AMARAXTACE.E. (AMARANTH FAMILY.) 401 



I. S, crassipes, Moquin. Smooth; stem erect, branchiug ; leaves obo- 

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

 strongly keeled bracts, spatulate, obtuse, enclosing the granular-roughened 

 utricle. — South Florida. (T) — Stem 1° - 2"^ high. Leaves I ' long. 



6. ACNIDA, Mitchell. 



Flowers dioecious, 3-bracted. Calyx of the staminate 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 long-petioled leaves, and scarious 

 flowers clustered in axillary and terminal spikes. 



* Utricle somewhat Jieshi/, 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, 1" long ; 

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

 Nov. 



2. A. rusocarpa, Michx. Stigmas shorter; utricle larger (\V'-2" 

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

 like the preceding, and same range. 



* * Utricle thin, equallinrj or shorter than the bracts, mostli/ 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 di(Bcious, 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, .'^lender. Utricle roundish, 1-seeded, indehiscent, included 

 in the calyx. Seed vertical, lenticular. Eadicle ascending. — Chiefly herbs, 

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

 or panicled spikes or heads. 



§ 1 . Philoxerus. Flowers perfect, croicded in axillari/ 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 l°-2°long. Leavesi'-l' long. Heads 

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



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