142 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Rustia ferruginea Standley, sp. nov. 
A small tree; young branches stout, obtusely quadrangular, villous-puberulent 
with soft reddish hairs; stipules not seen, deciduous; petioles stout, very short, 1 to 
3 cm. long; leaf blades obovate or oval-obovate, 15 to 30 cm. long, 7 to 12 cm. wide, 
rather abruptly acute or acuminate, acuminate or attenuate at the base, firm, rather 
inconspicuously veined, the lateral veins numerous, parallel, meeting at their apices 
in a marginal vein, glabrous on the upper surface, densely puberulent beneath with 
ferruginous hairs; inflorescence a densely flowered, short-pedunculate, terminal pan- 
icle 8 to 10 cm. long and of about the same width, the branches abundantly puberu- 
lent; bracts deciduous; calyx broadly campanulate, 1.5 mm. high, puberulent out- 
side, the margin shallowly 5-lobed; corolla white, the tube 2 to 4 mm. long, slightly 
dilated above, glabrous outside, the lobes valvate, thick, about as long as the tube, 
lance-triangular, acute or acutish, puberulent, reflexed in anthesis, the throat of the 
corolla densely bearded within with coarse white hairs; stamens mostly concealed 
by the hairs of the corolla, the filaments subulate, the anthers erect, attached by the 
base; style exserted, shortly 2-lobed at the apex; ovary 2-celled; mature fruit not 
seen, 
Type in the U. S. National Herbarium, no. 679302, collected along the Rio Faté, 
Province of Colén, Panama, in forests or thickets, altitude 10 to 100 meters, August, 
1911, by H. Pittier (no. 4201). 
From all other species of the genus this differs in its ferruginous pubescence. 
Stachyarrhena heterochroa Standley, sp. nov. 
A small tree, 8 to 10 meters high, with a straight trunk, radiate branches, and a 
pyramidal crown; bark grayish, smooth; young branches stout, terete, lustrous, 
glabrous; stipules 2 to 3 mm. high, united and forming a truncate sheath; petioles 
stout, 2 to 3 cm. long; leaf blades oval to oblong-elliptic or rarely oblong-obovate, 
15 to 28 cm. long, 5 to 9 cm. wide, abruptly acuminate or sometimes caudate, the 
tip about 15 mm. long, acute at the base, coriaceous, glabrous, shining on the upper 
surface, the veins prominent, especially the midrib, the lateral veins 9 to 12 on each 
side; spikes pendulous, mostly terminal, 18 to 28 cm. long, glabrous, naked at the 
base for 4 to 7 cm., the flowers sessile, solitary and remote, or sometimes verticillate; 
calyx broadly campanulate, 2 mm. high, the margin very obscurely repand-denticu- 
late; corolla 8 mm. long, turbinate, purplish pink inside, pale pink or lavender out- 
side, the 5 lobes broadly oblong or rounded-oblong, slightly spreading, densely vil- 
lous within; stamens inserted on the middle of the tube, the filaments very short; 
stigmas broad, acute. 
Type in the U. 8. National Herbarium, no. 679174, collected in forests on Loma 
de la Gloria, near Faté, Province of Colén, Panama, altitude 10 to 100 meters, August, 
1911, by H. Pittier (no. 4078). 
The fruit, which was not collected, is said to be the color of a cherry. 
Only three other species of this genus have been described, all from Brazil. The 
Panama plant resembles Stachyarrhena penduliflora Schum.! in its pendulous inflo- 
rescence. That species, however, has yellow flowers, obtuse leaves, and a tubular 
corolla, 
1In Mart. Fl. Bras. 6°: 870. 1889. 
