Pogonarthria

Stapf
Treatment appears in FNA Volume 25. Treatment on page 105.
 TaxonIllustrator 
FNA25 P39B Pogonarthria pg 107.jpegPogonarthria squarrosaHana Pazdírková
Linda A. Vorobik

Plants annual or perennial; cespitose. Culms 13-100 (250) cm, not woody. Sheaths open; ligules of hairs or membranous and ciliate; blades flat or loosely involute. Inflorescences terminal, panicles of numerous spikelike branches on elongate rachises. Spikelets in 2 rows on 1 side of the flat or trigonous branch axes, with 2-8 florets, additional reduced florets sometimes present distal to the functional florets; rachilla internodes tipped with a few short hairs; disarticulation initially above the glumes and between the florets or the lemmas falling and the paleas persistent, subsequently at the bases of the panicle branches. Glumes unequal, shorter than the spikelets, keeled, acute to acuminate, unawned; lemmas 3-veined, keeled, membranous, acute, acuminate, or shortly awned; paleas shorter than the lemmas. Caryopses ellipsoid to fusiform, x = 10.

Discussion

Pogonarthria includes four species, all of which are native to tropical and southern Africa. One species has become established in Arizona.

Selected References

None.

"decumbent" is not a number.

... more about "Pogonarthria"
1 +  and 3 +
John R. Reeder +
1 (?) +  and 3 (?) +
multiple +, , +  and single +
keeled +  and rounded +
pseudopetiolate +  and branching +
not fused +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
not pseudopetiolate +
pubescent +  and glabrous +
involute +  and flat +
trigonous +  and flat +
spikelike +
ellipsoid +  and fusiform +
triangular +  and dome--shaped +
sometimes longer +
membranous +
ascending +  and erect +
13 cm130 mm <br />0.13 m <br /> (100 cm1,000 mm <br />1 m <br />) +
not woody +
not waisted +
capillary +
pistillate +  and staminate +
sometimes longer +
additional +, 2 +  and 8 +
bisexual +  and fertile +
round +  and compressed +
reduced +
shorter or longer +
subtending +
acute +  and acuminate +
unequal +
uncinate +
paniculate +  and racemose +
hollow +  and solid +
not absent +
awned +, acuminate +, acute +  and keeled +
membranous +
sometimes longer +
membranous +
inconspicuous +
concealed +  and prominent +
2 +  and 1 +
persistent +
dry +  and fleshy +
spikelike +
elongate +
1 +  and 60 +
compressed +
1 +  and 3 +
compound +  and simple +
2 (?) +  and 3 (?) +
Gramineae +
Pogonarthria +
Poaceae tribe Cynodonteae +
membranous +
7 (?) +  and 13 (?) +
perennial +  and annual +
plant +  and cespitose +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +