Platanthera grandiflora (Bigelow) Lindley. Subgenus: Fimbriella. Common name: Large Purple Fringed Orchid, Plume-royal. Phenology: Jun-early Jul. Habitat: Bogs, seepages, moist places at high elevations. Distribution: NL (Newfoundland) and ON south to NJ, OH, and MI, and south in the mountains to w. NC and ne. GA
ID notes: Blooming 3-4 weeks earlier than either P. psycodes and P. shriveri when they grow in proximity.
Origin/Endemic status: Native
Taxonomy Comments: If Orchis fimbriata Aiton is conspecific, the correct name is P. fimbriata (Aiton) Lindley.
Synonymy ⓘ: = AqW, Can, Il, K4, NE, NS, NY, POWO, Tn, Va; = Habenaria grandiflora (Bigelow) Torr.; = Platanthera fimbriata (Aiton) Lindl.; < Blephariglottis grandiflora (Bigelow) Rydb. — S, S13; < Fimbriella psycodes (L.) Butzin var. grandiflora (Bigelow) Butzin — Butzin (1981); < Habenaria fimbriata (Aiton) R.Br. — F, Tat, WV; < Habenaria psycodes (L.) Spreng. var. grandiflora (Bigelow) A.Gray — C, G, RAB, Correll (1950); < Platanthera grandiflora (Bigelow) Lindl. — FNA26, Pa, W, Efimov (2016), Luer (1975). Basionym: Orchis grandiflora Bigelow 1824
Links to other floras: < Platanthera grandiflora - FNA26
Show parent genus | Show parent in key(s)
Wetland Indicator Status:
- Atlantic and Gulf Coastal Plain: FACW
- Eastern Mountains and Piedmont: FACW (taxonomic split from wetland indicator species)
- Midwest: FACW (taxonomic split from wetland indicator species)
- Northcentral & Northeast: FACW (taxonomic split from wetland indicator species)
Heliophily ⓘ: 6
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© Gary P. Fleming | Original Image ⭷
© Alan Cressler: Platanthera grandiflora, Great Craggy Mountain, Blue Ridge Parkway, Buncombe County, North Carolina 3 by Alan Cressler source
© Jim Fowler | Original Image ⭷
© Alan Cressler: Platanthera grandiflora, Chattahoochee National Forest, Gilmer County, Georgia 1 by Alan Cressler source | Original Image ⭷
© Will Stuart | Original Image ⭷
© Alan Cressler CC-BY-NC, permission granted to NCBG | Original Image ⭷Feedback
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Horticultural Information
Intro: Erect perennial found in bogs, seepages and other moist places at high elevations.
Stems: Stem somewhat fleshy, unbranched, smooth.
Leaves: Leaves alternate, lance-shaped to oval, 3-10 in. long (reduced upward), with parallel veins and a central crease (keeled), smooth.
Inforescence:
Flowers: Flowers 30-60 in a dense, cylindric terminal raceme; purple; 3/4-1 in. long; bilaterally symmetric; consisting of 2 petals and a sepal forming a flattish hood, 2 wing-like lateral sepals, a 3-lobed lip-petal (each lobe fan-like and prominently fringed) and a long, club-shaped spur.
Fruits: Fruit an ellipsoid capsule.
Comments:
Height: 1-4 ft.
plant sale text:
bloom table text:
description: Erect perennial found in bogs, seepages and other moist places at high elevations.
stems: Stem somewhat fleshy, unbranched, smooth.
leaves: Leaves alternate, lance-shaped to oval, 3-10 in. long (reduced upward), with parallel veins and a central crease (keeled), smooth.
inflorescence:
flowers: Flowers 30-60 in a dense, cylindric terminal raceme; purple; 3/4-1 in. long; bilaterally symmetric; consisting of 2 petals and a sepal forming a flattish hood, 2 wing-like lateral sepals, a 3-lobed lip-petal (each lobe fan-like and prominently fringed) and a long, club-shaped spur.
fruits: Fruit an ellipsoid capsule.
comments:
cultural notes:
germination code:
native range:
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