AMARAXTACE.E. (AMARANTH FAMILY.) 401 



1. S. crassipes, Moquin. Smooth; stem erect, branching ; leaves obo- 

 vate, obtuse ; clusters shorter than the petiole ; sepals much longer than the 

 s;rongly keeled bracts, spatulate, obtuse, enclosing the granular-roughened 

 utricle. South Florida. @ Stem 1 - 2 high. Leaves 1' long. 



6. ACNIDA, Mitchell. 



Flowers dioecious, 3-bracted. Calyx of the stamiuate flower 5-sepalous, of 

 the pistillate none. Stamens 5, free. Anther cells united only in the middle. 

 Stigmas 3-5, spreading. Utricle 3 - 5-angled. Seed obovate. Tall gla- 

 brous marsh annuals, with alternate entire loug-petioled leaves, and scarious 

 flowers clustered in axillary and terminal spikes. 



* Utricle somewhat fleshy, indehiscent, longer than the bracts. 



1. A. cannabina, L. Stem branching above, 4 -8 high; leaves lanceo- 

 late or ovate-lanceolate, acuminate, 3' - 5' long ; spikes slender, loosely flowered ; 

 stigmas long, plumose ; utricle ovate or obovate, acutely 3 -5-angled, \" long; 

 seed compressed. Marshes along the coast, Georgia, and northward. Oct. - 

 Nov. 



2. A. rusocarpa, Michx. Stigmas shorter; utricle larger (!"- 2" 

 long) and more fleshy, with the angles obtuse and often rugulose ; otherwise 

 like the preceding, and same range. 



* * Utricle thin, equalling or shorter than the bracts, mostly dehiscent. 



3. A. australis, Gray. Stem very tall (6 -20 or more high), branch- 

 ing above ; leaves ovate-lanceolate, acuminate, 6' -12' long, the margins un- 

 dulate; fertile spikes numerous, short, densely flowered; utricle smooth and 

 even, acutely 3-angled, equalling the bracts ; seed compressed. Marshes near 

 the coast, Florida, and westward. Oct. - Nov. 



4. A. Floridana, Watson. Stem slender, simple or sparingly branched, 

 2-4 high ; leaves linear, or the lowest lanceolate, 2'- 4' long ; spikes single, 

 terminating the stem and branches, loosely flowered ; utricle rugulose, shorter 

 than the bracts ; seed turgidly lenticular. Sandy coast, Florida. Nov. 



7. IRESINE, Browne. 



Flowers perfect or dioecious, 3-bracted. Sepals 5. Stamens 5, united into 

 a cup at the base. Sterile filaments none : anthers 1-celled, ovate. Style very 

 short: stigmas 2 - 3, slender. Utricle roundish, I -seeded, indehiscent, included 

 in the calyx. Seed vertical, lenticular. Radicle ascending. Chiefly herbs, 

 with opposite petioled leaves, and scarious glossy flowers, disposed in single 

 or panicled spikes or heads. 



1. PIIILOXERUS. Flowers perfect, crowded in axillary and terminal heads. 



1 I. vermicularis, Moquin. Smooth ; stem much branched, prostrate 

 or creeping ; leaves club-shaped, fleshy, semi-terete ; heads mostly sessile, 

 ovate or globose, at length oblong or cylindrical, obtuse flowers white ; sep- 

 als obtuse, longer than bracts, the two exterior ones woolly at the base. 

 Sandy coast, South Florida. Stems 1- 2 long. Leaves ^' - 1 ' long. Heads 

 3" -8" long, mostly terminal and solitary. 



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