Taxon Report

Streptanthus longisiliquus G. Clifton & R. Buck

long-fruit jewelflower

Print Report

Taxon Summary

Streptanthus longisiliquus, commonly known as long-fruit jewelflower, is a perennial herb in the Brassicaceae that is found only in California. It occurs within Cismontane woodland, and Lower montane coniferous forest, growing at elevations from 715 to 1500 meters. Streptanthus longisiliquus is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.

Classification


Scientific Name:	Streptanthus longisiliquus G. Clifton & R. Buck
Common Name:	long-fruit jewelflower
Family:	Brassicaceae
Element Code:	PDBRA2G400
USDA Plants Symbol:	STLO7
Synonyms/Other Names:	Streptanthus longisiliqus G. Clifton & R. Buck

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: Apr-Sep	Apr-Sep
Elevation:	715-1500 (2345-4920)
General Habitats:	Cismontane woodland, Lower montane coniferous forest
Microhabitat:	Openings
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	4.3
Global Rank:	G3
State Rank:	S3
State List:	None
Fed List:	None
Other Status:
CRPR Changes:	added to 4.3 on 2007-08-31

Occurrence Data from the CNDDB


Total Occurrences:	0
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	0
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	0

Location


California Endemic: True
California Counties and Islands: Name (Code)
Butte (BUT), El Dorado (ELD), Nevada (NEV), Placer (PLA), Shasta (SHA), Tehama (TEH)
Quads: Name (Quad Code)
Berry Creek (3912164), Big Bend (4112118), Butte Meadows (4012115), Chalk Mtn. (4012187), Devils Parade Ground (4012116), Humboldt Peak (4012124), Michigan Bluff (3912016), North Bloomfield (3912038), Onion Butte (4012125), Pollock Pines (3812075), Pulga (3912174), Riverton (3812074), Roaring Creek (4012188)

Threat List Data from the CNDDB


Threat List Total:	0
EOs with Threat Listed:	Total EOs	% of EOs
	0	0 %

Notes



Does this plant occur in NEV, PLU, or YUB Cos.? Possibly threatened by logging and vehicles. See S. campestris in TJM (1993). See Madroño 54(1): 94-95 (2007) for original description.
Threats:

Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 27 January 2025].