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Vascular Plants of California
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Stillingia spinulosa


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.
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 spinulosa Torr.
NATIVE
Habit: Annual or perennial herb < 10 dm. Leaf: blade generally 2--4 cm, 5--12 mm wide, elliptic to ovate, sharply toothed. Inflorescence: 1--2 cm, axillary; glands of pistillate bracts stalked, +- 2 mm. Pistillate Flower: 1--2 per inflorescence, +- open; styles 3--3.5 mm. Fruit: 4--5 mm. Seed: 3--3.5 mm, striate, minutely roughened.
Ecology: Sandy soils, dunes, creosote-bush scrub; Elevation: < 900 m. Bioregional Distribution: D; Distribution Outside California: southern Nevada, Arizona. Flowering Time: Mar--May
Jepson eFlora Author: Mark H. Mayfield & Grady L. Webster
Reference: Johnston & Warnock 1963 SW Naturalist 8:100--106
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Botanical illustration including Stillingia spinulosabotanical illustration including Stillingia spinulosa


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Citation for this treatment: Mark H. Mayfield & Grady L. Webster 2012, Stillingia spinulosa, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=45631, accessed on November 08, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on November 08, 2024.

Stillingia spinulosa
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©2004 James M. Andre
Stillingia spinulosa
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©2012 Keir Morse
Stillingia spinulosa
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©2018 Neal Kramer
Stillingia spinulosa
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©2012 Keir Morse
Stillingia spinulosa
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©2010 Neal Kramer

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Geographic subdivisions for Stillingia spinulosa:
D
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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 occurrence).






 

Data provided by the participants of the  Consortium of California Herbaria.

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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.
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CCH collections by month Flowering-Fruiting Monthly Counts

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 (fruiting time in some monocot genera).