Taxon Report

Mitellastra caulescens (Nutt.) Howell

leafy-stemmed mitrewort

Print Report

© 2014 Dana York

Classification


Scientific Name:	Mitellastra caulescens (Nutt.) Howell
Common Name:	leafy-stemmed mitrewort
Family:	Saxifragaceae
Element Code:	PDSAX0N020
USDA Plants Symbol:
Synonyms/Other Names:	Mitella caulescens

Ecology and Life History


Lifeform:	perennial rhizomatous herb
Blooming Period: (Mar)Apr-Oct	(Mar)Apr-Oct
Elevation:	5-1700 (15-5580)
General Habitats:	Broadleafed upland forest, Lower montane coniferous forest, Meadows and seeps, North Coast coniferous forest
Microhabitat:	Mesic, Roadsides (sometimes)
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	4.2
Global Rank:	G5
State Rank:	S4
State List:	None
Fed List:	None
Other Status:
CRPR Changes:	changed from 2.3 to 4.2 on 2006-06-08

Occurrence Data from the CNDDB


Total Occurrences:	21
Element Occurrence Ranks:
Excellent (A)	3
Good (B)	4
Fair (C)	1
Poor (D)	1
None (X)	0
Unknown (U)	12

Location


California Endemic: False
California Counties and Islands: Name (Code)
Del Norte (DNT), Humboldt (HUM), Madera (MAD), Mendocino (MEN), Siskiyou (SIS), Tehama (TEH), Trinity (TRI)
Quads: Name (Quad Code)
Ah Pah Ridge (4112348), Albion (3912327), Arcata North (4012481), Arcata South (4012471), Bear Harbor (3912388), Blue Creek Mtn. (4112347), Blue Lake (4012388), Board Camp Mtn. (4012366), Bridgeville (4012347), Childs Hill (4112461), Crannell (4112411), Crescent City (4112472), Dutchmans Knoll (3912356), Elk (3912326), Etna (4112248), Fern Canyon (4112441), Fields Landing (4012462), Fort Bragg (3912347), Grider Valley (4112362), Hales Grove (3912377), High Divide (4112481), Hiouchi (4112471), Holter Ridge (4112338), Hydesville (4012451), Iaqua Buttes (4012368), Inglenook (3912357), Johnsons (4112337), Klamath Glen (4112358), Korbel (4012378), Leggett (3912376), Lincoln Ridge (3912366), Lord-ellis Summit (4012387), Mad River Buttes (4012367), Mallo Pass Creek (3912316), Maple Creek (4012377), Mathison Peak (3912336), McWhinney Creek (4012461), Mendocino (3912337), Myers Flat (4012337), North Yolla Bolly (4012228), Northspur (3912345), Noyo Hill (3912346), Orick (4112431), Owl Creek (4012358), Panther Creek (4112318), Polar Bear Mtn. (4112385), Redcrest (4012348), Requa (4112451), Scotia (4012441), Showers Mtn. (4012356), Sims Mountain (4012365), Sister Rocks (4112462), Smith River (4112482), Tish Tang Point (4112315), Trinity Mtn. (4112314), Westport (3912367)

Threat List Data from the CNDDB


Threat List Total:	4
EOs with Threat Listed:	Total EOs	% of EOs
	9	43 %
Logging	9	42%
Foot traffic/trampling	2	9%
Other	1	4%
Road/trail construction/maint.	1	4%

Notes



Threatened by logging and road maintenance.
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 10 January 2025].