familyCyperaceae
genusCarex
sectionCarex sect. Inflatae
speciesCarex subnigricans

Carex subnigricans

Stacey

Leafl. W. Bot. 2: 167. 1939.

Lisa A. Standley
IllustratedEndemic
Synonyms: Carex rachillis Maguire
Treatment appears in FNA Volume 23. Treatment on page 571. Mentioned on page 570.
Please click on the illustration for a higher resolution version.
Illustrator: Susan A. Reznicek

Copyright: Flora of North America Association

Rhizomes 1–1.5 mm thick. Culms 5–20 cm, 2–2.5 mm thick at base. Leaves: sheaths to 13 cm, fronts uniformly colorless or pale-brown; blades with inconspicuous median groove, not flattened, terete in cross-section, 5–12 cm × 0.4–10 mm, lacking conspicuous air cavities. Inflorescences 0.7–2 cm × 4–6 mm, staminate portion to 5 mm. Pistillate scales yellowbrown medially, 1-veined, equaling perigynia in width, usually shorter, apex obtuse or acute, not inrolled, awns absent. Anthers 1.5–2 mm. Perigynia veinless, stipitate, elliptic, 2.5–3.5 × 1.5 mm, tightly enclosing and distended by achene, base narrowly cuneate, apex acute; beak erose; rachilla shorter than fruit. Stigma 1.5–2.5 mm. Achenes sessile.


Phenology: Fruiting Sep.
Habitat: Moist rocky slopes, alpine meadows
Elevation: above 2500 m

Distribution

V23 1093-distribution-map.jpg

Idaho, Nev., Oreg., Utah, Wyo.

Discussion

Selected References

None.

Lower Taxa

None.

"shortened" is not a number.

