Search Field Guide
Advanced Search
Montana Field Guide

Montana Field Guides

Devil's Beggarticks - Bidens frondosa


Global Rank: G5
State Rank: S4S5
* (see State Rank Reason below)

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 6

External Links






State Rank Reason (see State Rank above)
Numerous collections from Sanders, Big Horn,cTreasure, Dawson, Yellowstone counties and the CM Russell NWR. Probably undercollected due to inconspicuous appearance.
 
General Description
Annual. Stems erect, 20–80 cm, often branched. Herbage glabrous to sparsely puberulent. Leaves distinctly petiolate; blades 1–8 cm long, divided into 3 lanceolate, serrate leaflets. Inflorescence: heads several; peduncles 1–8 cm long. Involucre: outer phyllaries ca. 8, linear-oblanceolate, 1–2 cm long, ciliate; inner phyllaries ovate, 4–8 mm long with erose, appendaged tips. Rays absent or 3 to 5, reduced. Disk corollas 2–3 mm long. Pappus 2, awns 2–4 mm long. Achenes flattened, 6–12 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Diagnostic Characteristics
Easily confused with Bidens vulgata, numerous MONTU collections of B. vulgata were mislabelled as B. frondosa and visa-versa.

Range Comments
Throughout N. America (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Habitat

References
Login Logout
Citation for data on this website:
Devil's Beggarticks — Bidens frondosa.  Montana Field Guide.  .  Retrieved on , from