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Sisyrinchium atlanticum E.P. Bicknell. Atlantic Blue-eyed-grass, Eastern Blue-eyed Grass. Phen: Mar-Jun; Jun-Aug. Hab: Dry, sandy or rocky places, moist meadows, bogs, pine savannas, streambanks. Dist: NS and ME west to OH, IN, and MO, south to s. FL and e. TX.

ID notes: "Other key characteristics of S. atlanticum are its bent or geniculate nodes and individuals that usually dry yellowish to light olive, strongly contrasting with the black fruiting capsules." (Spaulding et al. 2023)

Origin/Endemic status: Native

Synonymy : = Ar, C, ETx1, F, FNA26, G, GW1, Il, K1, K3, K4, Mi, Mo1, NE, NY, Pa, S, Tat, Tn, Tx, Va, W, Hornberger (1991); = Sisyrinchium mucronatum Michx. var. atlanticum (E.P.Bicknell) H.E.Ahles – RAB; < Sisyrinchium angustifolium Mill. – WH3; > Sisyrinchium atlanticum E.P.Bicknell – S13; > Sisyrinchium flexile E.P.Bicknell – S13; > Sisyrinchium longifolium E.P.Bicknell – S13; > Sisyrinchium nanum E.P.Bicknell – S13; > Sisyrinchium scoparium E.P.Bicknell – S13; > Sisyrinchium tracyi E.P.Bicknell – S13; > Sisyrinchium violaceum E.P.Bicknell – S13

Links to other floras: = Sisyrinchium atlanticum - FNA26

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: FACW (taxonomic lump from wetland indicator species)
  • Eastern Mountains and Piedmont: FACW (taxonomic lump from wetland indicator species)
  • Great Plains: FACW (taxonomic lump from wetland indicator species)
  • Midwest: FAC (taxonomic lump from wetland indicator species)
  • Midwest: FACW (taxonomic lump from wetland indicator species)
  • Northcentral & Northeast: FAC (taxonomic lump from wetland indicator species)
  • Northcentral & Northeast: FACW (taxonomic lump from wetland indicator species)

Heliophily : 8

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image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Alan M. Cressler | Original Image ⭷
image of plant© Janet Wright, some rights reserved (CC BY-NC), uploaded by Janet Wright source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Janet Wright, some rights reserved (CC BY-NC), uploaded by Janet Wright source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Bruce A. Sorrie | Original Image ⭷
image of plant© Janet Wright, some rights reserved (CC BY-NC), uploaded by Janet Wright source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Janet Wright, some rights reserved (CC BY-NC), uploaded by Janet Wright source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Janet Wright, some rights reserved (CC BY-NC), uploaded by Janet Wright source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Janet Wright, some rights reserved (CC BY-NC), uploaded by Janet Wright source CC-BY-NC, permission granted to NCBG | Original Image ⭷

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Horticultural Information

NCBG trait

Intro: Erect, tufted perennial with grass-like leaves found in dry, sandy or rocky woodlands, clearings, roadsides and dunes; occasionally in damp, open habitats.

Stems: Stem flattened and narrowly winged, branching and some sometimes bending at 1 or 2 nodes, smooth, the base lacking fibrous remains of old leaves (see S. nashii). .

Leaves: Leaves mostly basal, overlapping, linear and grass-like, to 14 in. long, firm and pale bluish-green.

Inforescence:

Flowers: Flowers in single small cluster (usually 2 flowers) at top of scape, blue-violet, 1/2-3/4 in. wide, consisting of 6 spreading tepals with rounded or notched tips and bearing a tiny tooth-like extension. Yellow markings at the base of each tepal create a yellow center in the blue "star."

Fruits: Fruit a round capsule.

Comments:

Height: 8-18 in.

plant sale text: This handsome perennial is actually not a grass at all, but rather shares the same family as Iris. The leaves of both Sisyrinchium and Iris overlay each other in a parallel fashion. Atlantic blue-eyed- grass grows into handsome grass-like clumps that produce numerous ¾-inch blue flowers with yellow centers on upright stems. The bluish-green foliage of Atlantic blue-eyed-grass gives it an attractive quality throughout the growing season even after the blooms fade.

bloom table text:

description: Erect, tufted perennial with grass-like leaves found in dry, sandy or rocky woodlands, clearings, roadsides and dunes; occasionally in damp, open habitats.

stems: Stem flattened and narrowly winged, branching and some sometimes bending at 1 or 2 nodes, smooth, the base lacking fibrous remains of old leaves (see S. nashii). .

leaves: Leaves mostly basal, overlapping, linear and grass-like, to 14 in. long, firm and pale bluish-green.

inflorescence:

flowers: Flowers in single small cluster (usually 2 flowers) at top of scape, blue-violet, 1/2-3/4 in. wide, consisting of 6 spreading tepals with rounded or notched tips and bearing a tiny tooth-like extension. Yellow markings at the base of each tepal create a yellow center in the blue "star."

fruits: Fruit a round capsule.

comments:

cultural notes:

germination code:

native range: eastern North America

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