familyPoaceae
subfamilyPoaceae subfam. Pooideae
tribePoaceae tribe Triticeae
genusDasypyrum
speciesDasypyrum villosum

Dasypyrum villosum

(L.) P. Candargy [
Signe Frederiksen
Common names: Mosquitograss
Treatment appears in FNA Volume 24. Treatment on page 256.
Please click on the illustration for a higher resolution version.
Illustrator: Cindy Roché

Copyright: Utah State University

Plants annual. Culms 20-100 cm, decumbent to geniculate, glabrous. Blades 1-5 mm wide, supple, light green. Spikes 4-12 cm long, 0.6-2 cm wide. Spikelets 7-22 mm excluding the awns. Glumes 9-40 mm including the awns, with tufts of hair on the keels, hairs 1.5-3 mm, white; bisexual lemmas 10-13 mm, glabrous proximally, sparsely pilose distally, with a tuft of stiff hairs below the awns, awns 15-60 mm, straight; sterile lemmas smaller, awns 7-10 mm; paleas to 14 mm; anthers 3, 4-7 mm. 2n = 14.

Distribution

Pa.

Discussion

Dasypyrum villosum is native from southern Europe to Turkey, the Crimea, and the Caucasus. The only known North American record is a collection made in Philadelphia County, Pennsylvania, in 1877.

Dasypyrum breviaristatum (H. Lindb.) Fred, differs from D. villosum in being perennial and shortly rhizomatous, and in having stiff, dark green leaves, glume keels with hairs that are not in tufts, and awns to 15 mm long.

Selected References

None.

Lower Taxa

None.

