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Senecio triangularis Hook.
Arrowleaf Groundsel, Arrowleaf ragwort
Synonym(s): Senecio gibbsonsii, Senecio triangularis var. angustifolius
USDA Symbol: setr
Broadly or narrowly triangular or arrowhead-shaped leaves, with many sharp teeth on edges, grow on several leafy stems that bear yellow flower heads in a branched, flattish cluster at top.
As indicated by the common and technical names, the triangular leaves are distinctive.
Bloom InformationBloom Color: Yellow
Bloom Time: Jun , Jul , Aug , Sep
, WY Canada: AB
, NT Native Distribution:
Alaska and western Canada; south to southern California, Arizona, and New Mexico. Native Habitat:
Stream banks and other moist places in the mountains.
Growing ConditionsWater Use: High
Light Requirement: Part Shade
CaCO3 Tolerance: Medium
BenefitConspicuous Flowers: yes
National Wetland Indicator Status
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1
(Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here
for map of regions.
Record Last Modified: 2007-01-01
Research By: TWC Staff