Search Field Guide
Advanced Search
Montana Field Guide

Montana Field Guides

Roundleaf Orchid - Platanthera orbiculata
Other Names:  Habenaria orbiculata


Global Rank: G5
State Rank: S3S4

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 9

External Links






 
General Description
Stems scapose, 25–60 cm. Leaves basal, 2, opposite, appressed to the ground, broadly elliptic, 7–15 cm long, glossy. Inflorescence open, 5–20 cm long with 5 to 30 flowers; bracts 5–15 mm long. Flowers white; lateral sepals 6–10 mm long; hood 4–6 mm long; lip petal 7–13 mm long, linear-lanceolate, pendent; spur slender, curved, 10–20 mm long. Capsule 10–12 mm long, cylindric (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Our plants are variety orbiculata.

Species Range
Present
 


Range Comments
AK to NL south to OR, MT, IN and GA (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 20

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density

Recency

 

(Observations spanning multiple months or years are excluded from time charts)



Habitat
Moist coniferous forest; valleys to lower subalpine (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
Login Logout
Citation for data on this website:
Roundleaf Orchid — Platanthera orbiculata.  Montana Field Guide.  .  Retrieved on , from