Carex mariposana

L. H. Bailey ex Mackenzie

Bull. Torrey Bot. Club 43: 619. 1917.

IllustratedEndemic
Synonyms: Carex paucifructus Mackenzie
Treatment appears in FNA Volume 23. Treatment on page 351. Mentioned on page 343, 344, 350.

Plants densely cespitose. Culms 20–91 cm. Leaves: sheaths adaxially white-hyaline, sometimes gold tinged near summit, summit U-shaped or zigzag to rounded, prolonged to 3 mm beyond collar; distal ligules 1.5–4 mm; blades 3–4 per fertile culm, to 7–30 cm × 1.6–3.9 mm. Inflorescences dense or open, gold to brown, occasionally beaded, 1.7–4.8 cm × 6–16 (–23) mm; proximal internode 3.5–7.5 mm; 2d internode 2–5.5 mm, these 2 internodes collectively more than 1/3 as long as inflorescences; proximal bracts usually bristlelike, shorter than inflorescences. Spikes (3–) 5–12, distant, loosely aggregated, ovoid to broadly ovoid, 6–14.5 × 2.5–9.2 mm, base rounded to attenuate, apex truncate, rounded, or sometimes tapered. Pistillate scales gold to brown and often reddish, with whitish or green midstripe, ovate to broadly ovate, (2.5–) 3.5–4.7 mm, usually shorter than and narrower or as wide as perigynia, margin white, 0–0.2 mm wide, apex obtuse to acuminate. Perigynia ascending, green or straw colored to coppery, conspicuously 6–11-veined abaxially, (0–) 4–5 (–8) -veined adaxially, veins reaching top of achene, lanceovate to ovate, planoconvex or biconvex, 3.4–4.8 (–5.3) × 1.1–1.6 (–2.2) mm, 0.4–0.65 mm thick, margin flat, including wing 0.15–0.4 mm wide, ciliate-serrulate at least on distal body; beak gold to brown, usually reddish, at tip, cylindric, unwinged, ± entire for 0.5–0.6 mm, abaxial suture inconspicuous or with conspicuous white margin, distance from beak tip to achene 1.5–2.5 mm. Achenes elliptic to ovate or, rarely, broadly ovate, 1.5–2 × 0.9–1.3 mm, 0.4–0.6 mm thick.


Phenology: Fruiting summer.
Habitat: Moist mountain meadows and slopes
Elevation: 1200–3200 m

Discussion

Most material from Idaho reported as Carex mariposana is C. abrupta; plants in at least two Idaho localities very closely resemble C. mariposana.

Selected References

None.

Lower Taxa

None.

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

... more about "Carex mariposana"
with conspicuous white margin +  and inconspicuous +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
ovate;,;elliptic;ovate +
smaller +
0.4mm +  and 0.6mm +
bidentatate +
papillose +
Joy Mastrogiuseppe +, Paul E. Rothrock +, A. C. Dibble +  and A. A. Reznicek +
L. H. Bailey ex Mackenzie +
shortened +
persistent +
rounded +  and attenuate +
not enlarged +
Reddish (?) +, Gold (?) +  and Brown (?) +
cylindric +
7 cm70 mm <br />0.07 m <br /> (30 cm300 mm <br />0.3 m <br />) +
3 (?) +  and 4 (?) +
v--shaped +
1.6mm;3.9mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
round +  and trigonous +
20 cm200 mm <br />0.2 m <br /> (91 cm910 mm <br />0.91 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Calif. +  and Nev. +
1200–3200 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Moist mountain meadows and slopes +
1.6 cm16 mm <br />0.016 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
gold +  and brown +
/3 +, 1 +  and 2 +
0.2 cm2 mm <br />0.002 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
not prophyllate +, sessile +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
conspicuous +
0.15mm +  and 0.4mm +
green +  and whitish +
with (1-)3-6(-30) bristles and/or scales +
(0-)4-5(-8)-veined +  and 6-11-veined +
straw colored +  and coppery +
Fruiting summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.75 cm7.5 mm <br />0.0075 m <br />) +
Bull. Torrey Bot. Club +
adventitious +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
gold +  and brown and often reddish +
basal +  and proximal +
ovate;broadly ovate +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.47 cm4.7 mm <br />0.0047 m <br />) +
as-wide-as perigynia;narrower +
herbaceous +  and membranous +
not differentiated +
cylindric +
Illustrated +  and Endemic +
aggregated +  and distant +
0.6 cm6 mm <br />0.006 m <br /> (1.45 cm14.5 mm <br />0.0145 m <br />) +
ovoid;broadly ovoid +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.92 cm9.2 mm <br />0.0092 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +  and persistent +
2-3(-4)-fid +
zigzag to rounded , prolonged 0-3 mm beyond collar +  and u--shaped +
Carex paucifructus +
Carex mariposana +
Carex sect. Ovales +
species +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.065 cm0.65 mm <br />6.5e-4 m <br />) +
plant +  and cespitose +