Taxon Details

Trifolium piorkowskii

maverick clover

View Report Copy Link Calflora eFlora CCH CalPhotos iNaturalist

Taxon Summary:

Trifolium piorkowskii, commonly known as maverick clover, is a annual herb in the Fabaceae that is . It occurs within Chaparral, Cismontane woodland, Lower montane coniferous forest, Valley and foothill grassland (mesic), and Vernal pools, growing at elevations from 160 to 680 meters. Trifolium piorkowskii is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Classification

Scientific Name: Trifolium piorkowskii Rand. Morgan & A.L. Barber
Common Name: maverick clover
Family:	Fabaceae
Element Code:	PDFAB40410
USDA Plants Symbol:	TRPI2
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G2
State Rank:	S2
Other Status:
CRPR Changes: changed from CBR to 1B.2 on 2018-01-30
Add Date:	2016-11-10
Date Edited:	2021-10-08

Ecology and Life History

Lifeform: annual herb

Blooming Period: Apr-May

Elevation:
160 - 680 meters
525 - 2230 feet

General Habitats:

Chaparral
Cismontane woodland
Lower montane coniferous forest
Valley and foothill grassland (mesic)
Vernal pools

Microhabitat Details:

Microhabitat:

Clay
Openings
Streambanks (often)
Volcanic

Notes

Notes: Possibly threatened by grazing, trampling, vehicles, and mining. Similar to, and previously identified as, T. fucatum. See Novon 23(1):65-69 (2014) for original description.
Threats:
Taxonomy:

Threat List Data from the CNDDB

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

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					5
A	B	C	D	X	U
0	0	0	0	0	5

Occurrence Status:
Historical >20 Years	5
Recent <=20 Years	0

Presence:
Presumed Extant	5
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Shasta (SHA)

Quads: Name (Quad Code)
Oak Run (4012261), Redding (4012254), Shingletown (4012148), Tuscan Buttes Ne (4012241)

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

Click on quad for name. Hold Shift Key to use mouse scroll wheel

CNPS Rare Plant Inventory