familyPoaceae
subfamilyPoaceae subfam. Panicoideae
tribePoaceae tribe Paniceae
genusDigitaria
speciesDigitaria leucocoma

Digitaria leucocoma

(Nash) Urb.
J.K. Wipff
Treatment appears in FNA Volume 25. Treatment on page 366.
Please click on the illustration for a higher resolution version.
Illustrator: Hana Pazdírková, Linda A. Vorobik

Copyright: Utah State University

Plants perennial; cespitose. Culms to 100 cm, erect, not branching at the lower nodes; nodes 1-2. Sheaths with appressed hairs, lower sheaths densely hairy, upper sheaths sparingly hairy near the base, otherwise glabrous; ligules 2-3 mm; blades 10-40 cm long, to 3 mm wide, usually flat, involute when dry. Panicles with 2-4 spikelike branches on 4-6 cm rachises; primary branches 20-25 cm long, axes triquetrous, not winged; primary branches bearing spikelets in unequally pedicellate groups of 3 (-5) on the basal 1/2; secondary branches rarely present, longer pedicels often adnate to the branch axes basally. Spikelets 2.2-2.5 mm long, 0.8 mm wide, elliptic, acute. Lower glumes absent; upper glumes 3-veined, margins and intercostal regions with long, glandular-tipped hairs; lower lemmas 7-veined, margins and the region between the 2 inner marginal veins with long glandular-hairs; upper lemmas light to dark-brown at maturity, striate, apiculate. 2n = unknown.

Discussion

Digitaria leucocoma is known only from high pine-lands near Lake Ella, Lake County, Florida. It has been treated in the past as a synonym of D. filiformis var. villosa.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Digitaria leucocoma"
RDF feed
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
(Nash) Urb. +
Awn atypical quantity
1 (?) +  and 3 (?) +
Awn orientation
arising +
Awn quantity
single +
Axis architecture
not winged +
Axis shape
triquetrous +
Back shape
keeled +  and rounded +
Basal 1/2 atypical quantity
3 (5) +
Basal 1/2 quantity
3 +
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
10 cm100 mm <br />0.1 m <br /> (40 cm400 mm <br />0.4 m <br />) +
Blade position
adaxial +
Blade prominence or shape
flat +
Blade shape
usually linear +  and lanceolate occasionally ovate +
Blade shape or vernation
involute +
Blade width
0 cm0 mm <br />0 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Branch architecture
secund +
Branch axis arrangement
singly +
Branch axis shape
triquetrous +
Branch presence
absent +
Branch quantity
2;4 +
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
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 node location
aerial +
Culm orientation
erect +
Culm some measurement
0 cm0 mm <br />0 m <br /> (100 cm1,000 mm <br />1 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 +
Glandular-hair length or size
long +
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
glandular-tipped +
Hair architecture or shape
awned +
Hair fixation or orientation
appressed +
Hair length or size
long +
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 +
Inner marginal vein quantity
2 +
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
0.2 cm2 mm <br />0.002 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 +
Longer pedicel fusion
adnate +
Lower floret architecture
staminate +
Lower floret reproduction
sterile +
Lower floret size
reduced +
Lower glume presence
absent +
Lower glume quantity
0 +  and 1/4 +
Lower lemma architecture
7-veined +
Lower lemma pubescence
pubescent +
Lower lemma texture
membranous +
Lower palea presence
absent +
Lower palea size
reduced +
Lower sheath pubescence
hairy +
Margin arrangement
separated +
Margin coloration
hyaline +
Margin prominence or shape
flat +
Margin shape or vernation
involute +
Margin some measurement
0.5mm;1mm +
Microhair presence
absent +
Midrib architecture
complex +  and simple +
Node prominence
concealed +  and prominent +
Node quantity
1 +  and 2 +
Number of lower taxa
0 +
Other quantity
2 +  and 1 +
Ovary presence
absent +
Ovary pubescence
glabrous +
Palea shape
keeled +
Panicle architecture
simple +
Panicle fixation
attached +
Panicle location
subterranean +
Papilla presence
absent +
Pedicel quantity
1 +
Pericarp arrangement
separating +
Pericarp condition or texture
dry +
Pericarp texture
dry +  and fleshy +
Primary branch length
20 cm200 mm <br />0.2 m <br /> (25 cm250 mm <br />0.25 m <br />) +
Rachis prominence
evident +
Rachis some measurement
4cm;6cm +
Reference
None +
Row quantity
2 +
Secondary branch presence
absent +
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 1063.xml +
Spike architecture
complex +
Spike arrangement
bisexual +
Spike reproduction
unisexual +
Spikelet architecture
pedicellate +
Spikelet architecture or arrangement or growth form
solitary +
Spikelet arrangement
in triplets +  and paired +
Spikelet arrangement or shape
elliptic +
Spikelet character
length +
Spikelet fixation
attached +
Spikelet length
0.22 cm2.2 mm <br />0.0022 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Spikelet presence
absent +
Spikelet quantity
1 +  and 60 +
Spikelet reproduction
unisexual +  and bisexual +
Spikelet shape
acute +
Spikelet some measurement
0.12 cm1.2 mm <br />0.0012 m <br /> (0.82 cm8.2 mm <br />0.0082 m <br />) +
Spikelet variability
equaling +
Spikelet width
0.8 +
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 leucocoma +
Taxon parent
Digitaria +
Taxon rank
species +
Tissue coloration
hyaline +
Tissue texture
membranous +
Upper floret reproduction
bisexual +
Upper glume architecture
3-veined +
Upper glume presence
absent +
Upper glume pubescence
pubescent +
Upper glume quantity
1/6 +
Upper glume size
subequal +
Upper lemma architecture
veined +
Upper lemma architecture or shape
apiculate +
Upper lemma coloration
light +  and dark-brown +
Upper lemma coloration or pubescence or relief
striate +
Upper lemma pubescence or texture
Mostly stiffly chartaceous (Cartilaginous) +
Upper lemma texture
cartilaginous +, coriaceous +  and indurate +
Upper sheath pubescence
glabrous +  and hairy +
Vein presence
absent +
Vein quantity
2 (?) +
Vein size
major +
Volume
Volume 25 +
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 +