Platanthera dilatata (Pursh) Lindl.
FamilyOrchidaceae — APG family: Orchidaceae
SynonymsOrchis dilatata Pursh, Habenaria borealis var. dilatata Cham., Habenaria dilatata (Pursh) Hook., Limnorchis dilatata (Pursh) Rydb.
DescriptionStems from fleshy, rootlike tuberoids; leaves ovate-lanceolate to lanceolate, the lower obtuse; spike many-flowered; flowers white, sweet-scented; lip papillate- margined, rhomboid at base, with linear apex; spur fihform usually shorter than lip.
EcologyWet meadows, bogs. Described from Labrador.
A narrow-leaved form, with spur longer than lip, is common (var. angustlfolla Hook.). P. dilatata forms hybrid swarms with P. convallariaefolia on the western coast (var. chlorantha Hult., with greenish flowers) and with P. hyperborea on the North American continent.
Hultén's Flora About

This is a digital representation of Eric Hultén’s ‘Flora of Alaska and Neighboring Territories: A Manual of the Vascular Plants’, which was published by Stanford University Press in 1968. The book was digitized by C. Webb (at UAMN) as part of the Flora of Alaska project, with funding by the US NSF (Grant 1759964 to Ickert-Bond & Webb), and with permission of Stanford University Press. Data and images © 1968 Board of Trustees of the Leland Stanford Jr. Univ. Usage licence: Creative Commons BY-NC-SA 4.0. NB: You may find OCR errors; please refer to the hard-copy if in doubt.