Carex ramenskii

Komarov

Repert. Spec. Nov. Regni Veg. 13: 164. 1914.

Illustrated
Synonyms: Carex ramenksii var. caudata Hultén Carex salina subsp. ramenskii (Komarov) T. V. Egorova Carex salina var. tristigmatica Kükenthal Carex subspathacea subsp. ramenskii (Komarov) T. V. Egorova
Treatment appears in FNA Volume 23. Mentioned on page 383.
Revision as of 01:00, 30 July 2020 by imported>Volume Importer
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Plants not cespitose. Culms obtusely or acutely angled, 10–50 cm, glabrous. Leaves: basal sheaths brown; sheaths of proximal leaves glabrous, fronts lacking spots and veins, apex U-shaped; blades usually amphistomic, 2–4 mm wide, papillose or smooth. Proximal bract equal to or longer than inflorescence, 1.5–3.5 mm wide. Spikes erect; staminate 1–2; pistillate 1–4; proximal pistillate spike 1.6–2.4 cm × 4–7 mm, base cuneate or attenuate. Pistillate scales dark purple-brown; 2–5.5 × 1.2–1.8 mm (including awn), narrower than perigynia, midvein reaching apex or not, 1/10–1/2 the width of scale, apex acute to acuminate, rarely aristate, awn glabrous or scabrous. Perigynia ascending, pale-brown, obscurely veined or with a few prominent veins on each face, somewhat inflated, loosely enclosing achenes, ovoid to ellipsoid, 2.7–3.5 × 1.6–2.4 mm, leathery, dull, base rounded, apex acute, glabrous; beak widely conic and almost continuing body of perigynium, 0.1–0.2 (–0.3) × 0.30–0.45 mm, entire. Achenes entire or strongly constricted on 1 face, or irregularly constricted on margins, apex truncate to retuse, dull; style base straight, sometimes bent. 2n = 80 (ne Russia).


Phenology: Fruiting Jun–Aug.
Habitat: Saline or brackish marshes, shores
Elevation: 0–10 m

Discussion

Carex ramenskii seems to be the northwestern counterpart of C. salina and is thought to be a stabilized hybrid between C. lyngbyei and C. subspathacea. It has not been recorded outside of the common range of the two supposed parents. Plants identified as C. ramenskii from Alaska and Northwest Territories attributed to C. ramenskii are mostly C. subspathacea. Carex ramenskii represents part of the northwestern reports of C. salina var. and subsp. cuspidata. Plants with awned pistillate scales (var. caudata) occur throughout the range of the species and are considered extremes of variation. Intermediate (or backcross) specimens with the supposed parental species, C. lyngbyei × C. ramenskii, are known as C. ×cryptochlaena T. Holm.

Selected References

None.

Lower Taxa

None.

"shortened" is not a number."narrower" is not a number.

... more about "Carex ramenskii"
biconvex +
constricted +
, +  and papillose +
truncate;retuse +
acute;acuminate +
Lisa A. Standley +, Jacques Cayouette +  and Leo Bruederle +
Komarov +
scabrous +  and glabrous +
not +  and fibrous +
rounded +, attenuate +  and cuneate +
bidentate +  and emarginate +
smooth +  and papillose +
m--shaped +  and v--shaped +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
redbrown +  and brown +
10 cm100 mm <br />0.1 m <br /> (50 cm500 mm <br />0.5 m <br />) +
prophyllate +, subsessile +, pedunculate +  and staminate +
Yukon +, Alaska +  and Asia +
0–10 m +
constricted +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Saline or brackish marshes, shores +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
with (1-)3-6(-30) bristles and/or scales +
with a few prominent veins +  and veined +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
0.1mm +  and 0.2mm +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.045 cm0.45 mm <br />4.5e-4 m <br />) +
0.27 cm2.7 mm <br />0.0027 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
Fruiting Jun–Aug. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
short-sheathing +, sheathless +  and leaflike +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Repert. Spec. Nov. Regni Veg. +
adventitious +
dark purple-brown +
basal +  and proximal +
2-keeled +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
ladder-fibrillose +  and veined +
cylindric +
Illustrated +
pistillate +  and staminate +
1.6 cm16 mm <br />0.016 m <br /> (2.4 cm24 mm <br />0.024 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
1 +  and 3 +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex ramenksii var. caudata +, Carex salina subsp. ramenskii +, Carex salina var. tristigmatica +  and Carex subspathacea subsp. ramenskii +
Carex ramenskii +
Carex sect. Phacocystis +
species +
, +  and staminate +
Few (?) +  and Lacking (?) +
plant +  and not cespitose +