familyCyperaceae
genusCarex
sectionCarex sect. Glareosae
speciesCarex canescens
subspeciesCarex canescens subsp. disjuncta

Carex canescens subsp. disjuncta

(Fernald) Toivonen

Ann. Bot. Fenn. 18: 94. 1981.

Heikki Toivonen
Common names: Carex disjoint
IllustratedEndemic
Basionym: Carex canescens var. disjuncta Fernald Proc. Amer. Acad. Arts 37: 488, plate 5, figs. 118–120. 1902
Synonyms: Carex disjuncta
Treatment appears in FNA Volume 23. Treatment on page 318. Mentioned on page 317.
Please click on the illustration for a higher resolution version.
Illustrator: Susan A. Reznicek

Copyright: Flora of North America Association

Culms 30–90 cm. Inflorescences 6–12 (–15) cm, all but distalmost spikes distant, proximal 2 spikes 2–5 cm apart. 2n = 54.


Phenology: Fruiting Apr–Jul.
Habitat: Wet, usually base-poor habitats, such as sphagnum bogs, moist coniferous forests and meadows, from lowlands to near the timberline in mountains
Elevation: 0–3500 m

Distribution

V23 559-distribution-map.jpg

St. Pierre and Miquelon, N.B., Nfld. and Labr., N.S., Ont., P.E.I., Que., Conn., Del., D.C., Ill., Ind., Maine, Md., Mass., Mich., Minn., N.H., N.J., N.Y., N.C., Ohio, Pa., R.I., S.C., Vt., Va., Wis.

Discussion

Carex canescens subsp. disjuncta is a dominating subspecies in the southern part of the range of the species in eastern North America; it grades into subsp. canescens in northern areas. Subspecies disjuncta differs from subsp. canescens in its longer culms (to 90 cm), leaves, inflorescences [1–12(–15) cm], and spikes. The subglobular spikes are often more numerous and the proximal separated by 2–5 cm. The perigynia are slightly longer, clearly wider and more abruptly beaked than in the type subspecies.

Selected References

None.

Lower Taxa

None.

"shortened" is not a number.No values specified.

