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Sibaropsis hammittii

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: SibaropsisView Description 

Species In Genus: 1 sp.: California. Etymology: (Greek: like Sibara)
eFlora Treatment Author: Ihsan A. Al-Shehbaz
Reference: Boyd & Ross 1997 Madroño 44:29--47

Sibaropsis hammittii S. Boyd & T.S. Ross
Habit: Annual, glabrous or sparsely simple-hairy, glaucous. Stem: 0.5--2 dm, erect, simple or branched near base. Leaf: cauline (1)1.5--3(4.5) cm, 0.5--1 mm wide, linear, entire, sessile, base not lobed. Inflorescence: elongated. Flower: sepals erect, 2.8--3.2 mm, base only +- sac-like; petals 8.5--10 mm, 2--2.5 mm wide, spoon-shaped, unequal, purple to pink, darker-veined, claw 5--6 mm; filaments in 3 pairs of unequal length, longest pair fused. Fruit: silique, dehiscent, (1.5)2--2.5 cm, 0.7--0.9 mm wide, linear, flat parallel to septum, unsegmented; pedicels ascending, 2.5--4 mm; style (1.5)3--4.5 mm, stigma entire. Seed: 24--44, in 1 row, 1--1.3 mm, oblong, obscurely winged distally. Chromosomes: 2n=28.
Ecology: Washes, steep hillsides, dry flats, scree, calcareous rubble, rocky bluffs, exposed crevices; Elevation: 600--1300 m. Bioregional Distribution: PR (Santa Ana Mtns, Riverside Co.; Viejas Mtn, Poser Mtn, San Diego Co.). Flowering Time: Mar--Apr
eFlora Treatment Author: Ihsan A. Al-Shehbaz
Reference: Boyd & Ross 1997 Madroño 44:29--47
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botanical illustration including Sibaropsis hammittii


Citation for this treatment: Ihsan A. Al-Shehbaz 2012, Sibaropsis hammittii, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on July 21, 2018.

Citation for the whole project: Jepson Flora Project (eds.) 2018, Jepson eFlora,, accessed on July 21, 2018.

Geographic subdivisions for Sibaropsis hammittii:
PR (Santa Ana Mtns, Riverside Co.; Viejas Mtn, Poser Mtn, San Diego 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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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.