Carex brainerdii

Mackenzie

Bull. Torrey Bot. Club 40: 534. 1913.

IllustratedEndemic
Treatment appears in FNA Volume 23. Treatment on page 535. Mentioned on page 529, 533.

Plants densely to loosely cespitose; rhizomes arching, dark reddish-brown, 0–5 mm, slender. Culms 6–34 cm, scabrous distally; bases weakly or not fibrous. Leaf-blades pale green or glaucous, equaling or usually exceeding stems, 1.8–3.8 mm wide, coriaceous, glabrous abaxially, glabrous or scabrous adaxially. Inflorescences with both staminate and pistillate spikes; peduncles of basal spikes erect, short, stout; peduncles of terminal staminate spikes 2–2.5 mm; proximal nonbasal bracts leaflike, equaling or slightly exceeding inflorescences. Spikes: proximal pistillate spikes 2–6 (basal spikes 1–4); cauline spikes overlapping, with 1–4 perigynia; terminal staminate spikes 5.8–12.7 × 1.5–2.2 mm. Scales: pistillate scales reddish-brown, with similarly colored or narrow white margins, ovate, 3.6–6 × 1.2–2.2 mm, apex cuspidate to acuminate (awned on some basal spikes); staminate scales lanceolate, 3.7–5.9 × 1.4–2.2 mm, apex acute to acuminate. Anthers 2.3–3.3 mm. Perigynia green, often with reddish-brown tinge, 12–15veined, conspicuous to at least mid body, ellipsoid, 4–5.3 × 1.4–2.2 mm; beak often bent, occasionally straight, pale green, 0.8–1.9 mm, ciliate-serrulate, apical teeth 0.2–0.5 mm. Stigmas 3. Achenes brown, ellipsoid, obtusely trigonous in cross-section, 2.1–2.6 × 1.3–2.1 mm.


Phenology: Fruiting late May–late Jul.
Habitat: Dry, rocky, open coniferous woodlands on mountains
Elevation: 600–2800 m

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Carex brainerdii"
0.21 cm2.1 mm <br />0.0021 m <br /> (0.26 cm2.6 mm <br />0.0026 m <br />) +
trigonous;ellipsoid +
1.3mm;2.1mm +
0.23 cm2.3 mm <br />0.0023 m <br /> (0.33 cm3.3 mm <br />0.0033 m <br />) +
beaked +, awned +  and cuspidate +
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 +
shortened +
rounded +  and tapering +
not fibrous +
ciliate-serrulate +
straight +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.19 cm1.9 mm <br />0.0019 m <br />) +
v--shaped +
2mm;4.5mm +
reddish-brown tinge +
conspicuous +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
brown +  and red +
round +  and trigonous +
6 cm60 mm <br />0.06 m <br /> (34 cm340 mm <br />0.34 m <br />) +
Calif. +  and Oreg. +
600–2800 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Dry, rocky, open coniferous woodlands on mountains +
prophyllate +, pedunculate +, staminate +, , +  and pistillate +
scabrous +, glabrous +  and glaucous +
usually exceeding stems +  and equaling +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
white +, narrow +  and colored +
with (1-)3-6(-30) bristles and/or scales +
stipitate +, veinless +  and veined +
0.4 cm4 mm <br />0.004 m <br /> (0.53 cm5.3 mm <br />0.0053 m <br />) +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
Fruiting late May–late Jul. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
scale-like +  and filiform +
slightly exceeding inflorescences +  and equaling +
Bull. Torrey Bot. Club +
dark reddish-brown +
0 cm0 mm <br />0 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
adventitious +
staminate +  and pistillate +
reddish-brown +
0.37 cm3.7 mm <br />0.0037 m <br /> (0.59 cm5.9 mm <br />0.0059 m <br />) +
basal +  and proximal +
lanceolate;ovate +
1.4mm;2.2mm +
cylindric +
Illustrated +  and Endemic +
pistillate +  and staminate +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex sect. Montanae +
Carex brainerdii +
Carex sect. Acrocystis +
species +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
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 +