familyPoaceae
subfamilyPoaceae subfam. Panicoideae
tribePoaceae tribe Paniceae
genusDigitaria
speciesDigitaria tomentosa

Digitaria tomentosa

(J. Konig ex Rottler) Henrard
J.K. Wipff
Treatment appears in FNA Volume 25. Treatment on page 364.
Please click on the illustration for a higher resolution version.
Illustrator: Hana Pazdírková, Linda A. Vorobik

Copyright: Utah State University

Plants perennial; cespitose, not rhizomatous. Culms 40-90 cm, erect, geniculate. Lower sheaths densely villous; upper sheaths with scattered papillose-based hairs; ligules 1.5-3 mm; blades 4-7 (12) cm long, 3-5 mm wide, villous to nearly glabrous, usually sparsely hairy near the ligules. Panicles simple, 10-18 cm, open; branches divergent; pedicels 0.4-3 mm, divergent, spikelets solitary. Spikelets 2-2.5 mm, elliptical, apiculate. Lower glumes absent or to 0.2 mm; upper glumes absent or to 0.6 mm, veinless; lower lemmas as long as the spikelets, 5-veined, margins and intercostal regions more or less pubescent; upper lemmas minutely rugose, dark-brown. 2n = 36.

Discussion

A native of southern India and Ceylon, Digitaria tomentosa is a noxious weed that is not known to occur in the Flora region. It is included here to help ensure that any introduction is correctly identified.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Digitaria tomentosa"
RDF feed
2n chromosome quantity
36 +
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 +
Anther quantity
3 +
Apex shape
obtuse +  and acuminate +
Arm cell presence
absent +
Arm cell quantity
anatomy +  and kranz +
Auricle presence
absent +
Author
J.K. Wipff +
Authority
(J. Konig ex Rottler) Henrard +
Awn atypical quantity
1 (?) +  and 3 (?) +
Awn orientation
arising +
Awn quantity
single +
Back shape
keeled +  and rounded +
Base architecture
pseudopetiolate +  and branching +
Base arrangement
divergent +  and parallel +
Base position
intravaginal +, extravaginal +, branching +  and basal +
Base size
swelling +
Base texture
membranous +
Base width
thick +
Blade architecture
disarticulating +  and pseudopetiolate +
Blade architecture or arrangement
non-radiate +  and radiate +
Blade length
4 cm40 mm <br />0.04 m <br /> (7 cm70 mm <br />0.07 m <br />) +
Blade position
adaxial +
Blade prominence or shape
flat +
Blade pubescence
hairy +, villous +  and nearly glabrous +
Blade shape
usually linear +  and lanceolate occasionally ovate +
Blade width
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Branch architecture
secund +
Branch arrangement
divergent +
Branch axis arrangement
singly +
Branch axis shape
triquetrous +
Branch presence
absent +
Branch shape
spikelike +
Branch some measurement
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Callus development
not developed +
Caryopsis architecture or shape
cleft +
Caryopsis presence
absent +
Caryopsis shape
planoconvex +
Cilium length or size
sometimes longer +
Culm architecture
at aerial culm nodes +  and 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 node location
aerial +
Culm orientation
erect +
Culm shape
geniculate +
Culm some measurement
40 cm400 mm <br />0.4 m <br /> (90 cm900 mm <br />0.9 m <br />) +
Culm texture
woody +
Distal cell length or size
long +
Distal cell size or width
narrow +
Distribution
N.C. +, Conn. +, N.J. +, N.Y. +, Wash. +, Va. +, Del. +, D.C +, Wis. +, W.Va. +, Pacific Islands (Hawaii) +, Md. +, Alta. +, B.C. +, Man. +, N.B. +, N.S. +, Ont. +, P.E.I. +, Que. +, Sask. +, Mass. +, Maine +, N.H. +, R.I. +, Vt. +, Fla. +, Wyo. +, Tenn. +, N.Mex. +, Tex. +, La. +, Ala. +, Miss. +, Okla. +, S.C. +, Pa. +, Ariz. +, Nev. +, Puerto Rico +, Colo. +, Ind. +, Virgin Islands +, Calif. +, Kans. +, N.Dak. +, Nebr. +, S.Dak. +, Ark. +, Ill. +, Ga. +, Iowa +, Idaho +, Mont. +, Oreg. +, Ohio +, Utah +, Mo. +, Minn. +, Mich. +  and Ky. +
Embryo quantity
1/5 +  and 1/2 +
Embryo shape
waisted +
Embryo size
large +
Endosperm texture
hard +
Filament shape
capillary +
Flap character
germination +
Floret architecture
pistillate +  and staminate +
Floret arrangement
adjacent +
Floret atypical quantity
3 +
Floret length or size
sometimes longer +
Floret palea development
well-developed +
Floret palea presence
absent +
Floret palea size
reduced +
Floret quantity
2 +
Floret reproduction
bisexual +
Floret shape
compressed +  and terete +
Fusoid cell presence
absent +
Glume architecture or shape
awned +
Glume height or length or size
shorter +
Glume length or size
shorter or longer +
Glume position
subtending +
Glume quantity
2 +
Glume size
unequal +
Glume texture
membranous +
Glume variability
equal +
Group architecture
pedicellate +
Hair architecture
papillose-based +
Hair architecture or shape
awned +
Hair arrangement
scattered +
Hair quantity
lacking +
Hair shape
uncinate +
Hilum arrangement or course or shape
