Carex sprengelii

Dewey ex Sprengel

Syst. Veg. 3: 827. 1826.

Common names: Sprengel’s sedge long-beaked sedge carex de Sprengel
IllustratedEndemic
Synonyms: Carex longirostris Torrey
Treatment appears in FNA Volume 23. Treatment on page 473. Mentioned on page 255, 461, 462.

Plants with short-creeping rhizomes, loosely cespitose, forming colonies. Culms brown at base, densely covered with brown fibrillose remains of previous year’s leaves; flowering-stems 30–90 cm, longer than leaves at maturity, 0.5–0.7 mm thick, glabrous but finely scabrous within inflorescence. Leaves: sheaths glabrous, basal ones tinged with brown and all bearing blades, green to hyaline on back, white-hyaline on front; blades flat, 2.5–4 mm wide, finely scabrous on adaxial surface and margins, glabrous on abaxial surface. Inflorescences: peduncles of lateral spikes slender, 20–60 mm, equaling or somewhat longer than spikes, finely scabrous; peduncle of terminal spike 5–15 mm, scabrous; proximal bracts equaling inflorescences or more often shorter; sheaths 3–5 mm or rarely longer; blades 1–1.5 mm wide. Lateral spikes 4–5, 1 per node; proximal spikes well separated, nodding or drooping at maturity, pistillate with 10–40 perigynia about 1 mm apart, cylindric, 10–35 × 8–10 mm; distal spikes crowded near apex, sessile or nearly so, staminate or androgynous, linear, less than 20 mm. Terminal spike staminate or rarely with a few perigynia at base, 10–20 × 1.5–2 mm. Pistillate scales pale hyaline tinged with chestnut, narrow midrib green, sometimes finely scabrous, ovateoblong, shorter than mature perigynia, apex long-acuminate, glabrous. Perigynia shiny tan to golden green, 2-ribbed, but otherwise veinless, closely enveloping achene at maturity, ovoid-ellipsoid, 4.5–6.5 × 1.5–2 mm, membranous, base acute, apex abruptly contracted to beak, glabrous; beak bidentate, narrowly tubular, nearly as long as body, finely scabrous on edge, teeth hyaline, 1 mm. Achenes substipitate, 2–2.5 × 1.7–1.8 mm. 2n = 42.


Phenology: Fruiting early to mid summer.
Habitat: Dry to mesic deciduous forests and forest openings, floodplain forests and riverbanks, lakeshores, limestone river bluffs, mixed conifer-hardwood forests, thickets, meadows, roadsides, often associated with calcareous rocks and soils

Distribution

V23 868-distribution-map.jpg

Alta., B.C., Man., N.B., Ont., Que., Sask., Colo., Conn., Del., Ill., Ind., Iowa, Maine, Mass., Mich., Minn., Mo., Mont., Nebr., N.H., N.J., N.Y., N.Dak., Pa., S.Dak., Vt., Wis., Wyo.

Discussion

Selected References

None.

Lower Taxa

None.

"thick" is not a number.

... more about "Carex sprengelii"
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
trigonous +
1.7mm;1.8mm +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
membranous +
1.5mm;2mm +
Marcia J. Waterway +
Dewey ex Sprengel +
shortened +
white-hyaline;green;hyaline +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
acute +  and ovoid-ellipsoid +
membranous +
1.5mm;2mm +
Hymenochlaenae +
1/2 length of body +
tubular +  and bidentate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
m--shaped +
1mm;1.5mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
Sprengel’s sedge +, long-beaked sedge +  and carex de Sprengel +
round +  and trigonous +
staminate +, nearly +  and sessile +
0 cm0 mm <br />0 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Alta. +, B.C. +, Man. +, N.B. +, Ont. +, Que. +, Sask. +, Colo. +, Conn. +, Del. +, Ill. +, Ind. +, Iowa +, Maine +, Mass. +, Mich. +, Minn. +, Mo. +, Mont. +, Nebr. +, N.H. +, N.J. +, N.Y. +, N.Dak. +, Pa. +, S.Dak. +, Vt. +, Wis. +  and Wyo. +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
30 cm300 mm <br />0.3 m <br /> (90 cm900 mm <br />0.9 m <br />) +
biconvex +  and trigonous +
Dry to mesic deciduous forests and forest openings, floodplain forests and riverbanks, lakeshores, limestone river bluffs, mixed conifer-hardwood forests, thickets, meadows, roadsides, often associated with calcareous rocks and soils +
nodding +  and erect +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
entire +  and bidentate +
somewhat longer +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
veinless +  and pistillate +
tan +  and golden green +
mature +  and maturity +
ascending +  and erect +
1 cm10 mm <br />0.01 m <br /> (?) +
Fruiting early to mid summer. +
2-3(-4)-carpellate +
, +, suffused with maroon or suffused with chestnut-brown +, white +  and hyaline +
3 (?) +  and 1 (?) +
apart +  and separated +
1 cm10 mm <br />0.01 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
drooping +  and nodding +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
fibrillose +
adventitious +
tinged with chestnut +  and pale hyaline +
basal +  and proximal +
2-keeled +
cylindric +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Illustrated +  and Endemic +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex longirostris +
Carex sprengelii +
Carex sect. Hymenochlaenae +
species +
rarely +  and staminate +
androgynous +  and gynecandrous +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
1 cm10 mm <br />0.01 m <br /> (?) +
plant +  and cespitose +
pubescent +  and glabrous +
not septate-nodulose +