Taxon Report

Horkelia howellii Horkelia howellii (Greene) Rydb.

Howell’s horkelia

Print Report


© 2016 Keir Morse

Taxon Summary

Horkelia howellii, commonly known as Howell’s horkelia, is a perennial herb in the Rosaceae that is . It occurs within Chaparral, and Lower montane coniferous forest, growing at elevations from 60 to 1200 meters. Horkelia howellii is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.


  Classification

Scientific Name:
Horkelia howellii Horkelia howellii (Greene) Rydb.
Common Name:
Howell’s horkelia
Family: Rosaceae
Element Code: PDROS0W0M0
USDA Plants Symbol:
Synonyms/Other Names:

Ecology and Life History

Lifeform: perennial herb
Blooming Period: Jun-Aug Jun-Aug
Elevation: 60-1200 (195-3935)
General Habitats: Chaparral, Lower montane coniferous forest
Microhabitat: Clay, Serpentine
Microhabitat Details:

Occurrence Data from the CNDDB

Total Occurrences: 0
Element Occurrence Ranks:
   Excellent (A) 0
   Good (B) 0
   Fair (C) 0
   Poor (D) 0
   None (X) 0
   Unknown (U) 0
California Endemic:  False
California Counties and Islands: Name (Code)
Del Norte (DNT), Humboldt (HUM)
Quads: Name (Quad Code)
Bark Shanty Gulch (4112345), Broken Rib Mtn. (4112386), Gasquet (4112378), High Divide (4112481), High Plateau Mtn. (4112388), Hiouchi (4112471), Orleans (4112335), Orleans Mtn. (4112334), Shelly Creek Ridge (4112387), Somes Bar (4112344)

Notes

Threats:
Taxonomy:

Previously included in H. sericata.

Selected References

CRPR List Addition on 2021-04-23
Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 27 January 2025].