"C 
NEW SPECIES OF SOUTH AMERICAN PLANTS 7 
Dioscorea Herbert-Smithii. 
Inflorescence and veins of lower Tet of young leaves. 
minutely puberulent. Branchlets slender, terete, the inter- 
nodes about 7 cm. long. Petioles of full-grown leaves 5 cm. 
long, narrowly channelled above and sulcate on the sides, the 
b 7 to 12 cm. | to 10 broad, regularly ovate and 
, . TE 
cordate, the basal lobes regularly rounded, broader than the 
sinus, which is also rounded, the summit abruptly short-acumin- 
ate and very acute; 5- -ribbed, the 2 outer pair basal only, the 
the base. Staminate flowers sessile or sub-sessile, 3 mm. broad, 
the base 3-bracteolate, the bracts scarious, broadly ovate, 
obtuse, half as long as the EM which is divided half way, 
in Mp ovate, obtusish. Stamens 6, the broad filaments con- 
te short saucer-shaped t tube, the anther-cells contiguous. 
Pistillate flowers similarly bracteolate, the ovary oblong, 3 
mm. long, the lobes of the perigone erect, about half as long as 
the bet M d ovate, obtuse. Staminodia none. Style 
branches ire. 
“Twining to I5 feet in a thicket, border of woods, 6 miles 
from Mamatoca, 500 feet, April 10. Flowering earlier than 
2302." (Herbert Smith, Colombia, No. 2301.) 
A Dioscorea Sepen, 
(Staminate Plan 
slender, strongly kate, the ridges obtuse, the mtenda 
ioles 
both sometimes wanting, the middle lobe 6 to 10 cm. lon 25 
to 6 cm. broad, regularly ovate, the base little contracted, the 
ummit acuminate and acute, 3-ribbed, the lateral lobes in- 
equilaterally lanceolate, 2-ribbed or with 2 additional lighter 
ones, acuminate and acute, the coarsely reticulate venation not 
conspicuous. Axillary inflorescence very loosely paniculate, 
the racemes 6 to 12 cm. long, very slender, loosely flowered, 
Se at py thin, weak, lanceolate attenuate bracts about 
3 mm. lon Pedicels very slender, 2 to 3 mm. long, their bracts 
about half : as long. Flowers 3 mm. broad, lobed nearly to the 
base, the lobes oblong, obtusish, with a slender greenish middle 
