170 PROCEEDINGS OF THE AMERICAN ACADEMY 
men from Nicaragua, collected by C. Wright (N. Pacif. Expl. Exped. 
1853-56). The latter differs, however, in its larger flowers and more 
finely toothed leaves, which are more densely and roughly pubescent 
upon the upper surface. 
HeELiorropium Prinever. A spreading annual, branching from 
the base, 2 to 5 inches high, silky-villous: leaves elliptic-lanceolate, 
acute at both ends, 4 to 6 lines long, 2 lines broad; petioles 1 or 2 
lines long: flowers scattered along the leafy branches from near the 
base ; calyx-lobes lance-linear, acuminate ; corolla-tube 1 to 14 lines 
long, the limb abruptly expanding, 24 lines broad, with five acutish 
primary lobes, with which five short teeth alternate: fruit separable 
at maturity into fonr nutlets, minutely reticulate-roughened on the 
back but not hispid. — Santa Eulalia Mountains, Chihuahua. October, 
1886 (n. 1160); also in thin soil of rocky hills, Las Canoas, San Luis 
Potosi, July, 1890 (n. 3207). This species resembles in habit 
phyllostachyum, Torr., but has flowers more than twice as large. It 
is distinguished from H. limbatum, Benth., under which name n. 1160 
was distributed, by its broader leaves, very scattered flowers, more 
acute lobes of calyx and corolla, rougher nutlets, and its more decid- 
edly annual character. The inflorescence in H. limbatum is distinctly 
terminal and compact, and the root often clearly perennial. 
OMPHALODES ACUMINATA. Stem weak, procumbent, diffusely 
branched, nearly smooth, 18 inches long or more, leafy throughout : 
leaves deltoid, attenuate-acuminate, entire, 2 inches long, 15 lines in 
breadth, cordate with rounded lobes and broad sinus, membranaceous, 
nearly smooth above, puberulent with very short hairs beneath; the 
upper leaves smaller, lanceolate, subcordate or rounded at base; peti- 
oles 1 to 1} inches long: peduncles lateral, scattered, very slender, 
flexuous-spreading, 9 to 12 lines in length: calyx-lobes oblong, acute; 
corolla 4 or 5 lines broad, rose-color, with short tube and rounded 
spreading segments; scales very prominent, nearly globular, minutely 
papillose: nutlets orbicular, only one in each flower ripening, 14 lines 
in diameter at maturity, flat, horizontal over the gynobase, the wing 
reflexed, about 30-toothed.—In the Sierra Madre, near Monterey ; 
June, 1888 (n. 2220). Resembles 0. cardiophylla, Gray, but is 
smoother throughout and has much longer stems of more straggling 
habit, the leaves twice as large, of more delicate texture, and m 
more attenuate at the apex. In that species, moreover, two to four 
nutlets mature and the wing-borders have but half as many teeth. 
Tromaa Lronensts. Root tuberous, an inch thick; stem twining, 
striate-angulate, minutely roughened: leaves deeply palmntely 5-lobed, 
