familyPoaceae
subfamilyPoaceae subfam. Pooideae
tribePoaceae tribe Poeae
genusPoa
subgenusPoa subg. Poa
sectionPoa sect. Secundae
subsectionPoa subsect. Halophytae

Poa subsect. Halophytae

V.L. Marsh ex Soreng
Robert J. Soreng
Treatment appears in FNA Volume 24.

Plants perennial; not stoloniferous, not rhizomatous. Culms 5-100 cm. Sheaths closed for 1/10 – 1/5 (1/4) their length, terete; ligules 2-6 mm, apices acute to acuminate; blades 1-5 mm wide. Panicles 3-18 (25) cm; nodes with 2-7 branches. Spikelets (4) 4.5-10 mm, lengths 3-3.6 times widths, lanceolate to narrowly ovate, laterally compressed, sometimes bulbiferous; florets 3-5 (7), normal or sometimes bulb-forming. Calluses terete or slightly dorsally compressed; lemmas 3-6 mm, lanceolate, distinctly keeled, glabrous or the keels and marginal veins, and sometimes the lateral-veins, hairy, intercostal regions glabrous or hairy, apices acute; anthers 3, 1.2-3 mm, aborted or undeveloped in bulbiferous spikelets.

Discussion

Members of Poa subsect. Halophytae have spikelets that resemble those in other sections of Poa more closely than those of subsect. Secundae, being shorter and more compressed than those of that subsection.

Selected References

None.

Lower Taxa

"decumbent" is not a number.

