ALISMACEAE (WATER-PLANTAIN FAMILY) 



2 SCHEUCHZfeRIA SCHEUCHZERIA. (S. palnstris.) 



3 ALISMACEAE. Water-plantain Family. 



1 ALISMA WATER PLANTAIN. (A. plantago-agudtica.) 



2 SAGITTARIA. 



i a Leaves arrow-shaped with triangular, basal lobes 



BROAD-LEAVED ARROW-HEAD. (S. latifblia.) 

 b Leaves lanceolate or broadly arrow-shaped with very 

 narrow basal lobes 



SESSILE-FRUITED ARROW-HEAD. (S. rigida.) 

 c Leaves linear; flowers not more than 2 in. broad 



GRASS-LEAVED ARROW-HEAD. (S. graminea.) 



4 VALLISNERIACEAE. Tape-grass Family. 



1 PHIL6TRIA DITCH Moss. (P. canadensis.) 



2 VALLISNfcRIA TAPE-GRASS. (V. spiralis.) 



3 GRAMINALES. Grass Order. 

 i GRAMINACEAE. Grass Family. 



1 a Grasses cultivated in parks or gardens or in pots for 



their ornamental foliage or inflorescence 2 



b Grasses not cultivated as in a 7 



2 a Leaves 3-8 ft. long, mostly basal, tufted 



i. Cortaderia. p 118 

 b Leaves 3 ft. or less long 3 



3 a Leaves 2 ft. or more long 4 



b Leaves less than 2 ft. long 5 



4 a Leaves striped or banded with yellow; panicle 6-12 in. 



long 2. Miscanthus. p 118 



b Leaves striped or banded with white; panicle 1-2 ft. 



long 3. Erianthus. p 118 



5 a Leaves less than i in. broad, 4-10 in. long, linear 



54. Phalaris. p 122 

 b Leaves less than i in. broad, 2-5 in. long, narrowly 



lanceolate 53. Oplismenus. p 122 



c Leaves 1-3 in. broad 6 



6 a Leaves green, shining above; panicle 6-15 in. long 



4. Arundinaria. p 118 

 b Leaves usually variegated; panicle 1-2 ft. long 



5. Arundo. p 118 



7 a Staminate spikelets in terminal panicles; pistillate spike- 



lets in axillary spikes; plant cultivated for the grain 



6. Zea. p 118 

 b Spikelets not arranged completely as in a 8 



8 a Spikelets in a single, terminal, more or less cylindric or 



4-sided spike 9 



b Spikelets not arranged completely as in a 17 



112 



