Search Field Guide
Advanced Search
Montana Field Guide

Montana Field Guides

Orange Sneezeweed - Helenium hoopesii
Other Names:  Dugaldia hoopesii, Hymenoxys hoopesii

Status Under Review

Global Rank: G5
State Rank: SU

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value:

External Links






 
General Description
Orange Sneezeweed is an herbaceous perennial with several stems that are 20-100 cm tall and which arise from a short rhizome or branched, fibrous-rooted crown. The oblong, lance-shaped, entire-margined basal leaves are 10-30 cm long and 1-5 cm wide with a wide petiole. The numerous, alternate stem leaves become smaller and sessile upward. Foliage is glabrous or sparsely long-hairy. Several flower heads are borne in a flat-topped inflorescence at the top of the stem. Each head has two series of narrow, pointed, hairy involucral bracts. The 17-25 yellowish-orange rays are 15-30 mm long and 3-lobed at the tip. The numerous yellow disk flowers are ca. 5 mm long. The hairy, 4-angled achenes are topped by 5-10 stiff, white, long-pointed scales.

Phenology
Flowering in July-August.

Diagnostic Characteristics
The tall, leafy stems and 3-lobed, orange rays are diagnostic.

Range Comments
OR to MT, south to CA, AZ and NM. One collection from Beaverhead County (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Habitat
Moist, often disturbed soil of meadows and grasslands in the montane zone.

References
Login Logout
Citation for data on this website:
Orange Sneezeweed — Helenium hoopesii.  Montana Field Guide.  .  Retrieved on , from