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Vascular Plants of California
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Dithyrea californica


Higher Taxonomy
Family: Brassicaceae (Cruciferae)View DescriptionDichotomous Key
Common Name: MUSTARD FAMILY
Habit: Annual to shrub; sap pungent, watery. Leaf: generally simple, alternate; generally both basal, cauline; stipules 0. Inflorescence: generally raceme, generally not bracted. Flower: bisexual, generally radial; sepals 4, generally free; petals (0)4, forming a cross, generally white or yellow to purple; stamens generally 6 (2 or 4), 4 long, 2 short (3 pairs of unequal length); ovary 1, superior, generally 2-chambered with septum connecting 2 parietal placentas; style 1, stigma entire or 2-lobed. Fruit: capsule, generally 2-valved, "silique" (length >= 3 × width) or "silicle" (length < 3 × width), dehiscent by 2 valves or indehiscent, cylindric or flat parallel or perpendicular to septum, segmented or not. Seed: 1--many, in 1 or 2 rows per chamber, winged or wingless; embryo strongly curved.
Genera In Family: +- 330 genera, 3780 species: worldwide, especially temperate. Note: Highest diversity in Mediterranean area, mountains of southwestern Asia, adjacent central Asia, western North America; some Brassica species are oil or vegetable crops; Arabidopsis thaliana used in experimental molecular biology; many species are ornamentals, weeds. Aurinia saxatilis (L.) Desvaux in cultivation only. Aubrieta occasional waif in central NCoR, Carrichtera annua (L.) DC. in SCo, Iberis sempervirens L., Iberis umbellata L. in PR, Teesdalia coronopifolia (Bergeret) Thell., Teesdalia nudicaulis (L.) W.T. Aiton in southern NCoRO, CCo. Cardaria, Coronopus moved to Lepidium; Caulostramina to Hesperidanthus; Guillenia to Caulanthus; Heterodraba to Athysanus; California taxa of Lesquerella to Physaria; Malcolmia africana to Strigosella.
eFlora Treatment Author: Ihsan A. Al-Shehbaz, except as noted
Scientific Editor: Douglas H. Goldman, Bruce G. Baldwin.
Genus: DithyreaView DescriptionDichotomous Key


Common Name: SPECTACLEPOD
Habit: Annual, perennial herb; hairs dense, stalked, stellate, occasionally simple. Leaf: basal rosetted, entire to dentate or pinnately lobed; cauline petioled or sessile, base not lobed. Inflorescence: elongated or not. Flower: sepals erect, forming a tube, linear to narrowly oblong, lateral pair base sac-like; petals tongue-shaped, long-clawed, white to lavender. Fruit: silicle, indehiscent, flattened perpendicular to septum, spectacle-shaped, splitting into 1-seeded halves, not segmented; valves keeled, enclosing seeds; stigma entire. Seed: 2, oblong, wing 0.
Etymology: (Greek: 2 shields, reference to spectacle-shaped fruit)
eFlora Treatment Author: Ihsan A. Al-Shehbaz
Reference: Rollins 1979 Publ Bussey Inst Harvard 3--32
Dithyrea californica Harv.
NATIVE
Habit: Plant densely hairy. Stem: several from base, branched distally, (0.7)1--6(7) dm. Leaf: basal 2--11 cm, oblanceolate to widely ovate, dentate to shallowly lobed; cauline similar, smaller, entire to dentate. Flower: sepals (6)7--9(10) mm; petals (1)1.2--1.5 cm, (1.5)2--3 mm wide, white to pale lavender. Fruit: style 0.1--0.5(1) mm; pedicel spreading, 1.5--2.5 mm. Seed: 2, 3--4 mm, oblong. Chromosomes: 2n=20.
Ecology: Abundant in sandy places, washes, scrub; Elevation: 50--1400 m. Bioregional Distribution: D; Distribution Outside California: Nevada, western Arizona, northwestern Mexico. Flowering Time: Mar--May
Jepson eFlora Author: Ihsan A. Al-Shehbaz
Reference: Rollins 1979 Publ Bussey Inst Harvard 3--32
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Citation for this treatment: Ihsan A. Al-Shehbaz 2012, Dithyrea californica, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=23180, accessed on July 20, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on July 20, 2024.

Dithyrea californica
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©2012 Neal Kramer
Dithyrea californica
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©2009 Thomas Stoughton
Dithyrea californica
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©2018 Aaron Schusteff
Dithyrea californica
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©2010 Thomas Stoughton
Dithyrea californica
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©2015 Keir Morse

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Geographic subdivisions for Dithyrea californica:
D
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(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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CCH collections by month Flowering-Fruiting Monthly Counts

Duplicates counted once; synonyms included.
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Blue line denotes eFlora flowering time (fruiting time in some monocot genera).