Jepson eFlora: Taxon page
Key to families | Table of families and genera
Previous taxon Index to accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Next taxon
Caulanthus pilosus
CHOCOLATE DROPS

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: CaulanthusView DescriptionDichotomous Key

Common Name: JEWELFLOWER
Habit: Annual to perennial herb, glabrous or hairs simple (forked). Leaf: basal rosetted or not, petioled, entire, dentate or pinnately lobed, generally deciduous; cauline petioled, or sessile with bases lobed or sagittate. Inflorescence: elongated. Flower: calyx urn-shaped or cylindric, sepals erect (spreading), base sac-like or not; petals yellow, purple, brown, or white, generally channeled, margin wavy or not; stamens in 3 pairs of equal length, or 4 long and 2 short, (all equal), free or filaments of longer pair(s) fused. Fruit: silique, linear, dehiscent, unsegmented, +- sessile, cylindric (flat perpendicular or parallel to septum); stigma entire or 2-lobed. Seed: 24--210, 1 row per chamber, oblong to ovate (+- spheric), plump, wing 0.
Species In Genus: 17 species: southwestern United States, northwestern Mexico. Etymology: (Greek: stem flower, in reference to insertion of flowers along stem)

Caulanthus pilosus S. Watson
NATIVE
Habit: Biennial to weak perennial herb; moderately to densely hairy. Stem: erect to ascending, 2--12 dm, not inflated, simple or branched distally. Leaf: petiole 1--8 cm; proximal blades 2--24 cm, oblanceolate to oblong in outline, pinnately lobed, lobes dentate; distal cauline linear to narrowly oblanceolate, entire or dentate, base not lobed. Inflorescence: terminal sterile flower cluster 0. Flower: sepals 4.5--9.5 mm, +- green to purple; petals 7--12 mm, +- white or +- purple, margins wavy; stamens 4 long, 2 short, filaments free. Fruit: ascending to spreading, 2--18 cm, 1--1.5 mm wide, generally curved; style 0.1--0.3(1) mm, stigma +- 2-lobed; pedicel ascending, 4--18 mm. Seed: 152--198, 1--2 mm, oblong; cotyledons entire.
Ecology: Uncommon. Open, dry areas, flats, rocky slopes, sagebrush scrub, pinyon/juniper woodland; Elevation: 600--2800 m. Bioregional Distribution: c&s SNH (e slope), s MP (Honey Lake), SNE, n DMtns; Distribution Outside California: to southeastern Oregon, southern Idaho, western Utah. Flowering Time: Mar--Jul
eFlora Treatment Author: Ihsan A. Al-Shehbaz
Jepson Online Interchange

Previous taxon: Caulanthus major
Next taxon: Caulanthus simulans

Name Search
botanical illustration including Caulanthus pilosus

Contact/Feedback

Citation for this treatment: Ihsan A. Al-Shehbaz 2016. Caulanthus pilosus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=18408, accessed on August 25, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on August 25, 2016.


Caulanthus pilosus
click for enlargement
© 2015 Steve Matson
Caulanthus pilosus
click for enlargement
© 2009 Steve Matson
Caulanthus pilosus
click for enlargement
© 2009 Steve Matson
Caulanthus pilosus
click for enlargement
© 2015 Steve Matson
Caulanthus pilosus
click for enlargement
© 2010 California Academy of Sciences
Caulanthus pilosus
click for enlargement
© 2008 Steve Matson

More photos of Caulanthus pilosus in CalPhotos


Geographic subdivisions for Caulanthus pilosus:
c&s SNH (e slope), s MP (Honey Lake), SNE, n DMtns;
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.
READ ABOUT YELLOW FLAGS
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).

View elevation by latitude chart
Data provided by the participants of the Consortium of California Herbaria.
View all CCH records

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.