familyPoaceae
subfamilyPoaceae subfam. Chloridoideae
tribePoaceae tribe Cynodonteae
genusCynodon
speciesCynodon plectostachyus

Cynodon plectostachyus

(K. Schum.) Pilg.
Mary E. Barkworth
Common names: Stargrass
Treatment appears in FNA Volume 25. Treatment on page 237.
Please click on the illustration for a higher resolution version.
Illustrator: Annaliese Miller, Linda A. Vorobik

Copyright: Utah State University

Plants stoloniferous, not rhizomatous; stolons to 2 mm thick, arching. Culms 60-100 cm tall, 1-4 mm thick, glabrous. Sheaths mostly glabrous or sparsely to densely pilose, with long hairs adjacent to the ligules; ligules 1-2 mm; blades to 30 cm long, 4-8 mm wide, both surfaces scabrous and densely pubescent. Panicles with 6-20 subdigitate branches; branches 3-10 cm, in (1) 2-7 closely spaced whorls, axes triquetrous. Spikelets 2.5-3 mm, closely imbricate; rachillas prolonged, glabrous, sometimes terminating in a vestigial floret. Lower glumes 0.1-0.3 mm; upper glumes 0.4-0.6 mm; lemmas 2.4-3 mm, keels not winged, keels and margins pubescent, hairs 0.3-0.4 mm; paleas stiffly ciliate on the keels. 2n = 18, 36.

Distribution

Calif.

