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Teesdalia coronopifolia

Higher Taxonomy
Family: Brassicaceae (Cruciferae)View DescriptionDichotomous Key

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: TeesdaliaView DescriptionDichotomous Key

Habit: Annual [perennial herb], scapose; hairs 0 or simple. Leaf: basal rosetted, petioled, entire or dissected; cauline 0 or few, sessile, base not lobed. Inflorescence: elongated. Flower: sepals ascending to spreading, base not sac-like; petals white, equal or not, not clawed; stamens 4 or 6, filaments with white basal appendage. Fruit: silicle, dehiscent, broadly cordate to round, flat perpendicular to septum, tip winged and shallowly notched, unsegmented; stigma entire. Seed: 2--4, in 1 row, wingless.
Species In Genus: 3 species: Europe. Etymology: (R. Teesdale, English botanist, horticulturist, 1740--1804)

Teesdalia coronopifolia (Bergeret) Thell.
Habit: Plant slender, glabrous or sparsely hairy. Stem: (0.6)1--2(2.8) dm, 1 to many from base, simple. Leaf: basal 0.5--3(4) cm, lanceolate in outline, pinnately lobed or divided (dentate or entire); cauline 0--3, linear, dentate or entire. Flower: sepals 0.2--0.6 mm; petals 0.5--1.5 mm, 0.3--0.6 mm wide, oblong. Fruit: 3--3.5 mm, 3--5 mm wide; pedicel spreading, 3--6 mm. Seed: 0.8--1.2 mm, ovate. Chromosomes: 2n=36.
Ecology: Uncommon. Wet, disturbed areas; Elevation: < 500 m. Bioregional Distribution: s NCoRO (Sonoma Co.); Distribution Outside California: native to Europe. Flowering Time: Feb--Apr
eFlora Treatment Author: Ihsan A. Al-Shehbaz
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Citation for this treatment: Ihsan A. Al-Shehbaz 2016. Teesdalia coronopifolia, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on October 26, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on October 26, 2016.

Geographic subdivisions for Teesdalia coronopifolia:
s NCoRO (Sonoma Co.);
Markers link to CCH specimen records. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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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Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.