Round-leaved Bog Orchid
Platanthera orbiculata
Summary 2
Platanthera orbiculata, the lesser roundleaved orchid, is a species of orchid native to forested areas of North America. It is widespread across most of Canada and parts of the United States (Alaska, New England, Appalachian Mountains, Great Lakes Region, Rocky Mountains, Black Hills and northern Cascades).
Description 3
Plants 17–62 cm. Leaves 2, in subequal basal pair lying on ground; bracts (very rarely, 0–)1–6, scattered along stem; blade broadly elliptic to orbiculate or oblate, 5–21 × 3–22 cm. Spikes lax to dense. Flowers resupinate, rather showy; calyx mostly greenish white; corolla mostly white; lateral sepals reflexed to somewhat spreading; petals lanceolate-falcate, margins entire; lip descending to somewhat reflexed, linear-oblong to linear-lanceolate, without basal thickening, 7–17 × 1–2.5 mm, margins entire; spur slenderly clavate, 14–27 mm; rostellum lobes directed strongly forward, wide-spreading, angular; pollinaria nearly straight, 3–4.5(–4.8, very rarely) mm; pollinia remaining enclosed in anther sacs; viscidia orbiculate; ovary slender to rather stout, mostly 10–26 mm. 2n = 42.
Sources and Credits
- (c) David Yeany, some rights reserved (CC BY-NC), uploaded by David Yeany
- Adapted by bpff from a work by (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Platanthera_orbiculata
- (c) Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA, some rights reserved (CC BY-NC-SA), http://eol.org/data_objects/5019076
More Info
- iNat taxon page
- Biodiversity Heritage Library
- BOLD Systems BIN search
- eFloras.org
- Flora of North America (beta)
- Global Biodiversity Information Facility (GBIF)
- Go Botany
- HOSTS - a Database of the World's Lepidopteran Hostplants
- IPNI (with links to POWO, WFO, and BHL)
- Maryland Biodiversity Project
- NatureServe Explorer 2.0
- OregonFlora.org
- SEINet Symbiota portals
- Tropicos
- USDA PLANTS database
- VASCAN by Canadensys
- World Flora Online
