familyPoaceae
subfamilyPoaceae subfam. Pooideae
tribePoaceae tribe Poeae
genusTorreyochloa
speciesTorreyochloa pallida
varietyTorreyochloa pallida var. pauciflora

Torreyochloa pallida var. pauciflora

(J. Presl) J.I. Davis
Jerrold I. Davis
Common names: Weak mannagrass
Synonyms: Torreyochloa pauciflora Puccinellia pauciflora var. microtheca Puccinellia pauciflora var. holmii Glyceria pauciflora Glyceria otisii
Treatment appears in FNA Volume 24. Treatment on page 608.
Please click on the illustration for a higher resolution version.
Illustrator: Annaliese Miller

Copyright: Utah State University

Culms 20-145 cm tall, (1.3) 1.8-4.8 mm thick, usually erect. Ligules of larger cauline leaves 3-9 mm; widest cauline blades 3.6-18 mm wide. Panicles (3) 5-25 cm long, (1) 2-14 cm wide, 1.2-5.75 (7.5) times as long as wide, narrowly to widely conic, ovoid, or obovoid. Spikelets 3.6-6.9 mm, with (3) 4-8 florets. Lower glumes 0.7-1.6 mm; upper glumes 0.9-1.8 mm; lemmas 2.2-3.3 mm, truncate or obtuse to acute; anthers of lowest floret 0.5-0.7 mm.

Distribution

Colo., N.Mex., Wash., Utah, Alaska, Alta., B.C., Yukon, Idaho, Mont., S.Dak., Wyo., Ariz., Calif., Nev., Oreg.

