Carex tonsa var. rugosperma

(Mackenzie) Crins

Novon 6: 118. 1996.

Common names: Carex à fruits rugueux
IllustratedEndemic
Basionym: Carex rugosperma Mackenzie Bull. Torrey Bot. Club 42: 621. 1915
Treatment appears in FNA Volume 23. Treatment on page 539. Mentioned on page 536.

Leaf-blades bright green, much longer than culms, herbaceous, scabrous to papillose adaxially. Perigynia pubescent on beak and body.


Phenology: Fruiting mid Apr–late Jun.
Habitat: Open, dry, acidic, sandy and rocky meadows, roadsides, dunes, ridges, heathlands, savannas, pine, oak, and poplar woodland edges
Elevation: 50–1000 m

Distribution

V23 1013-distribution-map.jpg

Man., N.S., Ont., Que., Sask., Conn., Ga., Ill., Ind., Maine, Md., Mass., Mich., Minn., N.H., N.J., N.Y., N.C., Ohio, Pa., S.C., Vt., W.Va., Wis.

Discussion

Carex tonsa var. rugosperma has long been known as C. rugosperma but C. tonsa has priority. The two varieties of C. tonsa may occur together; intermediates are found occasionally. Plants with virtually glabrous perigynia may have long, scabrous leaves. Plants with a pubescent perigynia apparently never have coriaceous, short, and nearly smooth leaves.

Selected References

None.

Lower Taxa

None.
0.16 cm1.6 mm <br />0.0016 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
trigonous;ellipsoid;obovoid +
1.2mm;1.6mm +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.29 cm2.9 mm <br />0.0029 m <br />) +
beaked +, awned +  and cuspidate +
reddish-brown tinge +
glabrous +  and pubescent +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
William J. Crins +  and Jeff H. Rettig +
(Mackenzie) Crins +
shortened +
rounded +  and tapering +
Carex rugosperma +
ciliate-serrulate +, smooth +  and 2-edged +
straight +
bidentate +  and bent +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
v--shaped +
2mm;4.5mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
Carex à fruits rugueux +
brown +  and red +
round +  and trigonous +
4 cm40 mm <br />0.04 m <br /> (16 cm160 mm <br />0.16 m <br />) +
Man. +, N.S. +, Ont. +, Que. +, Sask. +, Conn. +, Ga. +, Ill. +, Ind. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, N.H. +, N.J. +, N.Y. +, N.C. +, Ohio +, Pa. +, S.C. +, Vt. +, W.Va. +  and Wis. +
50–1000 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Open, dry, acidic, sandy and rocky meadows, roadsides, dunes, ridges, heathlands, savannas, pine, oak, and poplar woodland edges +
prophyllate +, pedunculate +, staminate +, , +  and pistillate +
scabrous;papillose +
coriaceous +  and herbaceous +
exceeding stems +  and equaling +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.43 cm4.3 mm <br />0.0043 m <br />) +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
with (1-)3-6(-30) bristles and/or scales +
green +  and pale-brown +
0.31 cm3.1 mm <br />0.0031 m <br /> (0.47 cm4.7 mm <br />0.0047 m <br />) +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
Fruiting mid Apr–late Jun. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
brown +  and reddish-brown +
ascending +  and erect +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
adventitious +
staminate +  and pistillate +
pale-brown +  and reddish-brown +
0.42 cm4.2 mm <br />0.0042 m <br /> (0.54 cm5.4 mm <br />0.0054 m <br />) +
basal +  and proximal +
ovate;ovate +
exceeding perigynia +  and equaling +
1.2mm;2.1mm +
cylindric +
Illustrated +  and Endemic +
staminate +  and pistillate +
0.45 cm4.5 mm <br />0.0045 m <br /> (1.13 cm11.3 mm <br />0.0113 m <br />) +
stout +  and slender +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex rugosperma var. tonsa +
Carex tonsa var. rugosperma +
Carex tonsa +
variety +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
stoloniferous +  and rhizomatous +
plant +  and cespitose +