Copy permalink to share
Orchidaceae
Platanthera

Platanthera grandiflora (Bigelow) Lindley. Common name: Large Purple Fringed Orchid, Plume-royal. Phenology: Jun-early Jul. Habitat: Bog, 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

Glossary (beta!)

Subgenus: Fimbriella.

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 in key(s)

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

Your browser does not support SVGs

Hover over a shape, letter, icon, or arrow on the map for definition or see the legend.

image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Alan Cressler: Platanthera grandiflora, Great Craggy Mountain, Blue Ridge Parkway, Buncombe County, North Carolina 3 by Alan Cressler source
image of plant© Jim Fowler | Original Image ⭷
image of plant© Alan Cressler: Platanthera grandiflora, Chattahoochee National Forest, Gilmer County, Georgia 1 by Alan Cressler source | Original Image ⭷
image of plant© Will Stuart | Original Image ⭷
image of plant© Alan Cressler CC-BY-NC, permission granted to NCBG | Original Image ⭷

Feedback

See something missing or incorrect about Platanthera grandiflora? Let us know here:

  1. Please include your name and if possible, email in case when need to clarify what you wrote.
  2. If you opt out of including email, please be as specific as possible (e.g., which photo is incorrect?)
  3. Please do not submit questions asking to identify plants or about horticultural topics (e.g., how do I control an invasive plant in my garden?). Instead, those questions can be submitted here for the Carolinas region only.
  4. Please do not send us feedback about unkeyed species as this work is ongoing.
  5. Please allow time for flora edits to show in our next data release. We greatly appreciate your feedback but may require extra time to research complicated taxonomic issues.

Horticultural Information

NCBG trait

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:



0 unsaved edits on this page.