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Arundinoideae
Aristideae
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Centotheceae
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Enneapogon
Pappophorum
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Dissections:
Pappophorum bicolor

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PAPPOPHORUM Schreb. Pappusgrass
Plants hermaphroditic, caespitose, perennial. Culms erect or ascending or geniculate, glabrous; internodes solid, terete. Leaves basal and cauline, not conspicuously distichous; sheaths terete, margins open; auricles absent; ligules a line of hairs; blades flat or folded or involute, not pungent, not attenuate. Panicles open or contracted (ours tight to loose); primary branches ascending or appressed, terminating in a spikelet. Cleistogamous spikelets present or absent in basal sheaths (highly modified). Spikelets solitary, laterally compressed or dorsiventrally compressed, awned, pedicellate, pedicels without glands; disarticulation above glumes; florets 4-5, callus hairy, reduced florets (2) above; glumes 1-veined (acute), nearly equal, shorter than or equaling first floret, glabrous; lemmas 11-15-veined, coriaceous, apex dissected into 11-17 awns of unequal length, awn glabrous or scabrous to hairy; paleas 2-veined (longer than lemma body), awnless or mucronate, scabrous to hairy. Stamens 3; anthers brown. Caryopses elliptic, dorsiventrally compressed. Base chromosome number x=10.

A genus of about eight species in North and South America. Our taxa are adapted to open, xeric habitats in grasslands or shrublands.