... more about "Carex subnigricans"
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Achene architecture
sessile +
Achene shape
trigonous +
Anther fixation
basifixed +
Anther some measurement
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Apex architecture or shape
beaked +  and awned +
Apex character
width +
Apex height or length or size
shorter +
Apex pubescence
glabrous +
Apex reflectance
glossy +
Apex shape
acute;acute;obtuse +
Author
Lisa A. Standley +
Authority
Stacey +
Awn presence
absent +
Basal sheath texture
not fibrous +
Base shape
cuneate +
Beak architecture
entire +  and erose +
Beak architecture or relief
erose +
Beak some measurement
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Blade length
5 cm50 mm <br />0.05 m <br /> (12 cm120 mm <br />0.12 m <br />) +
Blade presence
absent +
Blade prominence
conspicuous +
Blade prominence or shape
flat +
Blade pubescence
glabrous +
Blade quantity
lacking +
Blade shape
terete +  and not flattened +
Blade width
0.04 cm0.4 mm <br />4.0e-4 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Bract architecture
glumaceous +  and foliaceous +
Bract architecture or shape
leaflike +
Bract arrangement
2-ranked +  and arranged +
Bract orientation
ascending +  and appressed +
Bract quantity
1;many +
Bract shape
scale-like +  and leaflike +
Branch atypical quantity
3 (4) +
Branch quantity
2;3 +
Bristle atypical quantity
6;30 +
Bristle quantity
3;6 +
Cauline leaf architecture or shape
folded +
Cauline leaf arrangement
parallel +  and divergent +
Cauline leaf arrangement or course or shape
linear +
Cauline leaf orientation
Ascending (?) +
Cauline leaf prominence or shape
flat +
Cauline leaf shape
terete +, rolled +  and plicate +
Culm coloration
brown +
Culm shape
round +  and trigonous +
Culm some measurement
5 cm50 mm <br />0.05 m <br /> (20 cm200 mm <br />0.2 m <br />) +
Culm thickness
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Distal scale architecture
empty +
Distribution
Idaho +, Nev. +, Oreg. +, Utah +  and Wyo. +
Elevation
above 2500 m +
Embryo position
basal +
Endosperm quantity
abundant +
Flower architecture
open +, pistillate +  and staminate +
Flower position
hypogynous +  and subtending +
Flower quantity
single +
Flower reproduction
unisexual +
Front coloration
pale-brown +  and colorless +
Fruits achene shape
biconvex +  and trigonous +
Habitat
Moist rocky slopes, alpine meadows +
Illustration
Present +
Illustration copyright
Flora of North America Association +
Illustrator
Susan A. Reznicek +
Inflorescence architecture
bractless +
Inflorescence length
0.7 cm7 mm <br />0.007 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Inflorescence position or structure subtype
terminal +
Inflorescence quantity
1 +
Inflorescence width
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Inflorescences panicle architecture
pseudoumbel +
Inflorescences panicle development
modified +
Leaf arrangement
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
Leaf position
basal +  and cauline +
Ligule presence
absent +
Locule quantity
1 +
Margin fusion
fused +
Margin shape
rounded +
Median groove prominence
inconspicuous +
Midvein fusion
distinct +
Number of lower taxa
0 +
Panicle arrangement
arranged +
Perianth life cycle
falling +
Perianth presence
absent +
Perianth quantity
with (1-)3-6(-30) bristles and/or scales +
Pericarp width
thin +
Perigynium architecture
stipitate +  and veinless +
Perigynium arrangement or shape
elliptic +
Perigynium atypical some measurement
0.4 cm4 mm <br />0.004 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
Perigynium l w ratio
2+ +
Perigynium length
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Perigynium orientation
spreading +
Perigynium position relational
enclosing +
Perigynium shape
Distended (?) +
Perigynium shape or vernation
not inrolled +
Perigynium some measurement
0.45 cm4.5 mm <br />0.0045 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Perigynium variability
equaling +
Perigynium width
1.5 cm15 mm <br />0.015 m <br /> (?) +
Phenology
Fruiting Sep. +
Pistil architecture
2-3(-4)-carpellate +
Pistil fusion
fused +
Pistil quantity
1 +
Portion architecture
staminate +
Portion some measurement
0 cm0 mm <br />0 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Prophyll architecture
pistillate +
Prophyll atypical quantity
0 (3) +
Prophyll position
subtending +
Prophyll quantity
3 (?) +  and 1 (?) +
Publication title
Leafl. W. Bot. +
Publication year
1939 +
Raceme arrangement
arranged +
Rachillum height or length or size
shorter +
Reference
None +
Rhizome thickness
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Root derivation
adventitious +
Root texture
fibrous +
Scale architecture
1-veined +  and pistillate +
Scale atypical quantity
6 (30) +
Scale coloration
yellowbrown +
Scale duration
persistent +
Scale position
basal +  and proximal +
Scale quantity
1;0;1 +
Scale reproduction
fertile +
Scale shape
2-keeled +
Scale some measurement
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Seed quantity
1 +
Sheath front texture
membranous +
Sheath shape
cylindric +
Sheath some measurement
0 cm0 mm <br />0 m <br /> (13 cm130 mm <br />0.13 m <br />) +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V23/V23 1093.xml +
Special status
Illustrated +  and Endemic +
Spike arrangement
arranged +
Spike density
dense +
Spike quantity
single +
Spike reproduction
androgynous +
Spikelet architecture
1-flowered +
Stamen atypical quantity
1 (3) +
Stamen fusion
distinct +
Stamen quantity
1 +  and 3 +
Stem architecture
septate +, hollow +  and solid +
Stem shape
compressed +, terete +  and trigonous +
Stigma quantity
3 +
Stigma relief
papillate +
Stigma some measurement
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Style architecture or shape
undivided +
Style arrangement or course or shape
linear +
Style duration
deciduous +
Style shape
2-3(-4)-fid +
Synonyms
Carex rachillis +
Taxon family
Cyperaceae +
Taxon name
Carex subnigricans +
Taxon parent
Carex sect. Inflatae +
Taxon rank
species +
Testa fusion
free +
Testa width
thin +
Volume
Volume 23 +
Whole organism architecture
short-rhizomatous +
Whole organism duration
perennial +
Whole organism growth form
plant +  and cespitose +
X chromosome quantity
10 +