Search Field Guide
Advanced Search
MT Gov Logo
Montana Field Guide

Montana Field Guides

Tansy-leaf Evening-primrose - Camissonia tanacetifolia
Other Names:  Oenothera tanacetifolia

Status Under Review
Undetermined Origin

Global Rank: G5
State Rank: SU
(see State Rank Reason below)

Agency Status
MNPS Threat Rank:

External Links

State Rank Reason (see State Rank above)
Reported for Montana (Hitchcock & Cronquist 1973). A couple historical collections from Gallatin County exist. However, more information is needed to determine the status of the species in the state.
General Description
Taprooted, acaulescent perennial. Herbage glabrate. Leaves petiolate, all basal; the blade narrowly lanceolate, deeply pinnately lobed, 5–20 cm long. Flowers sessile in axils of leaves; hypanthium 2–5 cm mm long, the upper expanded portion 3–7 mm long; sepals 6–13 mm long reflexed; petals 1–2 cm long; stigma globose, slightly lobed. Capsule sessile, narrowly ovoid, 4-angled, 10–25 mm long, glabrate, slightly curved with a beak 5–15 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Wagner et al. (2007, Syst. Bot. Mongr. Vol. 83) treat this as Taraxia tanacetifolia (Torr. & A. Gray) Piper.

Range Comments
WA to MT south to CA, NV, ID. Collected in Gallatin and Madison counties (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).


Login Logout
Citation for data on this website:
Tansy-leaf Evening-primrose — Camissonia tanacetifolia.  Montana Field Guide.  .  Retrieved on , from