Platanthera


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Platanthera

 

(butterfly orchid), a genus of perennial plants of the family Orchidaceae. They are grasses with paired underground tubers, the larger of which is withered, and the smaller juicy. The stem is single with one or two contiguous leaves near the base. The flowers, which are in a loose inflorescence, are white or greenish white and have an entire lip and a long spur. There are more than 50 species (according to other sources, up to 200), distributed in the northern hemisphere. Eight species are found in the USSR. The lesser butterfly orchid (Platanthera bifolia), which has white flowers that are particularly fragrant at night, grows in the southern forest and foreststeppe zones of the European USSR and in forest meadows and thickets in the southern part of Western Siberia. Like the tubers of other orchids, the tubers of butterfly orchids are called salep and are used medicinally.

References in periodicals archive ?
A multivariate approach to post-pollination changes in the floral scent of Platanthera bifolia (Orchidaceae).
Myco rrhizal fungi and cold-assisted symbiotic germination of the federally threatened eastern prairie fringed orchid, Platanthera leucophaea (Nuttall) Lindley Am Midland Nat, 145: 168-175.
Blooms: July through September Lesser purple fringed orchid Platanthera psycodes
Insects associated with the prairie fringed orchids, Platanthera praeclara Sheviak & Bowles and P.
Key words: deception; floral traits; geitonogamy; nectar; Orchidaceae; Orchis mascula; Orchis morio; Platanthera chlorantha; pollen carryover; pollen limitation; pollination.
For example, Robertson and Wyatt (1990) were able to attribute spur length variation in Platanthera ciliaris in the southeastern United States to differences in the proboscis length between two butterfly species that are the primary pollinators of this orchid at mountain and lowland sites, respectively.
Status of Platanthera praeclara Sheviak and Bowles (western prairie fringed-orchid) in the Platte River Valley in Nebraska from Hamilton to Garden Counties).
2006), and Platanthera bifolia which produces lilac aldehydes (Plepys et al.
Reproductive biology of the yellow-fringed orchid Platanthera ciliaris.
sinuatus (bugle-weed), Scutellaria galericulata (skull-cap), Solidago lanceolata and squarrosa East Branch (golden-rod), Diplopappus umbellatus (double-bristled aster), Aster radula, Cicuta maculata and bulbifera (water-hemlock), meadowsweet, Lysimachia stricta and ciliata (loose-strife), Galium trifidum (small bed-straw), Lilium Canadense (wild yellow-lily), Platanthera peramna and psycodes (great purple orchis and small purple-fringed orchis), Mimulus ringens (monkey-flower), dock (water), blue flag, Hydrocotyle Americana (marsh pennywort), Sanicula Canadensis?
by Dobson, 2006), including Silene latifolia (Caryophyllaceae; Dotterl and Jurgens, 2005) and Platanthera bifolia (Orchidaceae; Plepys et al.