PLANTS OF SOUTHERN NEW JERSEY. 155 



a. Spadix naked, bright yellow, 

 raised above the water on a 

 thick scape, leaves usually float- 

 ing. Orontium, p. 317 

 hh. Flowers with a perianth, mostly 

 showy. 



i. Flowers in a large whorled pan- 

 icle, small, white. 



Alisma, p. 168 

 ii. Flowers in a remotely whorled 

 spike, large, white. 



Sagittaria, p. i6g 

 TO. Flowers in a dense spike, lilac 

 with blue anthers. 



Helonias, p. 340 

 gg. Leaves only two. 



h. Flowers single, lily-like, yellow, 



leaves spotted. Brythronium, p. 346 



hh. Flowers white, in an umbel, plant 



garlic scented, leaves absent at 



flowering time. 



Allium tricoccum, p. 344 

 fff. Leaves grass-like or long linear (never as 

 much as 25 mm. wide). 



g. Flowers in a remotely whorled spike or 



an umbel. Alismacece, p. 168 



gg. Flowers in a slender continuous spike. 



h. Leaves slender, grass-like, erect, 



flowers minute (spike resembling 



that of a plantain). 



Triglochin, p. 166 

 hh. Leaves lanceolate spatulate, form- 

 ing a rosette, flowers white, bell- 

 shaped, mealy. Aletris, p. 347 

 ggg. Flowers in a globular compact head. 



h. Head white, button-like, flowers 



minute. Eriocaulon, p. 323 



hh. Head of imbricated brown scales, 



flowers protruding, conspicuous, 



yellow. Xyris, p. 319 



gggg. Flowers conspicuous, star-shaped, in an 



open panicle. 



h. Flowers white, leaves glabrous. 



[Ornithogalum umbellatum]* 

 hh. Flowers yellow, leaves hairy. 



Hypoxis, p. 3SS 



* Star-of-Bethlehem, introducer in meadows. 



