STANDLEY—TROPICAL AMERICAN PHANEROGAMS. 89 
than a few new species would be discovered. Some of these have 
been published during the past year. A considerable number of 
others, chiefly in the genera Iresine and Achyranthes, are described 
in the present paper. The name Achyranthes is here used for the 
genus generally known as Alternanthera. The reasons for the use 
of the name in this sense the writer has recently explained at length.? 
He has also published a synoptic account of the North American 
representatives of the family.* 
Achyranthes panamensis Standley, sp. nov. 
Stems weak and probably clambering over shrubs, herbaceous, much branched, 
the branches slender, angulate, short-pilose with solitary or fasciculate, spreading 
or reflexed hairs; petioles 1 to 4 mm. long; leaf blades oblong-elliptic or ovate- 
oblong, 2 to 5.5 cm. long, 0.6 to 2 cm. wide, acute or acuminate, acutish at the base, 
firm, bright green, appressed-pilose on both surfaces with short slender fulvous hairs; 
peduncles axillary and terminal, simple or usually branched, 1 to 6 cm. long, slender, 
densely short-pilose; spikes usually solitary, globose-ovoid or short-cylindric, 8 to 11 
mm. long, 7 mm. thick; bracts broadly ovate, acuminate, glabrous; bractlets broadly 
ovate, half as long as the sepals, aristate-acuminate, sparsely short-villous; sepals 
lance-oblong, 2.5 mm. long, acute or acutish, 3-nerved, purplish (brownish or fuscous 
when dry), glabrous; filaments short, linear-subulate; staminodia equaling or exceed- 
ing the anthers, two-thirds as long as the sepals or shorter, lacerate at the apex; style 
short, the stigma entire; seed subglobose, 1 mm, long, black and shining. 
Type in the Herbarium of Columbia College (New York Botanical Garden), collected 
in Panama by Sutton Hayes (no. 944). 
In floral characters this plant is similar to Achyranthes mexicana (Schlecht. & Cham.) 
Standley, but in that species the slender peduncles are simple and the flowers are 
white or slightly stramineous. 
Achyranthes williamsii Standley, sp. nov. 
Stems herbaceous, clambering over shrubs and herbs, sparsely branched, the 
branches stout, striate, cinereous-puberulent; petioles stout, 2 to 10 mm. long: leaf 
blades oblong, ovate-oblong, or rarely elliptic, 2.5 to 8 cm. long, 8 to 33 mm. wide, acute, 
acutish, or obtuse at the apex, acute or obtuse at the base, pubescent on both surfaces 
with very short, lightly appressed hairs, bright green, rather thick; peduncles axillary, 
simple or rarely branched, 2 to 6 cm. long, stout, cinereous or glabrate; heads solitary, 
short-cylindric or ovoid, 1 to 3 cm. long, 10 to 12 mm. thick; bracts broadly ovate, 
acuminate, glabrous; bractlets half as long as the sepals, ovate, aristate-acuminate, 
short-pilose; sepals narrowly lance-oblong, 5 mm. long, acuminate, whitish or stramin- 
eous, 3-nerved, short-pilose, the tips slightly spreading; filaments very short, the 
staminodia ligulate, longer than the anthers and slightly shorter than the sepals, 
lacerate at the apex; style evident, the stigma entire. 
Type in the U. 8. National Herbarium, no. 678206, collected near Citura, Panama, 
April 14, 1908, by R. S. Williams (no. 675). 
1 Standley, Paul C. New or notable species of Amaranthus. Bull. Torrey 
Club 41: 505-510. 1914. A new species of Achyranthes from Tobago. Proc. 
Biol. Soc. Washington 28: 87. 1915. 
The application of the generic name Achyranthes. Journ. Washington Acad. 
Sci. 5: 72-76. 1915. 
®The North American tribes and genera of Amaranthaceae, Journ. Wash- 
ington Acad. Sci. 5: 591-396. 1915. 
