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Vascular Plants of California
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Sibara filifolia
SANTA CRUZ ISLAND ROCKCRESS


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: SibaraView DescriptionDichotomous Key


Habit: Annual, glabrous or with simple, forked, or many-branched hairs. Leaf: basal, proximal cauline finely pinnately divided; distal petioled, pinnately lobed, base not lobed. Inflorescence: much elongated. Flower: sepals erect, base not sac-like; petals spoon-shaped to oblanceolate, white to pink or purple, clawed. Fruit: silique, dehiscent, linear, flat parallel to septum or cylindric, unsegmented; stigma entire. Seed: 14--94, in 1 or 2 rows, wingless.
Species In Genus: 5 species: North America. Etymology: (Anagram of Arabis) Note: Sibara virginica now called Planodes virginicum.
eFlora Treatment Author: Ihsan A. Al-Shehbaz
Reference: Al-Shehbaz 2007 Novon 17:397--402
Sibara filifolia (Greene) Greene
NATIVE
Stem: generally 1.5--3 dm, distally simple or few-branched. Leaf: basal early-deciduous; cauline 2--4 cm, pinnately divided; lobes 5--15 mm, 0.2--0.8 mm wide, linear to thread-like, entire. Flower: sepals 2.2--3 mm, oblong; petals spoon-shaped, purple to lavender. Fruit: style 0.5--0.8 mm; pedicel ascending to +- spreading, (2)3--10(15) mm, straight, slender. Seed: 1--1.3 mm, oblong.
Ecology: Dry ridges; Elevation: < 500 m. Bioregional Distribution: ChI (Santa Catalina, San Clemente, Santa Cruz islands). Flowering Time: Apr
Jepson eFlora Author: Ihsan A. Al-Shehbaz
Reference: Al-Shehbaz 2007 Novon 17:397--402
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)
Listed on CNPS Rare Plant Inventory

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Botanical illustration including Sibara filifolia

botanical illustration including Sibara filifolia

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Citation for this treatment: Ihsan A. Al-Shehbaz 2012, Sibara filifolia, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=44306, accessed on December 11, 2019.

Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on December 11, 2019.

Sibara filifolia
click for enlargement
© 2011 Neal Kramer

More photos of Sibara filifolia in CalPhotos



Geographic subdivisions for Sibara filifolia:
ChI (Santa Catalina, San Clemente, Santa Cruz islands).
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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 occurence).





 

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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

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.