156 REPORT OF NEW JERSEY STATE MUSEUM. 



SSSSS- Flowers inconspicuous, in an open pani- 

 cle, scattered singly or clustered in 

 heads (panicle sometimes congested), 

 green or brownish. Leaves grass-like 

 or awl-shapcd and whole plant resem- 

 bling a sedge. Juncacea, p. 328 

 ee. Leaves cauline. 



/. Leaves oval, ovate, etc. (at least 25 mm. wide). 

 g. Flowers green, in a large open panicle. 



Veratrum, p. 342 

 gg. Flowers white, small, star-shaped. 

 h. In a dense slender spike. 



Chanuelirium, p. 341 

 hh. In a compact terminal panicle. 



i. Parts in six. Vagnera, p. 348 



ii. Parts in four Unifolium, p. 349 



ggg. Flowers white or yellow, bell-shaped. 



h. Single yellow. Uvularia, p. 343 



hh. In umbels, white Polygonatum, p. 349 

 ff. Leaves sagittate, flowers blue. 



Pontederia, p. 327 

 fff. Leaves uniform, flowers small, from a leafy 

 spathe. Heterantliera renifortnis, p. 327 



ffff. Leaves grass-like or long linear, sword-like 

 (never as much as 25 mm. wide). 

 g. Flowers without a perianth, very minute. 

 h. Flowers in dense terminal spikes 

 (cattails). Typha, p. 158 



hh. Flowers globular umbels of stamens 

 or pistils. Sparganium, p. 159 



hhh. Flowers in a slender dense spike 

 (a spadix) on the side of a flat leafy 

 scape. Acorus, p. 317 



gg. Flowers with conspicuous perianth. 

 h. Flowers in a spike. 



i. Yellow with chaffy bracts. 



Abama, p. 338 

 ii. White or greenish-white. 

 ;'. Stem glutinous. 



ToUeldia, p. ZZ7 

 jj. Stem not glutinous. 



k. Leaves grass-like, harsh, 

 in a dense tuft. 



Xerophyllum, p. 339 

 kk. Leaves linear, 18 mm. 

 broad, smooth. 



Chrosperma, p. 341 

 hh. Flowers in an umbel or solitary. 

 »". Sepals green, petals blue. 



Tradescontia, p. 325 



