familyJuncaceae
genusLuzula
subgenusLuzula subg. Luzula
speciesLuzula subcongesta

Luzula subcongesta

(S. Watson) Jepson

Flora of California 1: 258, fig. 45. 1921.

Janice Coffey Swab
Endemic
Basionym: Luzula spadicea var. subcongesta S. Watson Bot. California 2: 202. 1880
Treatment appears in FNA Volume 22.

Rhizomes horizontal, stout. Culms 15–48 cm. Leaves: basal leaf-sheaths bluish green; basal leaves bluish green, abruptly tapered, less than 19 cm × 3–5 mm, apex long. Inflorescences with glomerules crowded at ends of uneven peduncles; glomerules each with 3–12 flowers, central glomerules sessile or nearly sessile; peduncles arching in all directions; proximal inflorescence bract inconspicuous, 2–3 cm; bracteoles clear, margins ciliate. Flowers: tepals pale to dark-brown (apex acute), 1.5–2 mm, apex acute; anthers ± equaling filament length. Capsules pale to dark brown-purple, shorter than tepals; (beak short). Seeds brown, oblong-ovoid, 1.1–1.2 mm; caruncle absent. 2n = 24.


Phenology: Flowering and fruiting summer.
Habitat: Alpine to subalpine moist or wet places
Elevation: 2000–3500 m

Distribution

V22 220-distribution-map.jpg

Calif., Oreg.

Discussion

Luzula subcongesta has bluish green basal leaves, tapered abruptly to the long apex.

Selected References

Hämet-Ahti, L. and V. Virrankoski. 1971. Cytotaxonomic notes on some monocotyledons of Alaska and northern British Columbia. Ann. Bot. Fenn. 8: 156--159.

Hämet-Ahti, L. 1986. North American races of Juncus alpinoarticulatus. Ann. Bot. Fenn. 23: 277--281.

Boivin, B. 19672--1979. Flora of the prairie provinces. Part I(--IV). Monopsida. Phytologia 42(5): 385--414.15--18, 22--23, 42--43: passim.

Harriman, N. A. and D. Redmond. 1976. Somatic chromosome numbers for some North American species of Juncus L. Rhodora 78: 727--738.

Holmen, K. and H. Mathiesen. 1953. Luzula wahlenbergii in Greenland. Bot. Tidsskr. 49: 233--238.

Jørgensen, C. A., T. JH. Sørensen, and M. Westergaard. 1958. The flowering plants of Greenland: A taxonomical and cytological survey. Biol. Skr. 9(4): 1--172.

Löve, Á. and D. Löve. 1966. Cytotaxonomy of the alpine vascular plants of Mount Washington. University of Colorado Stud. Ser. Biol. 24: 1--74.

Lindquist, B. 1932. Taxonomical remarks on Juncus alpinus Villars and some related species. Bot. Not. 1932: 313--372.

Murray, N. A. and D. M. Johnson. 1987. Taxonomic notes on Juncus pelocarpus s.l. Contr. Univ. Michigan Herb. 16: 179--187.

Nordenskiöld, H. 1951. Cyto-taxonomical studies in the genus Luzula. I. Somatic chromosomes and chromosome numbers. Hereditas (Lund) 37: 325--355.

Packher, J. G. 1964. Chromosome numbers and taxonomic notes on western Canadian and Arctic plants. Canad. J. Bot. 42: 473--494.

