Dichanthelium yadkinense (Ashe) Mohlenbrock. Spotted-sheath Witchgrass. Phen: May-Oct. Hab: Floodplain forests, thickets, bottomlands, and swamps, often on alluvial deposits. Dist: NJ and MI south to GA and TX; Mexico.
ID notes:Sheaths often with wart-like glands. This taxon resembles D. species 9 (=cryptanthum), from which it differs most readily by its hairy ligule (vs. membranous) and smooth peduncle (vs. antrorsely scabrous).
Origin/Endemic status: Native
Synonymy: = Il, Pa, Va, LeBlond (2001a); = Dichanthelium dichotomum (L.) Gould ssp. yadkinense (Ashe) Freckmann & Lelong – FNA25; = Panicum dichotomum L. var. yadkinense (Ashe) Lelong – Lelong (1984); = Panicum yadkinense Ashe – C, F, G, HC, S, WV; < Dichanthelium dichotomum (L.) Gould var. dichotomum – K1, K3, K4, Gould & Clark (1978); < Panicum dichotomum L. – GW1, NcTx, RAB
Heliophily: 5
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