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Halimolobos jaegeri

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: HalimolobosView Description 

Habit: [Annual] perennial herb, hairs +- many-branched, tree-like. Leaf: basal simple, entire or dentate to deeply lobed; distal cauline sessile, base wedge-shaped to truncate (lobed). Inflorescence: elongated or not. Flower: sepals erect, base not sac-like; petals oblanceolate to spoon-shaped, not clawed, white. Fruit: silique [silicle], dehiscent, unsegmented, linear [ovate to oblong], flat parallel or perpendicular to septum, hairy, hairs small +- sessile, some long-stalked; stigma entire. Seed: 16--110, in 1[2] rows, oblong, wingless.
Species In Genus: 6 species: southwestern United States, northern Mexico. Etymology: (Greek: sea pod, from resemblance of fruit hair cover to salt)
eFlora Treatment Author: Ihsan A. Al-Shehbaz
Reference: Bailey et al. 2007 Syst Bot 32:140--156

Halimolobos jaegeri (Munz) Rollins
Habit: Perennial herb; moderately to densely hairy. Stem: many-branched distally, 1.5--7.5 dm, +- woody at base. Leaf: proximal, middle cauline petioled, (1.5)3--8(11.5) cm, oblanceolate to obovate, densely hairy, base tapered, margin coarsely dentate. Flower: sepals 2--4 mm; petals (3.5)4.5--6 mm, 1--1.5 mm wide. Fruit: (1)1.5--2.6 cm, 0.6--0.9 mm wide, cylindric, constricted between seeds; valves densely hairy; style 1--2.2 mm; pedicels spreading, (3)4--9(12) mm, densely hairy. Seed: 28--38, in 1 row, 0.9--1.2 mm, oblong.
Ecology: Limestone cliffs, steep rock outcrops, sagebrush-juniper areas; Elevation: 1200--2600 m. Bioregional Distribution: W&I, DMoj; Distribution Outside California: Nevada. Flowering Time: May--Sep Note: Halimolobos virgata now included in Transberingia.
Synonyms: Halimolobos diffusa (A. Gray) O.E. Schulz var. jaegeri (Munz) Rollins;
eFlora Treatment Author: Ihsan A. Al-Shehbaz
Reference: Bailey et al. 2007 Syst Bot 32:140--156
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botanical illustration including Halimolobos jaegeri


Citation for this treatment: Ihsan A. Al-Shehbaz 2012, Halimolobos jaegeri, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on September 19, 2018.

Citation for the whole project: Jepson Flora Project (eds.) 2018, Jepson eFlora,, accessed on September 19, 2018.

Halimolobos jaegeri
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© 2011 Steve Matson
Halimolobos jaegeri
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© 2009 Gary A. Monroe
Halimolobos jaegeri
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© 2017 Steve Matson
Halimolobos jaegeri
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© 2017 Steve Matson
Halimolobos jaegeri
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© 2009 Steve Matson
Halimolobos jaegeri
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© 2013 Steve Matson

More photos of Halimolobos jaegeri in CalPhotos

Geographic subdivisions for Halimolobos jaegeri:
W&I, DMoj;
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.