & Grady L. Webster
Reference: Johnston & Warnock 1963 SW Naturalist 8:100--106
Stillingia linearifolia S. Watson
NATIVE
Habit: Perennial herb < 7 dm. Leaf: blade 1--4 cm, < 2 mm wide, linear, entire. Inflorescence: 2--7 cm, terminal; glands of pistillate bracts stalked, +- 1 mm. Pistillate Flower: 3--6 per inflorescence, well separated; styles +- 1 mm. Fruit: +- 3.5 mm. Seed: +- 2 mm, smooth.
Ecology: Dry slopes, washes; Elevation: < 1500 m. Bioregional Distribution: SnJV (Monocline Ridge, Fresno County), SW, D; Distribution Outside California: Arizona, Mexico. Flowering Time: Mar--May
Jepson eFlora Author: Mark H. Mayfield & Grady L. Webster
Reference: Johnston & Warnock 1963 SW Naturalist 8:100--106
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Botanical illustration including Stillingia linearifolia

botanical illustration including Stillingia linearifolia

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Citation for this treatment: Mark H. Mayfield & Grady L. Webster 2012, Stillingia linearifolia, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=45629, accessed on August 25, 2019.

Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on August 25, 2019.

Stillingia linearifolia
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© 2012 Neal Kramer
Stillingia linearifolia
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© 2012 Keir Morse
Stillingia linearifolia
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© 2012 Neal Kramer
Stillingia linearifolia
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© 2009 Aaron Schusteff
Stillingia linearifolia
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© 2010 Steve Matson
Stillingia linearifolia
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© 2010 Steve Matson

More photos of Stillingia linearifolia in CalPhotos



Geographic subdivisions for Stillingia linearifolia:
SnJV (Monocline Ridge, Fresno County), SW, D
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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, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time.