Discussion

Cynodon plectostachyus is native to tropical Africa. Its status in the Flora region is unclear. The records shown are from non-cultivated plants, but it is not known whether they represent established populations. Cynodon plectostachyus is not frost-tolerant.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Cynodon plectostachyus"
RDF feed
2n chromosome quantity
36 +  and 18 +
Abaxial ligule presence
absent +
Abaxial ligule quantity
common +
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 +
Anther quantity
3 +
Apex shape
muticous +  and mucronate +
Apical cell height or length or size
short +
Apical cell width
Wide (?) +
Arm cell anatomy
kranz +
Arm cell presence
absent +
Auricle presence
absent +
Author
Mary E. Barkworth +
Authority
(K. Schum.) Pilg. +
Awn atypical quantity
1 (?) +  and 3 (?) +
Awn orientation
arising +
Awn quantity
multiple +, , +  and single +
Axis shape
triquetrous +
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
disarticulating +
Blade architecture or arrangement
radiate +
Blade arrangement or vernation
conduplicate +
Blade length
0 cm0 mm <br />0 m <br /> (30 cm300 mm <br />0.3 m <br />) +
Blade position
adaxial +
Blade prominence or shape
flat +
Blade pubescence
pubescent +  and glabrous +
Blade shape
involute +  and convolute +
Blade width
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Branch architecture
subdigitate +
Branch atypical quantity
1 (?) +
Branch quantity
6;20 +
Branch shape
spikelike +
Branch some measurement
3 cm30 mm <br />0.03 m <br /> (10 cm100 mm <br />0.1 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
Stargrass +
Culm architecture
branched +
Culm architecture or arrangement or growth form
solitary +
Culm duration
annual +
Culm growth form
climbing +
Culm growth form or location
floating +
Culm height
60 cm600 mm <br />0.6 m <br /> (100 cm1,000 mm <br />1 m <br />) +
Culm orientation
ascending +  and erect +
Culm pubescence
glabrous +
Culm some measurement
4 cm40 mm <br />0.04 m <br /> (100 cm1,000 mm <br />1 m <br />) +
Culm texture
not woody +
Culm thickness
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Distal floret size
reduced +
Distribution
Calif. +
Embryo architecture or shape
cleft +
Embryo presence
absent +
Embryo shape
not waisted +
Embryo size
large +
Endosperm texture
hard +
Filament shape
capillary +
Floret architecture
pistillate +  and staminate +
Floret arrangement
adjacent +
Floret atypical quantity
1 +  and 3 +
Floret height or length or size
shorter +
Floret length or size
sometimes longer +
Floret prominence
vestigial +
Floret quantity
1 +
Floret reproduction
bisexual +  and fertile +
Floret shape
round +  and compressed +
Floret size
reduced +
Fusoid cell presence
absent +
Genus quantity
1 +
Glume architecture or shape
awned +
Glume height or length or size
usually shorter +
Glume length or size
shorter or longer +
Glume position
subtending +
Glume quantity
2 +
Glume shape
muticous +  and keeled +
Glume texture
membranous +
Group quantity
3 +
Hair arrangement
adjacent +
Hair length or size
long +
Hair quantity
lacking +
Hair relief
coarse +
Hair shape
uncinate +
Hair some measurement
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
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 Annaliese Miller +
Inflorescence architecture
subdigitate +  and digitate +
Inflorescence arrangement
paniculate +  and racemose +
Inflorescence fusion
distinct +
Inflorescence position
axillary +
Inflorescence position or structure subtype
terminal +
Internode architecture
hollow +  and solid +
Internode shape
elongate +
Keel architecture
not winged +
Keel pubescence
pubescent +
Layer presence
not absent +
Leaf arrangement
distichous +
Leaf margin arrangement
Overlapping (?) +
Lemma architecture
3-veined +
Lemma architecture or shape
awned +
Lemma shape
keeled +
Lemma some measurement
0.24 cm2.4 mm <br />0.0024 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Lemma texture
membranous +  and cartilaginous +
Ligule length or size
sometimes longer +
Ligule presence
absent +
Ligule some measurement
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Ligule texture
membranous +
Lodicule presence
absent +
Lodicule prominence
inconspicuous +
Lodicule quantity
2 +
Lower glume architecture
1-veined +
Lower glume some measurement
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
Lowest floret function
functional +
Margin pubescence
pubescent +
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 architecture or pubescence or shape
ciliate +
Palea shape
2-keeled +
Panicle architecture
simple +
Panicle branch height or length or size
short +
Pericarp architecture or fragility
loose +
Pericarp arrangement
separating +
Pericarp condition or texture
dry +
Pericarp fusion
free +
Pericarp texture
dry +  and fleshy +
Raceme shape
spikelike +
Rachilla extension presence
absent +
Rachilla length
prolonged +
Rachilla pubescence
glabrous +
Rachis prominence
evident +
Reference
None +
Row quantity
2 +
Sheath architecture
open +
Sheath condition
closed +
Sheath pubescence
mostly glabrous or +  and sparsely densely pilose +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V25/V25 373.xml +
Spikelet architecture
subsessile +
Spikelet architecture or arrangement or growth form
solitary +
Spikelet arrangement
imbricate +
Spikelet fixation
attached +
Spikelet fixation or orientation
appressed +
Spikelet position or shape
distal +
Spikelet presence
absent +
Spikelet quantity
1 +  and 60 +
Spikelet reproduction
sterile +
Spikelet shape
compressed +
Spikelet some measurement
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Stamen quantity
1 +  and 3 +
Starch-grain architecture
compound +  and simple +
Starch-grain presence
absent +
Stolon orientation
arching +
Stolon thickness
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Style-branch atypical quantity
4 +  and 1 +
Style-branch quantity
2 (?) +
Style-branch shape
plumose +
Style arrangement
separate +
Style quantity
2 +
Surface pubescence
pubescent +
Surface pubescence or relief
scabrous +
Synonyms
Gramineae +
Taxon architecture
staminate +
Taxon family
Poaceae +
Taxon name
Cynodon plectostachyus +
Taxon parent
Cynodon +
Taxon rank
species +
Taxon reproduction
dioecious +
Tissue coloration
hyaline +
Tissue texture
membranous +
Turf density
dense +
Upper glume architecture
1-3-veined +
Upper glume architecture or shape
awned +
Upper glume some measurement
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
Vein presence
absent +
Vein quantity
7 (?) +  and 13 (?) +
Vein size
major +
Volume
Volume 25 +
Whole organism architecture
not rhizomatous +  and stoloniferous +
Whole organism arrangement or pubescence
tufted +
Whole organism duration
perennial +
Whole organism growth form
plant +
Whole organism growth form or habitat
aquatic +  and terrestrial +
Whole organism reproduction
dioecious +, monoecious +  and synoecious +
Whole organism variability
varied +
Whorl arrangement
spaced +
Whorl atypical quantity
1 (?) +
Whorl quantity
2;7 +
X chromosome atypical quantity
12 +
X chromosome quantity
9 +