Compilation
Carex sitchensis

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Name

Identification
Carex aquatilis Wahlenberg [family CYPERACEAE ] (stored under name); Verified by L. A. Standley, Carex sitchensis J. D. Prescott [family CYPERACEAE ] Verified by J. D. Prescott, 1832
Related name
  • Carex sitchensis
  • Carex aquatilis

Flora

Entry for Carex aquatilis Wahlenberg var. dives (T. Holm) Kükenthal [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 aquatilis Wahlenberg var. dives (T. Holm) Kükenthal [family CYPERACEAE], in H. G. A. Engler, Pflanzenr., 28[IV,20]: 311. 1909
Carex dives T. Holm [family CYPERACEAE], Amer. J. Sci., 167: 312, figs. 8, 9. 1904
Carex howellii L. H. Bailey [family CYPERACEAE]
Carex panda C. B. Clarke [family CYPERACEAE]
Carex sitchensis Prescott ex Bongard [family CYPERACEAE]
Treatment Author(s)
Peter W. Ball
A. A. Reznicek
Information
Culms 35–150 cm, angles scabrous. Leaves: basal sheaths leafless, usually red-brown; blades epistomic, 5–18 mm wide, adaxially papillose. Inflorescences: peduncle of proximal spike to 11 cm; proximal bract longer than inflorescence, 3–10 mm wide. Spikes pendent or the terminal usually erect; proximal 3–6 spikes pistillate, 4.5–11.5 cm × 4–7 mm, base attenuate; terminal 2–4 spikes staminate. Pistillate scales red-brown or purple-brown. Perigynia pale brown, ellipsoid, 1.9–3.5 × 1–1.2 mm, apex acute or obtuse; beak purple-brown, 0.3–0.4 mm, papery. 2n = 72, 74, 78, 80.
Phenology Fruiting
jul
summer
aug
Altitude range
0–900 m;
Distribution
USA AlaskaUSA Calif.USA Mont.USA Oreg.USA Wash.Canada B.C.
Discussion
Carex aquatilis var. dives is the most robust variety of C. aquatilis and the only member to have pendent spikes, ellipsoid perigynia, and epistomic leaves. Carex aquatilis var. dives intergrades with var. aquatilis and does not appear to be distinct at the specific level. It may hybridize with C. lyngbyei.

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