42 Plantaginaceae 1. Plantago A. lvs. 1-10 in. long, 5-9 veins, smooth and broad Plantago major L. AA. lvs. 1-18 in. long, 3-5 veins, hairy and narrow Plantago lanceolata L. 15 Gramineae Subfamily I. Festucoideae Ia. Spikelets (flowers) perfect, spikelets pedicellate and one flowered ......... Tribe V Agrostideae Ammophila Sporobolus Polypogon Ib. Spikelets perfect, pedicellate, spikelets two to many flowered, glumes shorter than first floret.... Tribe II Festuceae Eragrostis Foag Ic. Spikelets one to several flowered, sessile on opposite sides of a jointed or continuous axis forming symmetrical spikes............. Tribe III Hordeae Lepturus Subfamily II. Panicoideae Id. Spikelets perfect, spikelets on one side of rachis; spike usually more than one ........... Tribe VII Chloridae Chloris Cynodon Eleusine Ie. Glumes membranaceous, the sterile lemma like the glumes in texture, fertile lemma and palea indurate or at least firmer than the glumes ........... Tribe XII Paniceae Cenchrus Digitaria Panicum Paspalum Rhynchelytrum Setaria Stenotaphrum 3. Cyperaceae A. Flowers all uniform, spikelets uniform .... B. B. Scales of the spikelet strictly 2-ranked, conduplicate and