Carex petricosa var. petricosa

Illustrated
Synonyms: Carex franklinii Boott Carex lepageana Raymond Carex magnursina Raymond
Treatment appears in FNA Volume 23. Treatment on page 478. Mentioned on page 479.

Culms to 90 cm. Stigmas mostly 3. Achenes mostly trigonous in 1/2 pistillate flowers and fruits.


Phenology: Fruiting summer.
Habitat: Meadows, screes, disturbed slopes, flood plains, stream banks
Elevation: 100–2800 m

Distribution

V23 877-distribution-map.jpg

Alta., B.C., N.W.T., Yukon, Alaska, Mont., c, n, ne Asia

Discussion

As defined here, Carex petricosa var. petricosa includes the Asian species C. macrogyna Turczaninow ex Steudel. T. V. Egorova (1999) stated that C. macrogyna has a staminate terminal spike, while C. petricosa var. petricosa has an androgynous terminal spike. In North America, C. petricosa var. petricosa has the terminal spike staminate or androgynous.

A report of the Asian species Carex stenocarpa Turczaninow ex V. I. Kreczetowicz from western Alaska is referable to this taxon.

Selected References

None.

Lower Taxa

None.
0.17 cm1.7 mm <br />0.0017 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
trigonous +
smaller +
1mm;1.3mm +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Peter W. Ball +  and Joy Mastrogiuseppe +
shortened +
tapered +  and rounded +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
straight +
indistinct +
bidentate +
0 cm0 mm <br />0 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
v--shaped +
0.5 cm5 mm <br />0.005 m <br /> (?) +  and 14 cm140 mm <br />0.14 m <br /> (?) +
1mm;3.5mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
round +  and trigonous +
0 cm0 mm <br />0 m <br /> (90 cm900 mm <br />0.9 m <br />) +
2 cm20 mm <br />0.02 m <br /> (?) +
Alta. +, B.C. +, N.W.T. +, Yukon +, Alaska +, Mont. +, c +, n +  and ne Asia +
100–2800 m +
hypogynous +  and subtending +
biconvex +  and trigonous +
Meadows, screes, disturbed slopes, flood plains, stream banks +
12 cm120 mm <br />0.12 m <br /> (22 cm220 mm <br />0.22 m <br />) +
3 cm30 mm <br />0.03 m <br /> (12 cm120 mm <br />0.12 m <br />) +
staminate +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
black +, brown +  and pale-yellow +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.55 cm5.5 mm <br />0.0055 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 /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
Fruiting summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
1 cm10 mm <br />0.01 m <br /> (6 cm60 mm <br />0.06 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (3 cm30 mm <br />0.03 m <br />) +
pendent +  and inclined +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
scale-like +  and filiform +
Amer. J. Sci. Arts +
adventitious +
staminate +  and pistillate +
black +  and brown +
0.31 cm3.1 mm <br />0.0031 m <br /> (0.62 cm6.2 mm <br />0.0062 m <br />) +
basal +  and proximal +
oblong-obovate +
1mm;3mm +
subglabrous +
2.5 cm25 mm <br />0.025 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
cylindric +
0.5 cm5 mm <br />0.005 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
Illustrated +
0 cm0 mm <br />0 m <br /> (8 cm80 mm <br />0.08 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex franklinii +, Carex lepageana +  and Carex magnursina +
Carex petricosa var. petricosa +
Carex petricosa +
variety +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
stoloniferous +  and rhizomatous +
plant +  and cespitose +