Part 2, 1917] AMARANTHACEAE 121 
posed of numerous slender, erect or drooping, densely flowered spikes 3-9 cm. long and 6 mm. 
thick; pistillate flowers in narrow, elongate, axillary and terminal, naked or leafy panicles 
of slender, erect or drooping, loosely flowered spikes 6-15 cm. long and 5~7 mm. thick; 
sepals ovate or oval, 3 mm. long,.acute, scarious, l-nerved, with spreading mucronate tips, 
twice as long as the broadly‘ ovate scarious bracts; bracts of the pistillate flowers equaling or 
longer than the utricle, ovate to subulate, rigid, attenuate to a pungent tip, green; stigmas 3-5, 
short and stout; utricle obovoid or turbinate, 1.5-2.5 mm. long, fleshy, indehiscent, 3—5-angled; 
seed flattened, 1 mm. in diameter, rotund or obovate, minutely granulate, nearly black. 
TYPE LOCALITY: Jamaica. 
Disrripution: In brackish marshes, Florida to Louisiana; Jamaica; Colima. 
3. Acnida floridana S. Wats. Proc. Am. Acad. 17: 376. 1882. 
Plants glabrous throughout, or sparsely villous on the younger parts; stems slender, erect 
or ascending, 4-15 dm. long, simple, or branched at the base, pale-green, smooth or striate; 
leaves few and remote, the petioles 4-30 mm. long, slender, the blades linear, oblong-linear, or 
narrowly oblong, 0.8-10 cm. long, 2-10 mm. wide, rounded at the apex, attenuate at the base, 
pale- or yellowish-green; spikes 1-5 dm. long, very slender, 3-10 mm. thick, composed of numer- 
ous, usually remote, sometimes approximate, sessile, few-flowered clusters, flexuous, often 
recurved; sepals oval or ovate, 2 mm. long, obtuse to acute, mucronate, thin, longer than the 
triangular-lanceolate bracts; bracts of the pistillate flowers lanceolate or ovate, rigid, equaling 
or shorter than the utricle, green, often tinged with red, pungent; utricle 1.2 mm. long or less, 
3-angled, thin but somewhat fleshy, more or less rugulose, often tinged with red; seed rotund, 
0.8 mm. in diameter, smooth, black and shining. 
TYPE LOcALIty: Key West, Florida. 
DISTRIBUTION: Florida, 
4. Acnida concatenata Mog.; Small, Fl. SE. U. S. 393. 1903. 
Acnida cannabina concatenata Mog. in DC. Prodr. 137: 278. 1849. 
Montelia tamariscina concatenata A. Gray, Man. ed. 2.370. 1856. 
Acnida tamariscina concatenata Uline & Bray, Bot. Gaz. 20:158. 1895. 
Plants glabrous throughout; stems stout, erect or ascending, 5-20 dm. high, pale-green, 
striate-angled, with numerous ascending branches; leaves rather numerous, the petioles slender, 
1.5~-3 cm. long, the blades lanceolate or elliptic, 2.5-8 cm. long, 0.5—-2 cm. wide, usually attenu- 
ate to the obtuse or truncate, often emarginate apex, yellowish-green; staminate spikes slender, 
terminal or axillary, 5-14 cm. long, 5-8 mm. thick, erect or drooping, naked, small sessile 
clusters present also in the axils of the upper leaves; pistillate flowers in slender or stout spikes 
10-40 cm. long and 8-18 mm. thick composed of numerous, very densely many-flowered, 
remote or contiguous heads, large heads of flowers present also in the axils of the upper leaves; 
sepals oblong to oval or ovate, 1.5-2 mm. long, obtuse or acutish, scarious, 1-nerved, the outer 
ones sometimes mucronate, 2-3 times as long as the lanceolate or ovate bracts; bracts of the 
pistillate flowers shorter than the wtricle, lanceolate to linear, rather rigid, pungent; stigmas 3, 
elongate; utricle 1.5 mm. long, obovoid, fleshy, indehiscent, acutely trigonous, smooth or 
roughened; seed obovate, 1 mm. long, black and lustrous, smooth. 
TYPE LOcALIty: Louisiana. 7” 
DISTRIBUTION: Sandy banks, coast of Louisiana. 
5. Acnida alabamensis Standley, sp. nov. 
Plants glabrous throughout; stems stout, erect, 15-18 dm. high, branched above, succu- 
lent, smooth or sulcate; leaves few, the petioles slender, 1-4.5 em. long, the blades oblong- 
lanceolate to narrowly ovate or narrowly elliptic, 4-9 cm. long, 0.7-2.5 cm. wide, attenuate or 
acuminate to an obtuse tip, acute to attenuate at the base, yellowish-green; staminate flowers 
in open, nearly naked panicles composed of few slender, loosely flowered, drooping spikes 
4-12 cm. long and 4-6 mm. thick; pistillate flowers in sparsely leafy panicles of slender, densely 