linear +
Hilum coloration or relief
punctate +
Hilum shape
Punctiform (?) +  and Ellipsoid (?) +
Illustration
Present +
Illustration copyright
Utah State University +
Illustrator
Linda A. Vorobik +  and Hana Pazdírková +
Inflorescence architecture
bracteate +  and ebracteate +
Inflorescence position
axillary +
Inflorescence position or structure subtype
terminal +
Intercostal region pubescence
pubescent +
Internode architecture
solid +  and hollow +
Internode length
elongated +
Layer presence
absent +
Leaf arrangement
distichous +
Leaf margin arrangement
Overlapping (?) +
Leaf position
cauline +  and basal +
Lemma architecture or shape
awned +
Lemma coloration
hyaline +
Lemma texture
coriaceous +
Ligule architecture or pubescence or shape
ciliate +
Ligule presence
absent +
Ligule some measurement
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Ligule texture
membranous +
Lodicule fusion
free +
Lodicule height or length or size
short +
Lodicule presence
absent +
Lodicule prominence
inconspicuous +
Lodicule pubescence
glabrous +
Lodicule quantity
3 +
Lodicule shape
cuneate +
Lodicule texture
fleshy +
Lower floret architecture
staminate +
Lower floret reproduction
sterile +
Lower floret size
reduced +
Lower glume presence
absent +
Lower glume quantity
0-0.2 mm +
Lower lemma architecture
5-veined +
Lower lemma pubescence
pubescent +
Lower lemma texture
membranous +
Lower palea presence
absent +
Lower palea size
reduced +
Lower sheath pubescence
villous +
Margin arrangement
separated +
Margin coloration
hyaline +
Margin prominence or shape
flat +
Margin pubescence
pubescent +
Margin shape or vernation
involute +
Margin some measurement
0.5mm;1mm +
Microhair presence
absent +
Midrib architecture
complex +  and simple +
Node prominence
concealed +  and prominent +
Number of lower taxa
0 +
Other quantity
2 +  and 1 +
Ovary presence
absent +
Ovary pubescence
glabrous +
Palea shape
keeled +
Panicle architecture
open +  and simple +
Panicle fixation
attached +
Panicle location
subterranean +
Panicle some measurement
10 cm100 mm <br />0.1 m <br /> (18 cm180 mm <br />0.18 m <br />) +
Papilla presence
absent +
Pedicel arrangement
divergent +
Pedicel quantity
1 +
Pedicel some measurement
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Pericarp arrangement
separating +
Pericarp condition or texture
dry +
Pericarp texture
dry +  and fleshy +
Rachis prominence
evident +
Reference
None +
Row quantity
2 +
Secondary position
higher +
Sheath architecture
open +
Sheath condition
closed +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V25/V25 1054.xml +
Spike architecture
complex +
Spike arrangement
bisexual +
Spike reproduction
unisexual +
Spikelet architecture
pedicellate +
Spikelet architecture or arrangement or growth form
solitary +
Spikelet architecture or shape
apiculate +
Spikelet arrangement
in triplets +  and paired +
Spikelet arrangement or shape
elliptical +
Spikelet character
length +
Spikelet fixation
attached +
Spikelet presence
absent +
Spikelet quantity
1 +  and 60 +
Spikelet reproduction
unisexual +  and bisexual +
Spikelet shape
compressed +, lanceoloid +  and ellipsoid +
Spikelet some measurement
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Spikelet variability
equaling +
Stamen quantity
1 +  and 3 +
Starch-grain architecture
simple +
Stigma coloration
red +
Style-branch arrangement
close +
Style-branch atypical quantity
4 +  and 1 +
Style-branch fusion
fused +  and free +
Style-branch quantity
2 (?) +
Style quantity
2 +  and 3 +
Subsidiary-cell shape
dome--shaped +  and triangular +
Synonyms
Gramineae +
Taxon family
Poaceae +
Taxon name
Digitaria tomentosa +
Taxon parent
Digitaria +
Taxon rank
species +
Tissue coloration
hyaline +
Tissue texture
membranous +
Upper floret reproduction
bisexual +
Upper glume architecture
veinless +
Upper glume presence
absent +
Upper glume pubescence
pubescent +
Upper glume quantity
0-0.6 mm +
Upper glume size
subequal +
Upper lemma architecture
veined +
Upper lemma coloration
dark-brown +
Upper lemma pubescence or texture
Mostly stiffly chartaceous (Cartilaginous) +
Upper lemma relief
rugose +
Upper lemma texture
cartilaginous +, coriaceous +  and indurate +
Vein presence
absent +
Vein quantity
2 (?) +
Vein size
major +
Volume
Volume 25 +
Whole organism architecture
not rhizomatous +
Whole organism arrangement or pubescence
tufted +
Whole organism duration
perennial +
Whole organism growth form
plant +  and cespitose +
Whole organism growth form or habitat
aquatic +  and terrestrial +
Whole organism growth form or texture
herbaceous +
Whole organism reproduction
dioecious +, monoecious +  and synoecious +
Whole organism variability
various +
X chromosome atypical quantity
14 +, 12 +  and 7 +
X chromosome quantity
9 +