Carex projecta

Mackenzie

Bull. Torrey Bot. Club 35: 264. 1908.

Common names: Carex à bec étalé
IllustratedEndemic
Treatment appears in FNA Volume 23. Treatment on page 364. Mentioned on page 255, 336, 368.

Plants densely cespitose. Culms 50–90 cm; vegetative culms with numerous leaves spaced evenly along distal 1/2. Leaves: sheaths adaxially green-veined nearly to collar with V-shaped hyaline band extending 4–20 mm proximal to collar, somewhat loose, expanded near summit, ± wing-angled, adaxially firm, summits thin, U-shaped to rounded, sometimes shortly prolonged beyond collar; distal ligules 4–9 mm; blades 3–6 per fertile culm, 18–40 cm × 3–7 mm. Inflorescences nodding, open at least proximally, pale-brown, 2.5–6 cm × 7–14 mm; proximal internode 5–12 (–18) mm; 2d internode 3–11 mm; proximal bracts scalelike, sometimes bristlelike to 3 cm. Spikes 8–15, proximal spikes well spearated, nearly globose, 9–12 × 6–8 (–9) mm, base tapered, apex rounded. Pistillate scales white to brown with brown or green midstripe not reaching tip, oblong-lanceolate to oblongovate, 2–2.7 × 0.9–1.5 mm, shorter and narrower than perigynia, apex obtuse to nearly acute. Perigynia usually 15–30 per spike, ascending to reflexed, with divergent beak, pale-brown; conspicuously (3–) 5–8-veined abaxially, conspicuously 3–6-veined adaxially, lanceolate, flat to planoconvex, thin, 2.9–4.3 × 1.2–1.6 mm, 0.3 mm thick, margin flat, including wing 0.2 mm wide; beak sometimes redbrown at tip, flat, ciliate-serrulate, distance from beak tip to achene 1.6–2.4 mm. Achenes ovate to oblong, 1.1–1.7 × 0.6–1 mm, 0.3 mm thick. 2n = 64.


Phenology: Fruiting early–mid summer.
Habitat: Stream banks, moist depressions in mixed and deciduous forests, moist to wet grasslands, meadows, thickets, shores, ditches
Elevation: 10–400 m

Distribution

V23 639-distribution-map.jpg

Man., N.B., Nfld. and Labr., Ont., P.E.I., Que., Sask., Conn., Ill., Ind., Iowa, Maine, Md., Mass., Mich., Minn., N.H., N.J., N.Y., N.C., Ohio, Pa., R.I., Vt., Va., W.Va., Wis.

Discussion

In many respects Carex projecta is intermediate between C. cristatella and C. tribuloides; it is sometimes difficult to distinguish from those species. However, when all three species occur together, C. projecta flowers and fruits first, C. tribuloides later, and C. cristatella latest of all. When C. projecta is in mature fruit, C. cristatella will be just past flowering.

See note under 146. Carex longii.

Selected References

None.

Lower Taxa

None.

"thin" is not a number."+timesaslongasinflorescences" is not declared as a valid unit of measurement for this property.

... more about "Carex projecta"
ovate;oblong +
smaller +
0.3 +  and 1.1-1.7×0.6-1 +
bidentatate +
papillose +
Joy Mastrogiuseppe +, Paul E. Rothrock +, A. C. Dibble +  and A. A. Reznicek +
Mackenzie +
shortened +
v--shaped +
persistent +
tapered +
not enlarged +
ciliate-serrulate +
18 cm180 mm <br />0.18 m <br /> (40 cm400 mm <br />0.4 m <br />) +
3 (?) +  and 6 (?) +
v--shaped +
3mm;7mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
Carex à bec étalé +
fertile +  and vegetative +
round +  and trigonous +
50 cm500 mm <br />0.5 m <br /> (90 cm900 mm <br />0.9 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Man. +, N.B. +, Nfld. and Labr. +, Ont. +, P.E.I. +, Que. +, Sask. +, Conn. +, Ill. +, Ind. +, Iowa +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, N.H. +, N.J. +, N.Y. +, N.C. +, Ohio +, Pa. +, R.I. +, Vt. +, Va. +, W.Va. +  and Wis. +
10–400 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Stream banks, moist depressions in mixed and deciduous forests, moist to wet grasslands, meadows, thickets, shores, ditches +
0.3 cm3 mm <br />0.003 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
not prophyllate +, sessile +  and pistillate +
basal +  and cauline +
green +  and brown +
with (1-)3-6(-30) bristles and/or scales +
3-6-veined +  and (3-)5-8-veined +
ascending +  and reflexed +
0.3 +  and 2.9-4.3×1.2-1.6 +
Fruiting early–mid summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
0 cm0 mm <br />0 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
0.9 cm9 mm <br />0.009 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Bull. Torrey Bot. Club +
adventitious +
white +  and brown +
0.2 cm2 mm <br />0.002 m <br /> (0.27 cm2.7 mm <br />0.0027 m <br />) +
basal +  and proximal +
oblong-lanceolate +
shorter and narrower;0.9mm;1.5mm +
herbaceous +  and membranous +
not differentiated +
wing-angled +
expanded +
Illustrated +  and Endemic +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +  and persistent +
2-3(-4)-fid +
prolonged +
u-shaped +  and rounded +
Carex projecta +
Carex sect. Ovales +
species +
0.3 +  and 2.9-4.3×1.2-1.6 +
plant +  and cespitose +