Taxon Details

Tonestus lyallii

Lyall's tonestus

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Taxon Summary:

Tonestus lyallii, commonly known as Lyall's tonestus, is a perennial rhizomatous herb in the Asteraceae that is found in California and elsewhere. It occurs within Alpine boulder and rock field, growing at elevations from 2500 to 2700 meters. Tonestus lyallii is ranked 2B.3, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Not very threatened in California.

Classification

Scientific Name: Tonestus lyallii (Gray) G. Nesom
Common Name: Lyall's tonestus
Family:	Asteraceae
Element Code:	PDASTE0050
USDA Plants Symbol:	TOLY
Synonyms/Other Names: Haplopappus lyallii Gray
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	2B.3
Fed List:	None
State List:	None
Global Rank:	G5
State Rank:	S1
Other Status:
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2021-05-26

Ecology and Life History

Lifeform: perennial rhizomatous herb

Blooming Period: Jul-Aug

Elevation:
2500 - 2700 meters
8205 - 8860 feet

General Habitats:

Alpine boulder and rock field

Microhabitat Details:

Microhabitat:

Notes

Notes: See Madroño 21(8):535 (1972) for first CA occurrence, and Phytologia 68(2):144-155 (1990) 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), Colorado (CO), Idaho (ID), Montana (MT), Nevada (NV), Oregon (OR), Washington (WA), Wyoming (WY)

California Counties and Islands: Name (Code)
Trinity (TRI)

Quads: Name (Quad Code)
Mt. Hilton (4012381), Siligo Peak (4012288), Thompson Peak (4112311)

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