GRAMINACEAE 



Panicum 



' Lat. panicum, • pan v 



1. Plants glabrous throughout, 8 20 dm. high, 



2. Plants bristly pubes< enl al le isl or 



or spreading, 3 10 dm. high 



a. Annual, panicle ample, bram hi - long ind 



b. Perennial, panicle short, less than I 







PHALARID1 



A single genus (in late season) 





1 'halaris < !an u 

 (Gr. name -, from pnaios. 



1. Panicle very dense, spike-like; glumes winged •• 



2. Panicle branched; glumes not winged on the k.-.-l 



a. Leaves green 



b. Leaves striped with white 



ORYZEAE — RICE 1 RIBE 



1. Cultivated grass; glumes present, small 



2. Native grasses; spikelets monoecious, 



lacking 



a. Tall aquatic grass, pistillate spikelets at the summit ij 



b. Low marsh grass with closely row led spike! 



less inclosed 



ie sheaths 





A single cultivated 



Oryza— Rice 



Gr. oryz 



Zizania — Wild Rice, In<li;m Rice 



<<;r. zizanion. i fl 



1. Stems 2-.? m. high ; panicle open 



2. Stems about 1 m. high; panicle more appi 



■ 



Leersia — Cut-grass, White I 



(Named i'<>r the German bot 



1. Panicle simple, branches stiffly spreading; spikelets 2 1 mm 



2. Panicle twice branched; spikelets 4? nun. long 





CHLORIDEAE — GRAMA 



1. Tall marsh grass with long, sharp 



2. Prairie grass with short Muni edged leaves 



. 



A single species 



Spartina 



Gr. spnrtinf. 



Boul 



1. Spikes IS or more, pen 



2. Spikes 1 4 usuall) 



a. Leaves smooth 



b. Leaves hairy 





i 