... more about "Carex canescens subsp. disjuncta"
RDF feed
2n chromosome quantity
54 +
Abaxial margin architecture or shape
serrulate +
Abaxial suture architecture or shape
serrulate +
Abaxial suture prominence
inconspicuous +
Achene coloration
pale-brown +
Achene length
0.125 cm1.25 mm <br />0.00125 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Achene reflectance
dull +  and slightly glossy +
Achene shape
oblong-obovate +
Achene size
smaller +
Achene width
1mm;1.25mm +
Anther fixation
basifixed +
Apex architecture
beaked +  and beakless +
Apex pubescence
glabrous +
Apex relief
papillose +  and smooth +
Apex shape
obtuse;acutish +
Author
Heikki Toivonen +
Authority
(Fernald) Toivonen +
Basal sheath duration
persisting +
Basal sheath texture
fibrous +
Base shape
truncate +  and rounded +
Basionyms
Carex canescens var. disjuncta +
Beak architecture or shape
entire +
Beak prominence
inconspicuous +
Beak some measurement
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
Blade atypical length
20 cm200 mm <br />0.2 m <br /> (30 cm300 mm <br />0.3 m <br />) +
Blade atypical width
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Blade coloration
pale green +  and gray-green +
Blade fragility
not stiff +
Blade length
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
Blade presence
absent +
Blade prominence or shape
flat +
Blade shape
v--shaped +
Blade size
subequal +  and shorter +
Blade width
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 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 +
Center architecture
3-veined +
Center coloration
brownish tinged +
Center shape
ovate +
Center size
subequal +
Clump size
Medium-sized (?) +  and Small (?) +
Common name
Carex disjoint +
Cross-section pubescence
glabrous +
Culm coloration
brown +
Culm fragility
not stiff +
Culm orientation
erect +
Culm shape
round +  and trigonous +
Culm some measurement
30 cm300 mm <br />0.3 m <br /> (90 cm900 mm <br />0.9 m <br />) +
Distal bract shape
scale-like +
Distal scale architecture
empty +
Distal spike arrangement
approximate +
Distal spike course
flexuous +
Distal spike length
0.3 cm3 mm <br />0.003 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Distal spike shape
Suborbicular (Oblong) +
Distal spike width
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Distalmost spike arrangement
distant +
Distribution
St. Pierre and Miquelon +, N.B. +, Nfld. and Labr. +, N.S. +, Ont. +, P.E.I. +, Que. +, Conn. +, Del. +, D.C. +, Ill. +, Ind. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, N.H. +, N.J. +, N.Y. +, N.C. +, Ohio +, Pa. +, R.I. +, S.C. +, Vt. +, Va. +  and Wis. +
Elevation
0–3500 m +
Embryo position
basal +
Endosperm quantity
abundant +
Flower architecture
open +, pistillate +  and staminate +
Flower position
hypogynous +  and subtending +
Flower quantity
single +
Flower reproduction
unisexual +
Fruits achene shape
biconvex +  and trigonous +
Habitat
Wet, usually base-poor habitats, such as sphagnum bogs, moist coniferous forests and meadows, from lowlands to near the timberline in mountains +
Illustration
Present +
Illustration copyright
Flora of North America Association +
Illustrator
Susan A. Reznicek +
Inflorescence arrangement
racemose +
Inflorescence atypical some measurement
12 cm120 mm <br />0.12 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Inflorescence length
2 cm20 mm <br />0.02 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Inflorescence position or structure subtype
terminal +
Inflorescence some measurement
6 cm60 mm <br />0.06 m <br /> (12 cm120 mm <br />0.12 m <br />) +
Inflorescence width
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Inflorescences panicle architecture
pseudoumbel +
Inflorescences panicle development
modified +
Inner band coloration
red tinged +  and hyaline +
Inner band shape
concave +
Inner band width
thin +
Lateral spike architecture
sessile +  and pistillate +
Lateral spike reproduction
gynecandrous +
Leaf arrangement
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
Leaf position
basal +  and cauline +
Ligule length or size
slightly longer than wide +
Ligule presence
absent +
Locule quantity
1 +
Margin fusion
fused +
Margin shape
angled;rounded +
Marginal tooth size
small +
Midvein fusion
distinct +
Number of lower taxa
0 +
Panicle arrangement
arranged +
Part architecture
staminate +
Part prominence
conspicuous +
Perianth life cycle
falling +
Perianth presence
absent +
Perianth quantity
with (1-)3-6(-30) bristles and/or scales +
Pericarp width
thin +
Perigynium architecture
many-veined +
Perigynium atypical quantity
20 (30) +
Perigynium coloration
yellowish-brown +  and gray-green +
Perigynium length
0.18 cm1.8 mm <br />0.0018 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Perigynium orientation
appressed-ascending +
Perigynium quantity
10 (20) +
Perigynium shape
Elliptic-ovate (?) +
Perigynium some measurement
0.15 cm1.5 mm <br />0.0015 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Perigynium texture
membranous +
Phenology
Fruiting Apr–Jul. +
Pistil architecture
2-3(-4)-carpellate +
Pistil fusion
fused +
Pistil quantity
1 +
Prophyll architecture
pistillate +
Prophyll atypical quantity
0 (3) +
Prophyll position
subtending +
Prophyll quantity
3 (?) +  and 1 (?) +
Proximal bract architecture
sheathless +  and bristlelike +
Proximal bract height or length or size
shorter +
Proximal bract prominence
inconspicuous +
Proximal bract shape
scale-like +
Proximal scale architecture
pistillate +
Proximal spike arrangement or density
remote +
Proximal spike quantity
2 +
Publication title
Ann. Bot. Fenn. +
Publication year
1981 +
Raceme arrangement
arranged +
Reference
None +
Rhizome height or length or size
short +
Root derivation
adventitious +
Root texture
fibrous +
Scale architecture
pistillate +
Scale atypical quantity
6 (30) +
Scale coloration
hyaline with green +
Scale position
basal +  and proximal +
Scale quantity
1;0;1 +
Scale reproduction
fertile +
Scale shape
2-keeled +
Seed quantity
1 +
Sheath coloration
Pale-brown (?) +
Sheath front texture
membranous +
Sheath shape
cylindric +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V23/V23 559.xml +
Special status
Illustrated +  and Endemic +
Spike arrangement
apart +
Spike atypical quantity
10 (15) +
Spike position relational
exceeding +
Spike quantity
4;8 +
Spike rachis pubescence
glabrous +
Spike reproduction
gynecandrous +
Spike some measurement
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
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
2 +
Stigma relief
papillate +
Style architecture or shape
undivided +
Style arrangement or course or shape
linear +
Style duration
deciduous +
Style shape
2-3(-4)-fid +
Synonyms
Carex disjuncta +
Taxon family
Cyperaceae +
Taxon name
Carex canescens subsp. disjuncta +
Taxon parent
Carex canescens +
Taxon rank
subspecies +
Terminal spike architecture
staminate +
Terminal spike length
0;1/2 +
Terminal spike reproduction
gynecandrous +
Terminal spike shape
clavate +
Testa fusion
free +
Testa width
thin +
Tissue texture
spongy +
Volume
Volume 23 +
Whole organism architecture
rhizomatous +
Whole organism duration
perennial +
Whole organism growth form
plant +  and cespitose +
X chromosome quantity
27;33 +