FAMILY KEY 9 



JJ. Flowers with green or colored perianth which is not chaff nor hair-like nor 

 bristle-like. 



O. Leaves without petiole, sheathing at base; sheath dilated and projecting 

 as stipular points where it joins the blade; ovary superior; perianth small, 

 green, not flower-like. JUNCAGINACEAE (p. 35) 



OO. Leaves often petioled, sometimes sheathing at base, but in such case the 

 sheath not projecting as stipular points where it joins the blade ; ovary supe- 

 rior or inferior; perianth often conspicuous and colored, flower-like even 

 when greenish. 

 P. Ovary superior; flowers regular. 



See MELANTHACEAE, LILIACEAE, and CONVALLARIACEAE (p. 52) 

 PP. Ovary inferior; flowers regular or irregular. 



Q. Leaves equitant; flowers regular; stamens and style not coherent; 



anthers 3. IRIDACEAE (p. 65) 



QQ. Leaves not equitant; flowers irregular; stamens and style coherent; 



anthers 1-2. ORCHIDACEAE (p. 66) 



GROUP 2 Monocotyledons with wide leaves 



A. Plant with a skunk-like odor ; leaves 3-10 dm. long, oval : flowers forming a 

 fleshy cone (spadix) 5-15 cm. long, surrounded by a bright yellow leaf (spathe). 



Lysichiton in ARACEAE (p. 51) 

 AA. Plant without skunk-like odor; leaves either not oval or smaller; inflorescence 



not as above. 



B. Leaves more than 2, all basal, ovate or oval to triangular-sagittate ; petioles 

 rather long; growing in mud or water along ponds. ALISMACEAE (p. 35) 



BB. Leaves not as above in all points. 



C. Plant submerged, although sometimes with floating leaves; flowers in spikes, 

 inconspicuous. Potamogeton in NAIADACEAE (p. 34) 



CC. Plant not submerged, although occasionally growing in wet places; flowers 

 sometimes in spikes, mostly conspicuous. 

 D. Perianth regular ; ovary superior except in IRIDACEAE. 

 E. Flowers enveloped by chaffy bracts and without other perianth; bracts of 

 the perianth green or brown, less than i cm. long ; plants rushlike or grasslike. 



JUNCACEAE (p. 52) 



EE. Flowers with white or colored corolla or perianth ; perianth not chaffy, 

 mostly more than i cm. long; plants mostly not rushlike but often grass- 

 like. 



F. Ovary superior; leaves mostly not equitant; either stamens 4 or 6, or 

 else 3 and also 3 staminodia. 

 G. Herbs, without tendrils. 



See MELANTHACEAE, LILIACEAE, and CONVALLARIACEAE (p. 52) 

 GG. Climbing shrubs, with stipular tendrils. SMILACEAE (p. 64) 



FF. Ovary inferior; leaves equitant; stamens 3; staminodia none. 



IRIDACEAE (p. 65) 

 DD. Perianth irregular; ovary inferior. ORCHIDACEAE (p. 66) 



