Abstract
Plants herbaceous. Annuals or perennials, caespitose, rhizomatous or stoloniferous, erect or decumbent. Culms hollow or solid. Ligule membranous, or a fringed membrane, or a fringe of hairs. Leaf blades lacking pseudopetioles or auricles. Inflorescences unbranched, or with unbranched primary branches, or with branched primary branches. Spikelets laterally compressed, with 1 to many flowers, the proximal ones fertile, the distal ones (if present) often reduced. Glumes 2, disarticulation above the glumes. Lemmas bilobed, awned from the sinus. Lodicules 2, fleshy. Caryopsis with the pericarp fused to the seed coat; hilum short, punctate; embryo with an epiblast, with a scutellar cleft, with an elongated mesocotyl internode, with the embryonic leaf margins not overlapping. Midrib anatomy simple. Mesophyll radiate, with a double bundle sheath. All species C4 except for Merxmuellera rangei, the ancestral condition probably C3. Bicellular microhairs with the distal cell narrow and elongate (“panicoid type”) to nearly spherical (“chloridoid type”).
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Kellogg, E.A. (2015). X. Subfamily Chloridoideae Kunth ex Beilschm. (1833). In: Flowering Plants. Monocots. The Families and Genera of Vascular Plants, vol 13. Springer, Cham. https://doi.org/10.1007/978-3-319-15332-2_24
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