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

... more about "Dasypyrum villosum"
RDF feed
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 coloration
yellow +
Anther quantity
3 +
Anther some measurement
3 cm30 mm <br />0.03 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Apex architecture or shape
awned +
Apex pubescence
hairy +
Apex shape
acuminate +  and tapering +
Arm cell presence
absent +
Auricle presence
absent +
Author
Signe Frederiksen +
Authority
(L.) P. Candargy [ +
Awn architecture
unbranched +
Awn atypical quantity
1 (?) +  and 3 (?) +
Awn course
straight +
Awn orientation
arising +
Awn position
basal +  and apical +
Awn position or structure subtype
terminal +
Awn pubescence or relief
scabrous +
Awn quantity
single +
Awn some measurement
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
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 coloration
light green +
Blade fragility
pliable +
Blade prominence
not evident +
Blade prominence or shape
flat +
Blade shape
cross +, linear +  and narrowly lanceolate +
Blade width
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Branch shape
spikelike +
Callus pubescence
hairy +  and glabrous +
Common name
Mosquitograss +
Culm architecture
not branching +
Culm architecture or arrangement or growth form
solitary +
Culm duration
annual +
Culm growth form
climbing +
Culm growth form or location
floating +
Culm growth form or orientation
decumbent +
Culm orientation
erect +
Culm pubescence
glabrous +
Culm shape
geniculate +
Culm some measurement
20 cm200 mm <br />0.2 m <br /> (100 cm1,000 mm <br />1 m <br />) +
Culm texture
not woody +
Distal floret reproduction
sterile +
Distal floret size
reduced +
Distribution
Pa. +
Embryo quantity
1/3 +
Endosperm texture
liquid +, soft +  and hard +
Filament shape
capillary +
Floret architecture
pistillate +  and staminate +
Floret arrangement
adjacent +
Floret length or size
longer +
Floret quantity
2 +  and 4 +
Floret reproduction
bisexual +
Floret shape
laterally compressed +  and terete +
Glume architecture
5-veined +
Glume architecture or shape
awned +
Glume height or length or size
shorter than to longer than the adjacent florets +
Glume position
subtending +
Glume presence
absent +
Glume quantity
2 +
Glume shape
2-keeled +
Glume size
unequal +
Glume some measurement
0.9 cm9 mm <br />0.009 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Glume texture
coriaceous +
Glume variability
equal +
Hair coloration
white +
Hair fragility
stiff +
Hair shape
uncinate +
Hair some measurement
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Hilum arrangement or course or shape
linear +
Hilum coloration or relief
punctate +
Hilum shape
Ovate (?) +
Illustration
Present +
Illustration copyright
Utah State University +
Illustrator
Cindy Roché +
Inflorescence architecture
compound +
Inflorescence density
dense +
Inflorescence length
4 cm40 mm <br />0.04 m <br /> (?) +  and 12 cm120 mm <br />0.12 m <br /> (?) +
Inflorescence position or structure subtype
terminal +
Inflorescence shape
compressed +
Inflorescence width
0.6 cm6 mm <br />0.006 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Internode architecture
solid +  and hollow +
Internode presence
absent +
Layer presence
absent +
Leaf arrangement
distichous +
Leaf margin arrangement
Overlapping (?) +
Lemma architecture
5-veined +
Lemma architecture or shape
not +  and awned +
Lemma pubescence
pilose +  and glabrous +
Lemma reproduction
sterile +  and bisexual +
Lemma shape
keeled +  and lanceolate +
Lemma size
smaller +
Lemma some measurement
1 cm10 mm <br />0.01 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
Lemma texture
stiffly membranous +  and coriaceous +
Ligule architecture or shape
truncate +
Ligule presence
absent +
Ligule some measurement
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.1 cm1 mm <br />0.001 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 +  and ciliate +
Lodicule quantity
2 +
Lodicule shape
lanceolate +
Lodicule texture
membranous +
Lower floret quantity
2 (?) +
Margin architecture or pubescence or shape
ciliate +
Midrib architecture
simple +
Node prominence
concealed +  and prominent +
Number of lower taxa
0 +
Other quantity
2 +  and 1 +
Ovary presence
absent +
Ovary pubescence
pubescent +
Palea architecture
2-veined +
Palea development
well-developed +
Palea height or length or size
shorter +
Palea length or size
slightly longer +
Palea presence
absent +
Palea shape
2-keeled +  and lanceolate +
Palea size
subequal +
Palea some measurement
0 cm0 mm <br />0 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
Palea texture
membranous +
Papilla presence
absent +
Pedicel presence
absent +
Pedicel quantity
0-4 mm +
Pericarp arrangement
separating +
Pericarp condition or texture
dry +
Pericarp texture
dry +  and fleshy +
Pericarp width
thin +
Pseudopetiole presence
absent +
Raceme shape
spikelike +
Rachilla length
prolonged +
Rachis prominence
evident +
Reference
None +
Sheath architecture
open +
Sheath condition
closed +
Sheath length
full +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V24/V24 368.xml +
Spike architecture
ebracteate +
Spike length
4 cm40 mm <br />0.04 m <br /> (?) +  and 12 cm120 mm <br />0.12 m <br /> (?) +
Spikelet architecture
subsessile +  and sessile +
Spikelet arrangement
divergent +
Spikelet fixation
attached +
Spikelet fusion
distinct +
Spikelet orientation
Ascending (?) +
Spikelet quantity
1 +
Spikelet reproduction
bisexual +  and sterile +
Spikelet shape
compressed +
Spikelet some measurement
0.7 cm7 mm <br />0.007 m <br /> (2.2 cm22 mm <br />0.022 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 fusion
free +
Style quantity
2 +
Subsidiary-cell architecture
parallel-sided +
Surface relief
not papillate +
Synonyms
Gramineae +
Taxon family
Poaceae +
Taxon name
Dasypyrum villosum +
Taxon parent
Dasypyrum +
Taxon rank
species +
Terminal floret reproduction
sterile +
Tissue coloration
hyaline +
Tissue texture
membranous +
Vein arrangement
converging +
Vein presence
absent +
Vein prominence
inconspicuous +
Vein quantity
2 (?) +
Vein size
major +
Volume
Volume 24 +
Whole organism architecture
rhizomatous +
Whole organism arrangement or pubescence
tufted +
Whole organism duration
annual +
Whole organism growth form
plant +
Whole organism growth form or habitat
aquatic +  and terrestrial +
X chromosome quantity
7 +