Lower Taxa

None.
... more about "Luzula subcongesta"
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2n chromosome quantity
24 +
Anther arrangement or course or shape
linear +
Anther duration
persistent +
Apex length or size
long +
Apex shape
acute +
Apex size or width
thickened +
Apex texture
callous +
Appendage coloration
white +
Author
Janice Coffey Swab +
Authority
(S. Watson) Jepson +
Basal leaf coloration
bluish green +
Basal leaf length
0 cm0 mm <br />0 m <br /> (19 cm190 mm <br />0.19 m <br />) +
Basal leaf shape
tapered +
Basal leaf width
0.3 cm3 mm <br />0.003 m <br /> (?) +  and 0.5 cm5 mm <br />0.005 m <br /> (?) +
Basal sheath coloration
bluish green +
Basionyms
Luzula spadicea var. subcongesta +
Blade architecture
septate +
Blade pubescence
glabrous +
Blade shape
channeled;flat +
Bract architecture or shape
leaflike +
Bract quantity
2 +
Bracteole coloration
clear +
Bracteole quantity
2 +  and 3 +
Capsule architecture or structure in adjective form
1-locular +
Capsule coloration
pale +  and dark brown-purple +
Capsule height or length or size
shorter +
Capsule shape
globose +
Caruncle presence
absent +
Caruncle prominence
conspicuous;barely visible +
Cataphyll presence
absent +
Central glomerule architecture
sessile +
Culm shape
round +
Culm some measurement
15 cm150 mm <br />0.15 m <br /> (48 cm480 mm <br />0.48 m <br />) +
Distribution
Calif. +  and Oreg. +
Elevation
2000–3500 m +
End quantity
1 +
Extension quantity
2 +
Extension shape
earlike +
Filament variability
equaling +
Flower architecture or shape
symmetric +
Flower arrangement
arranged +
Flower position
in dense clusters +  and inserted +
Flower quantity
3;12 +
Flower reproduction
bisexual +
Flower shape
headlike +
Fruits capsule dehiscence
loculicidal +
Glomerule arrangement
crowded +
Habitat
Alpine to subalpine moist or wet places +
Hair architecture
multicellular +
Hair length or size
long +
Hair pubescence or texture
soft +
Hair texture
fibrous +
Illustration copyright
Flora of North America Association +
Illustrator
Yevonn Wilson-Ramsey +
Inflorescence architecture
umbellate +
Inflorescence bract prominence
inconspicuous +
Inflorescence bract some measurement
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Inflorescence branch quantity
1 (2) +
Inflorescence branch size
reduced +
Inflorescence position or structure subtype
terminal +
Inflorescence shape
spikelike +
Leaf position
basal +
Locule quantity
3 +  and 1 +
Margin architecture or pubescence or shape
ciliate +
Margin pubescence
hairy +
Number of lower taxa
0 +
Nutritive appendage coloration
white +
Nutritive appendage prominence
visible +
Outer seed-coat presence
absent +
Ovary position
superior +
Peduncle orientation
arching +
Peduncle variability
uneven +
Petal coloration
green;brown or purplish black +
Petal duration
persistent +
Phenology
Flowering and fruiting summer. +
Pistil quantity
1 +
Placenta arrangement
parietal +  and axile +
Placenta position
basal +
Placenta quantity
3 +  and 1 +
Publication title
Flora of California +
Publication year
1921 +
Reference
ahti1971a +, ahti1986a +, boivin19672a +, harriman1976a +, holmen1953a +, j1958a +, l1966a +, lindquist1932a +, murray1987a +, nordenski1951a +  and packher1964a +
Rhizome fragility or size
stout +
Rhizome height or length or size
short +
Rhizome orientation
horizontal +
Seed body variability
equaling +
Seed coloration
brown +
Seed quantity
3 +
Seed shape
oblong-ovoid +
Seed some measurement
0.11 cm1.1 mm <br />0.0011 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
Sepal coloration
green;brown or purplish black +
Sepal duration
persistent +
Sheath condition
closed +
Sheath margin arrangement
overlapping +
Sheath margin fusion
fused +
Sheath pubescence
pilose +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/62857cf6bca5c4637d27b113da92d27dbf9962f4/V22/V22 220.xml +
Special status
Endemic +
Stamen quantity
6 +
Stigma length or size
generally longer +
Stolon height or length or size
short +
Stolon orientation
vertical +
Style base duration
persistent +
Subtending flower architecture or arrangement or growth form
solitary +
Subtending flower coloration or reflectance
translucent +
Subtending flower quantity
0;2 +
Subtending flower size
reduced +
Synonyms
Luzula sect. Gymnodes +  and Luzula subg. Gymnodes +
Taxon family
Juncaceae +
Taxon name
Luzula subcongesta +
Taxon parent
Luzula subg. Luzula +
Taxon rank
species +
Tepal coloration
pale +  and dark-brown +
Tepal quantity
6 +
Tepal some measurement
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Vein prominence
indistinct +
Volume
Volume 22 +
Whole organism architecture
rhizomatous +
Whole organism duration
perennial +
Whole organism growth form
herb +  and cespitose +
Whorl quantity
2 +
X chromosome quantity
6 +