Poaceae

Pooideae

Chloridoideae
Aeluropodeae
Chlorideae
Eragrosteae
Blepharidachne
Blepharoneuron
Calamovilfa
Dactyloctenium
Dasyochloa
Eleusine
Eragrostis
Erioneuron
Leptochloa
Lycurus
Monroa
Muhlenbergia
Redfieldia
Scleropogon
Sporobolus
Trichoneura
Tridens
Triplasis
Tripogon
Triraphis
Vaseyochloa
Unioleae
Zoysieae
Panicoideae

Arundinoideae

Bambusoideae

Home

Inflorescences

Dissections:
Triplasis purprurea

TRIPLASIS Beauv.
Plants hermaphroditic, caespitose or rhizomatous, annual (ours) or perennial. Culms erect, glabrous or hairy; internodes solid, terete. Leaves cauline; sheaths terete, margins open; auricles absent; ligules a line of hairs; blades flat or involute, not pungent. Panicles open (exserted or included in sheath); primary branches spreading, terminating in a spikelet. Cleistogamous spikelets in axillary panicles of sheaths. Spikelets solitary, laterally compressed, awned, pedicellate; pedicels without glands; disarticulation above glumes; florets 2 - 5, callus hairy; reduced florets at apex; glumes 1-veined, unequal, second glume shorter or equal to first floret, glabrous; lemma 3-veined, membranous, lobed, awned (lateral veins extending to mucros), glabrous (except pilose at base), veins hairy; paleas 2-veined, awnless, pilose on upper half. Stamens 3; anthers reddish purple. Caryopses dorsiventrically compressed; pericarp striate, reddish. Base chromosome number x=10.

A genus of two species native to North and Central America. These species are adapted to sandy soils.