familyPoaceae
subfamilyPoaceae subfam. Chloridoideae
tribePoaceae tribe Cynodonteae
genusDasyochloa
speciesDasyochloa pulchella

Dasyochloa pulchella

(Kunth) Willd. ex Rydb.
Jesus Valdes-Reyna
Common names: Fluffgrass
Synonyms: Triodia pulchella Tridens pulchellus Erioneuron pulchellum
Treatment appears in FNA Volume 25. Treatment on page 47.
Please click on the illustration for a higher resolution version.
Illustrator: Cindy Roché, Linda A. Vorobik

Copyright: Utah State University

Culms (1) 4-15 cm, scabrous or puberulent; peduncles (internode below the panicles) 3-7 (11) cm. Sheaths striate, margins scarious; ligules 3-5 mm; blades (1) 2-6 cm, abaxial surfaces scabrous, adaxial surfaces scabridulous. Panicles 1-2.5 cm long, 1-1.5 cm wide, densely white-pubescent, light green or purple-tinged. Spikelets (5) 6-9 (10) mm, with (4) 6-10 florets. Lower glumes 6-8.5 mm; upper glumes 6.5-9 mm, as long as or longer than the florets; lemmas 3-5.5 mm, lobes (1) 3-3.2 mm, midveins extending into straight (1.5) 2.5-4 mm awns; paleas 2-3.5 mm, keels long pilose proximally, ciliate distally; anthers 0.2-0.5 mm. Caryopses 1-1.5 mm, translucent. 2n = 16.

Distribution

Md., Colo., N.Mex., Tex., Utah, Calif., Wyo., Ariz., Nev.