Discussion

Torreyochloa pallida var. pauciflora grows in western North America, from sea level to 3500 m. Robust plants from Pacific lowland forests are often taller than 1 m; plants from farther east and higher elevations tend to be shorter.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Torreyochloa pallida var. pauciflora"
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2n chromosome quantity
14 +
Abaxial ligule presence
absent +
Abaxial ligule quantity
common +
Adaxial cell presence
absent +
Adaxial cell shape
bulliform +
Adaxial ligule architecture or pubescence or shape
ciliate +
Adaxial ligule presence
absent +
Adaxial ligule texture
membranous +  and scarious +
Anther quantity
3 +
Anther some measurement
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Apex architecture
entire +  and serrate-erose +
Apex relief
scabridulous +
Arm cell presence
absent +
Auricle presence
absent +
Author
Jerrold I. Davis +
Authority
(J. Presl) J.I. Davis +
Awn atypical quantity
1 (?) +  and 3 (?) +
Awn course
straight +
Awn orientation
arising +
Awn position
basal +  and terminal +
Awn quantity
single +
Awn shape
bent +
Back shape
keeled +  and rounded +
Basal floret quantity
1 +  and 2 +
Base architecture
pseudopetiolate +  and branching +
Base arrangement
close +
Base fusion
free +
Base position
intravaginal +, extravaginal +, branching +  and basal +
Base size
swelling +
Base texture
hard +
Base width
thick +
Blade arrangement
parallel +
Blade arrangement or course or shape
linear +
Blade prominence
not evident +
Blade prominence or shape
flat +
Blade shape
cross +, linear +  and narrowly lanceolate +
Branch pubescence or relief
scabrid +  and scabrous +
Branch shape
spikelike +
Callus development
developed +
Callus pubescence
glabrous +
Callus shape
blunt +
Common name
Weak mannagrass +
Culm architecture
rooting +
Culm architecture or arrangement or growth form
solitary +
Culm duration
annual +
Culm growth form
matted +
Culm growth form or location
floating +
Culm growth form or orientation
decumbent +
Culm height
20 cm200 mm <br />0.2 m <br /> (145 cm1,450 mm <br />1.45 m <br />) +
Culm orientation
erect +
Culm some measurement
18 cm180 mm <br />0.18 m <br /> (145 cm1,450 mm <br />1.45 m <br />) +
Culm texture
not woody +
Culm thickness
0.18 cm1.8 mm <br />0.0018 m <br /> (0.48 cm4.8 mm <br />0.0048 m <br />) +
Distal floret size
reduced +
Distribution
Colo. +, N.Mex. +, Wash. +, Utah +, Alaska +, Alta. +, B.C. +, Yukon +, Idaho +, Mont. +, S.Dak. +, Wyo. +, Ariz. +, Calif. +, Nev. +  and Oreg. +
Embryo quantity
1/4 +  and 1/3 +
Endosperm texture
liquid +, soft +  and hard +
Filament shape
capillary +
Floret anther some measurement
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
Floret architecture
pistillate +  and staminate +
Floret arrangement
adjacent +
Floret atypical quantity
3 +
Floret length or size
sometimes longer +
Floret position or shape
distal +
Floret quantity
4 +  and 8 +
Floret reproduction
sterile +  and bisexual +
Floret shape
compressed +
Floret size
reduced +
Glume architecture or shape
awned +
Glume height or length or size
shorter +
Glume length or size
shorter or longer +
Glume position
subtending +
Glume presence
absent +
Glume quantity
2 +
Glume shape
rounded +  and weakly keeled +
Glume size
unequal +
Glume texture
membranous +
Glume variability
equal +
Hair shape
uncinate +
Hilum arrangement or course or shape
linear +
Hilum coloration or relief
punctate +
Hilum quantity
1/3 +
Hilum shape
Oblong (?) +
Illustration
Present +
Illustration copyright
Utah State University +
Illustrator
Annaliese Miller +
Inflorescence architecture
compound +
Inflorescence position or structure subtype
terminal +
Internode architecture
hollow +
Internode presence
absent +
Lateral-vein presence
absent +
Lateral-vein size
reduced +
Layer presence
absent +
Leaf arrangement
distichous +
Leaf margin arrangement
Overlapping (?) +
Lemma architecture
(5)7-9-veined +
Lemma architecture or shape
awned +
Lemma height or length or size
shorter +
Lemma length or size
longer +
Lemma pubescence
pubescent +
Lemma shape
obtuse +  and acute +
Lemma some measurement
0.22 cm2.2 mm <br />0.0022 m <br /> (0.33 cm3.3 mm <br />0.0033 m <br />) +
Lemma texture
membranous +
Ligule presence
absent +
Ligule shape
acute +  and attenuate +
Ligule some measurement
0.3 cm3 mm <br />0.003 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Ligule texture
membranous +
Lodicule architecture
veined +
Lodicule architecture or pubescence or shape
ciliate +
Lodicule architecture or shape
truncate +
Lodicule fusion
free +
Lodicule prominence
inconspicuous +
Lodicule pubescence
glabrous +
Lodicule quantity
2 +
Lodicule shape
toothed +  and entire +
Lodicule texture
membranous +
Lower glume architecture
1(3)-veined +
Lower glume some measurement
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
Lowermost branch orientation
reflexed +  and erect +
Midrib architecture
simple +
Node prominence
concealed +  and prominent +
Number of lower taxa
0 +
Other quantity
2 +  and 1 +
Ovary presence
absent +
Ovary pubescence
glabrous +  and hairy +
Palea architecture
2-veined +
Palea development
well-developed +
Palea presence
absent +
Palea shape
2-keeled +
Palea size
subequal +
Panicle l w ratio
1.2-5.75(7.5) +
Panicle length
5cm +  and 25cm +
Panicle shape
obovoid +, ovoid +  and conic +
Panicle size
reduced +
Panicle width
2 cm20 mm <br />0.02 m <br /> (14 cm140 mm <br />0.14 m <br />) +
Papilla presence
absent +
Pedicel thickness
0mm +  and 0.5mm +
Pericarp arrangement
separating +
Pericarp condition or texture
dry +
Pericarp texture
dry +  and fleshy +
Pericarp width
thin +
Pseudopetiole development
not developed +
Pseudopetiole presence
absent +
Rachilla length
prolonged +
Rachis prominence
evident +
Reference
None +
Sheath architecture
open +
Sheath condition
closed +
Sheath length
open +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V24/V24 864.xml +
Special status
Endemic +
Spike architecture
ebracteate +
Spikelet architecture
pedicellate +
Spikelet arrangement
mixed +
Spikelet fixation
attached +
Spikelet quantity
1 +  and 60 +
Spikelet reproduction
viviparous +
Spikelet shape
laterally compressed +  and terete +
Spikelet some measurement
0.36 cm3.6 mm <br />0.0036 m <br /> (0.69 cm6.9 mm <br />0.0069 m <br />) +
Stamen quantity
1 +  and 3 +
Starch-grain architecture
simple +  and compound +
Style-branch atypical quantity
4 +  and 1 +
Style-branch quantity
2 (?) +  and 3 (?) +
Style quantity
2 +
Subsidiary-cell architecture
parallel-sided +
Synonyms
Torreyochloa pauciflora +, Puccinellia pauciflora var. microtheca +, Puccinellia pauciflora var. holmii +, Glyceria pauciflora +  and Glyceria otisii +
Taxon family
Poaceae +
Taxon name
Torreyochloa pallida var. pauciflora +
Taxon parent
Torreyochloa pallida +
Taxon rank
variety +
Terminal floret reproduction
sexual +
Tissue coloration
hyaline +
Tissue texture
membranous +
Upper glume architecture
(1)3(5)-veined +
Upper glume some measurement
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
Vein arrangement
parallel +
Vein presence
absent +
Vein prominence
obscure +  and prominent +
Vein quantity
2 (?) +
Vein relief
scabridulous +
Vein size
major +
Volume
Volume 24 +
Whole organism architecture
rhizomatous +
Whole organism arrangement or pubescence
tufted +
Whole organism duration
perennial +
Whole organism growth form
plant +
Whole organism growth form or habitat
aquatic +  and terrestrial +
X chromosome quantity
7 +