ENCS407 Study Guide - Quiz Guide: Heteropogon, Ligule, Tripsacum Dactyloides
4 Oct 2018
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Subfamily: Panicoideae
Tribe: Andropogoneae
• Sterile florets
o Pedicelled, accompanied by a sessile, fertile floret
• Panicoid hairs common
Andropogon gerardii (P N)
• Awns geniculate, tightly twisted below
• Sometimes short rhizomes
• Sterile floret well developed
• 3-many spikelet branches, coming from the same point
• Confusions:
o A. gerardii vs. S. scoparium
▪ S. scoparium arises in singles
▪ A. gerardii has large sterile floret, S. scoparium has small sterile
Andropogon virginicus (P N)
• Each branch contained in a sickle shaped leaf bract
• Branches imbedded in sheaths
• Flattened leaves/base
• Panicoid hairs down edge of leaf sheath
Bothriochloa laguroides (P N)
• Panicle of 6 or more racemose branches
• Inflorescence singular + terminal
• Stem swelling especially evident
