Taxon Details

Rhinotropis heterorhyncha

notch-beaked milkwort

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Taxon Summary:

Rhinotropis heterorhyncha, commonly known as notch-beaked milkwort, is a perennial herb in the Polygalaceae that is found in California and elsewhere. It occurs within Mojavean desert scrub, growing at elevations from 900 to 1600 meters. Rhinotropis heterorhyncha is ranked 2B.3, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Not very threatened in California.

Classification

Scientific Name: Rhinotropis heterorhyncha (Barneby) J.R. Abbott
Common Name: notch-beaked milkwort
Family:	Polygalaceae
Element Code:	PDPGL02270
USDA Plants Symbol:	POHE7
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	2B.3
Fed List:	None
State List:	None
Global Rank:	G2
State Rank:	S2
Other Status:
CRPR Changes:
Add Date:	1994-01-01
Date Edited:	2023-09-05

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Apr-May

Elevation:
900 - 1600 meters
2955 - 5250 feet

General Habitats:

Mojavean desert scrub (alkaline)

Microhabitat Details:

Microhabitat:

Notes

Notes: Known in CA from three occurrences in the Funeral Mtns. On watch list in NV. See Leaflets of Western Botany 3:194 (1943) for original description, and Journal of the Arnold Arboretum 60:504-514 (1979) for revised nomenclature.
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:					3
A	B	C	D	X	U
0	0	0	0	0	3

Occurrence Status:
Historical >20 Years	3
Recent <=20 Years	0

Presence:
Presumed Extant	3
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA), Nevada (NV)

California Counties and Islands: Name (Code)
Inyo (INY)

Quads: Name (Quad Code)
Chloride City (3611668), Daylight Pass (3611678), East of Chloride City (3611667)

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 Status Review:	Proposed Non-Substantive Name Changes: Multiple taxa in various plant families from the Jepson eFlora revision 11 (2023)
Revised Nomenclature:	Journal of the Botanical Research Institute of Texas 5: 125 – 137. (2011)

CNPS Rare Plant Inventory