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Orchidaceae
Isotria

not marked as a favorite taxon Isotria verticillata (Muhlenberg ex Willdenow) Rafinesque. Common name: Large Whorled Pogonia, Large Five-leaves. Phenology: Mar-Jul; Apr-Oct. Habitat: Acidic, mesic to dry forests, less typically seeps and bogs. Distribution: ME and MI south to Panhandle FL and e. TX.

Glossary (beta!)

Origin/Endemic status: Native

Synonymy ⓘ: = AqW, Ar, C, Can, ETx1, F, FNA26, G, Il, K4, Mi, Mo1, NE, NS, NY, Pa, POWO, RAB, S, S13, Tat, Tn, Tx, Va, W, WV, Correll (1950), Luer (1975); = Pogonia verticillata (Muhl. ex Willd.) Nutt. — WH3; Arethusa verticillata Muhlenberg ex Willdenow. Basionym: Arethusa verticillata Muhl. ex Willd. 1805

Links to other floras: = Isotria verticillata - FNA26

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: FACU
  • Eastern Mountains and Piedmont: FACU
  • Great Plains: FAC
  • Midwest: FAC
  • Northcentral & Northeast: FAC

Heliophily ⓘ: 2

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image #1 of Isotria verticillata© Alan Cressler: Isotria verticillata, near Brevard, Transylvania County, North Carolina 5 by Alan Cressler source | Original Image ⭷
image #2 of Isotria verticillata© J. Kevin England, all rights reserved, uploaded by J. Kevin England source | Original Image ⭷
image #3 of Isotria verticillata© Keith Bradley | Original Image ⭷
image #4 of Isotria verticillata© Michelle W. （鍾偉瑋）, some rights reserved (CC BY), uploaded by Michelle W. （鍾偉瑋） source CC-BY | Original Image ⭷
image #5 of Isotria verticillata© Sonnia Hill | Original Image ⭷
image #6 of Isotria verticillata© Tomás Curtis, some rights reserved (CC BY-NC), uploaded by Tomás Curtis source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image #7 of Isotria verticillata© Sequoia Janirella Wrens, some rights reserved (CC BY-NC), uploaded by Sequoia Janirella Wrens source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image #8 of Isotria verticillata© J. Kevin England, all rights reserved, uploaded by J. Kevin England source | Original Image ⭷
image #9 of Isotria verticillata© Nate Hartley, some rights reserved (CC BY-NC), uploaded by Nate Hartley source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image #10 of Isotria verticillata© Michelle W. （鍾偉瑋）, some rights reserved (CC BY), uploaded by Michelle W. （鍾偉瑋） source CC-BY | Original Image ⭷
image #11 of Isotria verticillata© Nate Hartley, some rights reserved (CC BY-NC), uploaded by Nate Hartley source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image #12 of Isotria verticillata© Nate Hartley, some rights reserved (CC BY-NC), uploaded by Nate Hartley source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image #13 of Isotria verticillata© Nate Hartley, some rights reserved (CC BY-NC), uploaded by Nate Hartley source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image #14 of Isotria verticillata© Theo Witsell, some rights reserved (CC BY-NC), uploaded by Theo Witsell source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image #15 of Isotria verticillata© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷
image #16 of Isotria verticillata© Keith Bradley | Original Image ⭷
image #17 of Isotria verticillata© Alaina Krakowiak, some rights reserved (CC BY), uploaded by Alaina Krakowiak source CC-BY | Original Image ⭷
image #18 of Isotria verticillata© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷
image #19 of Isotria verticillata© Gary P. Fleming | Original Image ⭷
image #20 of Isotria verticillata© Michelle W. （鍾偉瑋）, some rights reserved (CC BY), uploaded by Michelle W. （鍾偉瑋） source CC-BY | Original Image ⭷
image #21 of Isotria verticillata© Michelle W. （鍾偉瑋）, some rights reserved (CC BY), uploaded by Michelle W. （鍾偉瑋） source CC-BY | Original Image ⭷
image #22 of Isotria verticillata© Michelle W. （鍾偉瑋）, some rights reserved (CC BY), uploaded by Michelle W. （鍾偉瑋） source CC-BY | Original Image ⭷
image #23 of Isotria verticillata© Michelle W. （鍾偉瑋）, some rights reserved (CC BY), uploaded by Michelle W. （鍾偉瑋） source CC-BY | Original Image ⭷

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Horticultural Information

NCBG trait

Intro: Erect perennial of acidic, moist-to-dry forests.

Stems: Stem hollow, unbranched, purplish to reddish-brown, smooth.

Leaves: Leaves 5-6 in a whorl at top of stem where flowering stalk begins, oval to oblong-lance-shaped, to 3 in. long (enlarging as fruit develops).

Inforescence:

Flowers: Flowers (1, rarely 2) on stalk emerging from center of leaf whorl, to 2 in. wide and bilaterally symmetric. Each flower consists of 3 widely spreading, purplish-green, linear sepals (1â…“--2 â…“ in. long), 2 yellowish-green petals forming a small hood, and a white to yellowish, down-curved lip-petal bearing a fleshy ridge in the middle and purple streaks on lateral lobes.

Fruits: Fruit an erect, ribbed, elliptical capsule.

Comments: Nonflowering plants could be confused with Medeola virginiana, but the latter has a wiry stem covered with long hairs (at least at the base).

Height: 7-13 in.

plant sale text:

bloom table text:

description: Erect perennial of acidic, moist-to-dry forests.

stems: Stem hollow, unbranched, purplish to reddish-brown, smooth.

leaves: Leaves 5-6 in a whorl at top of stem where flowering stalk begins, oval to oblong-lance-shaped, to 3 in. long (enlarging as fruit develops).

inflorescence:

flowers: Flowers (1, rarely 2) on stalk emerging from center of leaf whorl, to 2 in. wide and bilaterally symmetric. Each flower consists of 3 widely spreading, purplish-green, linear sepals (1â…“--2 â…“ in. long), 2 yellowish-green petals forming a small hood, and a white to yellowish, down-curved lip-petal bearing a fleshy ridge in the middle and purple streaks on lateral lobes.

fruits: Fruit an erect, ribbed, elliptical capsule.

comments: Nonflowering plants could be confused with Medeola virginiana, but the latter has a wiry stem covered with long hairs (at least at the base).

cultural notes:

germination code:

native range:



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