Compilation
Carex bicknellii

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Name

Identification
Carex bicknellii Britton [family CYPERACEAE ] (stored under name); Verified by P. E. Rothrock & A. A. Reznicek, 2001 Carex straminea Willdenow ex Schkuhr [family CYPERACEAE ] Verified by Boott, 1862 Carex bicknellii Britton [family CYPERACEAE ] Verified by M. L. Fernald, Carex bicknellii Britton [family CYPERACEAE ] Verified by K. K. Mackenzie,
Related name
  • Carex opaca
  • Carex missouriensis
  • Carex bicknellii
  • Carex straminea
Common name
  • Carex à gaine tronguée, Flora of North America Vol. 23

Flora

Entry for Carex annectens ( E. P. Bicknell) E. P. Bicknell [family CYPERACEAE]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 23,
Names
Carex annectens ( E. P. Bicknell) E. P. Bicknell [family CYPERACEAE], Bull. Torrey Bot. Club, 35: 492. 1908
Carex xanthocarpa E. P. Bicknell [not Degland 1807] var. annectens E. P. Bicknell [family CYPERACEAE], Bull. Torrey Bot. Club, 23: 23. 1896
Carex annectens var. ambigua (Barratt ex Boott) Gleason [family CYPERACEAE]
Carex annectens var. xanthcarpa (Kükenthal) Wiegand [family CYPERACEAE]
Carex bicknellii Camus [family CYPERACEAE], 1910. not Britton 1896
Carex brachyglossa Mackenzie [family CYPERACEAE]
Carex setacea Dewey var. ambigua (Barratt ex Boott) Fernald [family CYPERACEAE]
Treatment Author(s)
Peter W. Ball
A. A. Reznicek
Information
Culms to 75 cm × 2 mm, scabrous. Leaves: sheath fronts indistinctly spotted pale brown or red, apex convex, membranous, rugose; ligule rounded, to 3 mm, free limb to 0.2 mm; blades 60 cm × 5 mm, shorter than flowering stem. Inflorescences spicate, 4–7 cm × 15 mm, with 10–15 branches, proximal usually distinct; proximal internodes to 1.5 cm; bracts setaceous, proximal 1–3 conspicuous, distal bracts scalelike. Scales hyaline, red-brown with narrow colorless margins, awn to 1.5 mm. Perigynia golden brown, 3-veined abaxially, body broadly elliptic to ovate, 2.2–3 × 1.5–2.2 mm, base rounded; beak 0.5–1.2 mm, 1/3 length of body. Achenes red-brown, circular, 1.2–1.5 × 1–1.2 mm, glossy.
Phenology Fruiting
jul
summer
aug
Altitude range
0–1500 m;
Distribution
USA Ark.USA Conn.USA Del.USA D.C.USA Ill.USA Ind.USA IowaUSA Kans.USA Ky.USA La.USA MaineUSA Md.USA Mass.USA Mich.USA Minn.USA Miss.USA Mo.USA Nebr.USA N.H.USA N.J.USA N.Y.USA N.C.USA OhioUSA Okla.USA Pa.USA R.I.USA S.C.USA Tenn.USA Vt.USA Va.USA W.Va.USA Wis.Canada Ont.Canada Que.
Discussion
Carex annectens is similar in appearance to C. vulpinoidea, but can readily be distinguished by the flowering stems longer than the leaves and the orange-yellow perigynia that are usually ovate to suborbicular and short-beaked. Furthermore, that species is ecologically distinct and grows in open, dry to moist soils; C. vulpinoidea prefers wetter soils. It may be closely related to C. triangularis, which differs in having wider perigynia with red crystalline inclusions. Some authors recognize two taxa within the species (C. annectens var. annectans and var. xanthocarpa), distinguished by differences in perigynium color, inflorescence compactness, and pistillate scale awn length. All those characters appear to vary independently and within the same plant. Further detailed study may clarify patterns of biological variation within the taxon.

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