... more about "Poa subsect. Halophytae"
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 +  and scarious +
Adaxial surface pubescence
puberulent +, hispidulous +, hairy +  and glabrous +
Anther atypical quantity
1 (?) +  and 2 (?) +
Anther atypical some measurement
5 cm50 mm <br />0.05 m <br /> (?) +
Anther quantity
3 +
Anther some measurement
0.12 cm1.2 mm <br />0.0012 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Apex coloration
scarious-hyaline +
Apex shape
acute +  and acuminate +
Arm cell presence
absent +
Auricle presence
absent +
Author
Robert J. Soreng +
Authority
V.L. Marsh ex Soreng +
Awn atypical quantity
1 (?) +  and 3 (?) +
Awn course
straight +
Awn orientation
arising +
Awn position
basal +  and terminal +
Awn quantity
single +
Awn shape
bent +
Back shape
keeled +  and rounded +
Basal floret quantity
1 +  and 2 +
Basal sheath pubescence
strigose +  and glabrous +
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 architecture or pubescence or relief
smooth +
Blade arrangement
parallel +
Blade arrangement or course or shape
linear +
Blade duration
persisting +
Blade life cycle
withering +
Blade prominence
not evident +
Blade pubescence or relief
scabrous +
Blade pubescence or texture
soft +
Blade shape
involute +, folded +  and flat +
Blade texture
firm +
Blade width
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Branch architecture
sulcate +
Branch atypical quantity
7 (?) +
Branch orientation
erect;spreading +
Branch pubescence
hispidulous +, glabrous +, smooth or +  and sparsely densely scabrous +
Branch quantity
2;7 +
Branch shape
angled +  and terete +
Branch some measurement
0.5 cm5 mm <br />0.005 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Callus development
developed +
Callus pubescence
with a crown +  and glabrous +
Callus shape
compressed +  and terete +
Culm architecture
unbranched +  and hollow +
Culm architecture or arrangement or growth form
solitary +
Culm duration
annual +
Culm fragility or size
stout +
Culm growth form
climbing +
Culm growth form or location
floating +
Culm orientation
ascending +  and erect +
Culm shape
compressed +, terete +  and capillary +
Culm some measurement
5 cm50 mm <br />0.05 m <br /> (100 cm1,000 mm <br />1 m <br />) +
Culm texture
not woody +
Distal floret size
reduced +
Distribution
Ill. +, Ind. +, Conn. +, N.J. +, N.Y. +, Ga. +, Wash. +, Utah +, Alaska +, Colo. +, Idaho +, N.Mex. +, Nev. +, Maine +, N.H. +, Vt. +, Del. +, D.C +, Wis. +, Iowa +, Mont. +, Oreg. +, Wyo. +, Pacific Islands (Hawaii) +, Md. +, Mass. +, R.I. +, Fla. +, Calif. +, W.Va. +, Tex. +, La. +, N.C. +, N.Dak. +, Nebr. +, Tenn. +, Ala. +, Ark. +, Ariz. +, Kans. +, Ky. +, Mich. +, Minn. +, Mo. +, Miss. +, Ohio +, Okla. +, Pa. +, Puerto Rico +, S.C. +, S.Dak. +, Va. +, Alta. +, B.C. +, Greenland +, Man. +, N.B. +, Nfld. and Labr. +, N.S. +, N.W.T. +, Nunavut +, Ont. +, P.E.I. +, Que. +, Sask. +  and Yukon +
Embryo quantity
1/4 +  and 1/3 +
Endosperm texture
liquid +, soft +  and hard +
Filament shape
capillary +
Floret architecture
pistillate +  and staminate +
Floret arrangement
adjacent +
Floret atypical quantity
7 +
Floret length or size
sometimes longer +
Floret position or shape
distal +
Floret quantity
3 +  and 5 +
Floret reproduction
bisexual +
Floret shape
compressed +
Floret size
reduced +
Floret variability
sometimes +  and normal +
Glume architecture
1-3(5)-veined +
Glume architecture or pubescence or relief
smooth +
Glume architecture or shape
awned +
Glume height or length or size
shorter +
Glume length or size
shorter or longer +
Glume position
subtending +
Glume presence
absent +
Glume pubescence or relief
scabrous +
Glume quantity
2 +
Glume shape
lanceolate +  and broadly lanceolate +
Glume size
unequal +
Glume variability
equal +
Hair arrangement
distributed +
Hair shape
uncinate +
Hair some measurement
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Hilum arrangement or course or shape
linear +
Hilum coloration or relief
punctate +
Hilum position
subbasal +
Hilum quantity
0 +  and 1/6 +
Hilum shape
Oval (?) +  and Round (?) +
Inflorescence architecture
compound +
Inflorescence position or structure subtype
terminal +
Inflorescence shape
racemelike +
Inflorescence size
reduced +
Intercostal region architecture
5-7(11)-veined +
Intercostal region coloration
milky white +  and slightly greenish +
Intercostal region pubescence
hairy +  and glabrous +
Internode architecture
hollow +
Internode presence
absent +
Keel architecture or pubescence or relief
smooth +
Keel prominence
indistinct +
Keel pubescence or relief
scabrous +
Lateral-vein prominence
faint +
Layer presence
absent +
Leaf arrangement
distichous +
Leaf margin arrangement
Overlapping (?) +
Lemma architecture
5(7-11)-veined +
Lemma architecture or shape
awned +
Lemma arrangement
adjacent +
Lemma height or length or size
shorter +
Lemma length or size
longer +
Lemma position relational
exceeding +
Lemma pubescence
hairy +  and glabrous +
Lemma shape
keeled +  and lanceolate +
Lemma size
subequal +
Lemma some measurement
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Lemma texture
membranous +
Ligule architecture
erose +  and entire +
Ligule atypical some measurement
10 +
Ligule coloration
white +  and milky white or hyaline +
Ligule presence
absent +
Ligule pubescence
ciliolate +  and smooth +
Ligule shape
lacerate +, truncate +  and acuminate +
Ligule some measurement
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Ligule texture
membranous +
Lodicule architecture
veined +
Lodicule architecture or pubescence or shape
ciliate +
Lodicule architecture or shape
truncate +
Lodicule prominence
inconspicuous +
Lodicule pubescence
glabrous +
Lodicule quantity
2 +
Lodicule shape
lobed +  and lanceolate +
Lodicule texture
membranous +
Lower glume architecture
3-veined +
Margin character
length +
Margin coloration
milky white +  and slightly greenish +
Margin pubescence
glabrous +, scabrous +  and smooth +
Midrib architecture
simple +
Node position
exserted +
Node prominence
concealed +  and prominent +
Node quantity
0 +  and 5 +
Node shape
terete +
Number of lower taxa
3 +
Other quantity
2 +  and 1 +
Ovary presence
absent +
Ovary pubescence
glabrous +
Palea development
well-developed +
Palea presence
absent +
Palea quantity
2/3 +
Palea shape
2-keeled +
Palea size
subequal +
Panicle architecture
open +
Panicle architecture or arrangement
congested +  and lax +
Panicle atypical some measurement
25 cm250 mm <br />0.25 m <br /> (?) +
Panicle condition or size
contracted +
Panicle orientation
erect +
Panicle shape
pyramidal +, narrowly lanceoloid +  and ovoid +
Panicle size
reduced +
Panicle some measurement
3 cm30 mm <br />0.03 m <br /> (18 cm180 mm <br />0.18 m <br />) +
Papilla presence
absent +
Pericarp arrangement
separating +
Pericarp condition or texture
dry +
Pericarp texture
dry +  and fleshy +
Pericarp width
thin +
Pseudopetiole development
not developed +
Pseudopetiole presence
absent +
Rachilla internode pubescence
pubescent +, glabrous +, scabrous +  and smooth +
Rachilla length
prolonged +
Rachis prominence
evident +
Reference
None +
Sheath architecture
open +
Sheath architecture or pubescence or relief
smooth +
Sheath condition
closed +
Sheath length
closed +
Sheath pubescence or relief
scabrous +
Sheath shape
terete +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V24/V24 834.xml +
Spike architecture
ebracteate +
Spikelet architecture
bulbiferous +
Spikelet arrangement
mixed +
Spikelet atypical quantity
120 (?) +
Spikelet atypical some measurement
4 +
Spikelet fixation
attached +
Spikelet quantity
7 +  and 100 +
Spikelet reproduction
viviparous +
Spikelet shape
compressed +, lanceolate +  and narrowly ovate +
Spikelet some measurement
0.45 cm4.5 mm <br />0.0045 m <br /> (1 cm10 mm <br />0.01 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 quantity
2 +
Subsidiary-cell architecture
parallel-sided +
Synonyms
Gramineae +
Taxon family
Poaceae +
Taxon name
Poa subsect. Halophytae +
Taxon parent
Poa sect. Secundae +
Taxon rank
subsection +
Terminal floret reproduction
sexual +
Tissue coloration
hyaline +
Tissue texture
membranous +
Tuft quantity
1 +
Vein arrangement
parallel +  and converging +
Vein presence
absent +
Vein quantity
2 (?) +
Vein size
major +
Volume
Volume 24 +
Whole organism architecture
not rhizomatous +  and not stoloniferous +
Whole organism arrangement
mixed +
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
unisexual +
X chromosome quantity
7 +