Discussion

Dasyochloa pulchella grows in rocky soils of arid regions. It extends from the United States to central Mexico and is the most common grass in the Larrea-Flourensia scrub of the southwestern United States and adjacent Mexico.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Dasyochloa pulchella"
RDF feed
2n chromosome quantity
16 +
Abaxial ligule presence
absent +
Abaxial ligule quantity
common +
Abaxial surface pubescence or relief
scabrous +
Adaxial cell presence
absent +
Adaxial cell shape
bulliform +
Adaxial cell structure in adjective form
stomatal +
Adaxial ligule architecture or pubescence or shape
ciliate +
Adaxial ligule length or size
longer +
Adaxial ligule presence
absent +
Adaxial ligule texture
membranous +
Adaxial surface relief
scabridulous +
Anther quantity
3 +
Anther some measurement
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
Apical cell height or length or size
short +
Apical cell width
Wide (?) +
Arm cell anatomy
kranz +
Arm cell presence
absent +
Auricle presence
absent +
Author
Jesus Valdes-Reyna +
Authority
(Kunth) Willd. ex Rydb. +
Awn atypical quantity
1 (?) +  and 3 (?) +
Awn atypical some measurement
1.5 cm15 mm <br />0.015 m <br /> (?) +
Awn course
straight +
Awn orientation
arising +
Awn quantity
multiple +, , +  and single +
Awn some measurement
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Back shape
keeled +  and rounded +
Base architecture
pseudopetiolate +  and branching +
Base arrangement
close +
Base fusion
not fused +
Base position
intravaginal +, extravaginal +, branching +  and basal +
Base size
swelling +
Base texture
membranous +
Base width
thick +
Blade architecture
not pseudopetiolate +
Blade architecture or arrangement
radiate +
Blade atypical some measurement
1 cm10 mm <br />0.01 m <br /> (?) +
Blade position
adaxial +
Blade pubescence
pubescent +  and glabrous +
Blade shape
usually linear +  and lanceolate occasionally ovate +
Blade shape or vernation
involute +
Blade some measurement
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Bract architecture
leafy +
Branch quantity
1;many +
Branch shape
spikelike +
Caryopsis coloration or reflectance
translucent +
Caryopsis shape
oval +
Caryopsis some measurement
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Cell shape
triangular +  and dome--shaped +
Cilium architecture or pubescence or shape
ciliate +
Cilium length or size
sometimes longer +
Cilium texture
membranous +
Column quantity
single +
Common name
Fluffgrass +
Culm architecture
rooting +
Culm architecture or arrangement or growth form
solitary +
Culm atypical some measurement
1 +
Culm duration
annual +
Culm growth form
climbing +
Culm growth form or location
floating +
Culm orientation
bending +  and erect +
Culm pubescence
puberulent +  and scabrous +
Culm some measurement
4 cm40 mm <br />0.04 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Culm texture
not woody +
Distal floret size
reduced +
Distribution
Md. +, Colo. +, N.Mex. +, Tex. +, Utah +, Calif. +, Wyo. +, Ariz. +  and Nev. +
Embryo architecture or shape
cleft +
Embryo presence
absent +
Embryo quantity
/2 +  and 1 +
Embryo shape
not waisted +
Embryo size
large +
Endosperm texture
hard +
Filament shape
capillary +
Floret architecture
pistillate +  and staminate +
Floret arrangement
adjacent +
Floret atypical quantity
4 +
Floret height or length or size
shorter +
Floret length or size
longer +
Floret quantity
6 +  and 10 +
Floret reproduction
bisexual +
Floret shape
round +  and compressed +
Floret size
reduced +
Fusoid cell presence
absent +
Genus quantity
1 +
Glume architecture
1-veined +
Glume architecture or shape
awned +
Glume height or length or size
shorter +
Glume length or size
shorter or longer +
Glume position
subtending +
Glume pubescence
glabrous +
Glume quantity
2 +
Glume shape
weakly keeled shortly awned +  and mucronate +
Glume size
subequal +
Group quantity
3 +
Hair quantity
lacking +
Hair relief
coarse +
Hair shape
uncinate +
Hilum arrangement or course or shape
linear +
Hilum coloration or relief
punctate +
Hilum height or length or size
short +
Illustration
Present +
Illustration copyright
Utah State University +
Illustrator
Linda A. Vorobik +  and Cindy Roché +
Inflorescence architecture
pistillate +
Inflorescence arrangement
paniculate +  and racemose +
Inflorescence fusion
distinct +
Inflorescence height or length or size
short +
Inflorescence position
axillary +
Inflorescence position or structure subtype
terminal +
Internode architecture
hollow +  and solid +
Internode shape
elongate +
Keel architecture or pubescence or shape
ciliate +
Keel length or size
long +
Keel pubescence
pilose +
Lateral-vein architecture
not excurrent +
Layer presence
not absent +
Leaf arrangement
aggregated +
Leaf margin arrangement
Overlapping (?) +
Lemma architecture
3-veined +
Lemma architecture or shape
awned +
Lemma arrangement
adjacent +
Lemma pubescence
pilose +
Lemma shape
2-lobed +, keeled +  and rounded +
Lemma some measurement
0.3 cm3 mm <br />0.003 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
Lemma texture
membranous +
Ligule length or size
sometimes longer +
Ligule presence
absent +
Ligule some measurement
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Lobe atypical some measurement
1 cm10 mm <br />0.01 m <br /> (?) +
Lobe length or size
longer +
Lobe quantity
1/2 (?) +
Lobe shape
obtuse +
Lobe some measurement
? (?) +
Lodicule presence
absent +
Lodicule prominence
inconspicuous +
Lodicule quantity
2 +
Lower glume some measurement
0.6 cm6 mm <br />0.006 m <br /> (0.85 cm8.5 mm <br />0.0085 m <br />) +
Margin texture
scarious +
Marginal hair arrangement
adjacent +
Marginal hair fragility
stiff +
Marginal hair relief
coarse +
Microhair presence
absent +
Midrib architecture
simple +
Node prominence
concealed +  and prominent +
Number of lower taxa
0 +
Other quantity
2 +  and 1 +
Ovary pubescence
glabrous +
Palea shape
keeled +
Palea some measurement
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Panicle architecture
simple +
Panicle branch height or length or size
short +
Panicle coloration
purple-tinged +  and light green +
Panicle density
dense +
Panicle length
1cm +  and 2.5cm +
Panicle pubescence
white-pubescent +
Panicle width
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Peduncle atypical some measurement
11 cm110 mm <br />0.11 m <br /> (?) +
Peduncle some measurement
3 cm30 mm <br />0.03 m <br /> (?) +  and 7 cm70 mm <br />0.07 m <br /> (?) +
Pericarp architecture or fragility
loose +
Pericarp arrangement
separating +
Pericarp condition or texture
dry +
Pericarp fusion
free +
Pericarp texture
dry +  and fleshy +
Raceme shape
spikelike +
Rachis prominence
evident +
Reference
None +
Sheath architecture
open +
Sheath coloration or pubescence or relief
striate +
Sheath condition
closed +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V25/V25 74.xml +
Spikelet architecture
subsessile +  and shortly pedicellate +
Spikelet architecture or arrangement or growth form
solitary +
Spikelet atypical some measurement
5 +
Spikelet fixation
attached +
Spikelet position or shape
distal +
Spikelet presence
absent +
Spikelet quantity
2 +  and 4 +
Spikelet reproduction
sterile +
Spikelet shape
compressed +
Spikelet some measurement
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Stamen quantity
1 +  and 3 +
Starch-grain architecture
compound +  and simple +
Starch-grain presence
absent +
Style-branch atypical quantity
4 +  and 1 +
Style-branch quantity
2 (?) +  and 3 (?) +
Style arrangement
separate +
Style quantity
2 +
Synonyms
Triodia pulchella +, Tridens pulchellus +  and Erioneuron pulchellum +
Taxon architecture
staminate +
Taxon family
Poaceae +
Taxon name
Dasyochloa pulchella +
Taxon parent
Dasyochloa +
Taxon rank
species +
Taxon reproduction
dioecious +
Tissue coloration
hyaline +
Tissue texture
membranous +
Tuft some measurement
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Upper glume some measurement
0.65 cm6.5 mm <br />0.0065 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Vein presence
absent +
Vein quantity
7 (?) +  and 13 (?) +
Vein size
major +
Volume
Volume 25 +
Whole organism architecture
stoloniferous +
Whole organism arrangement or pubescence
tufted +
Whole organism duration
perennial +
Whole organism growth form
plant +  and mat-forming +
Whole organism growth form or habitat
aquatic +  and terrestrial +
Whole organism reproduction
dioecious +, monoecious +  and synoecious +
Whole organism variability
varied +
X chromosome atypical quantity
12 +
X chromosome quantity
8 +