Taxon Details

Chylismia claviformis ssp. cruciformis

cruciform evening-primrose

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Taxon Summary:

Chylismia claviformis ssp. cruciformis, commonly known as cruciform evening-primrose, is a annual herb in the Onagraceae that is found in California and elsewhere. It occurs within Chenopod scrub, and Great Basin scrub, growing at elevations from 600 to 1400 meters. Chylismia claviformis ssp. cruciformis is ranked 2B.3, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Not very threatened in California.

Classification

Scientific Name: Chylismia claviformis (Torr. & Frem.) A. Heller ssp. cruciformis (Kellogg) W.L. Wagner & Hoch
Common Name: cruciform evening-primrose
Family:	Onagraceae
Element Code:	PDONA030D4
USDA Plants Symbol:
Synonyms/Other Names: Camissonia claviformis ssp. cruciformis
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	2B.3
Fed List:	None
State List:	None
Global Rank:	G5T4
State Rank:	S2
Other Status:
CRPR Changes:
Add Date:	2001-01-01
Date Edited:	2021-11-05

Ecology and Life History

Lifeform: annual herb

Blooming Period: May-Jul

Elevation:
600 - 1400 meters
1970 - 4595 feet

General Habitats:

Chenopod scrub
Great Basin scrub

Microhabitat Details:

Microhabitat:

Clay

Notes

Notes: See Proceedings of the California Academy of Sciences 2:227 (1863) for original description, Brittonia 16:282 (1964) for revised nomenclature, and Contributions from the U.S. National Herbarium 37:213-214 (1969) for taxonomic treatment.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	3
	Total EOs	% of EOs
EOs with Threat Listed:	15	60 %
Other	12	48%
Road/trail construction/maint.	2	8%
Grazing	2	8%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					25
A	B	C	D	X	U
0	3	4	0	0	18

Occurrence Status:
Historical >20 Years	21
Recent <=20 Years	4

Presence:
Presumed Extant	25
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA), Idaho (ID), Nevada (NV), Oregon (OR)

California Counties and Islands: Name (Code)
Lassen (LAS), Modoc (MOD)

Quads: Name (Quad Code)
Hays Canyon (4111938), Calneva Lake (4012021), Cherry Mtn. (4012051), Doyle (4012011), Eagleville (4112031), Five Springs (4012052), Karlo (4012053), Likely (4112025), Little Mud Flat (4012042), Shaffer Mtn. (4012043), Spencer Creek (4012031), Wendel (4012032)

Notes:

Definitions of codes following a county and/or quad:
*		Presumed extirpated
(?)		Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.

Regional Map

Map

Presumed Extant

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CNPS Rare Plant Inventory