GLEASON: CENTROPOGON, SECTION BURMEISTEROIDES 447 
branous, bright green, abruptly acuminate, cuneate or acute 
pilos he surface and densely so the veins beneath, the 
hairs straight, appressed, 0.4 mm. , forming conspicuous 
belts along the veins; peduncles from the upper axils 1 
- mm. wide when pressed, puberulent; sepals triangular, 6 
long, 2.5 mm. wide at the base, pubescent on both sides, with 
cnt three pairs of low callous teeth, separated uve narrow 
ounded sinuses; corolla puberulent, the tube 25 mm. lon 
a Oy slender, the lobes linear-o blong, falcate, depressed 
filaments glabrous, included; anther-tube 8 mm. long, su 
tomentose on the sutures, the two lower anthers villous at the 
apex 
oe Pennell 10,734, collected 18, 19 Sept. 1922, at Buenos 
Aires, north of Supia, Dept. Caldas, Colombia, altitude 2000- 
2200 m., and deposited in the herbarium of the New York 
Botanical Garden. Four other sheets are also referred here, 
which differ so much from the type as to suggest the specific 
name variabilis. These differences do not appear to warrant 
the recognition of additional species but indicate merely a 
considerable degree of variability. In Pennell 3409, Libano, 
Dept. Tolima, 26-29 Dec. 1917, the leaves are proportionately 
narrower and the serrations lower; in Pennell 10,324, Rio San 
Rafael; below Cerro Tatama, Dept. Caldas, 7-11 Sept. 1922, 
the leaves are smaller, thicker, and blunter; in Pennell 10,325, 
same place and date, the small leaves are almost obovate, while 
Pennell 4397, Cascada Chorron, south of Antizales, Dept. Bolivar, 
25 Feb. 1918, is a fragmentary specimen without flowers. 
I have not seen the type of Karsten’s Burmeistera tomentosula, 
which was imperfectly described. It may be similar to our 
species. 
entropogon gravidus n. sp. Stem _ herbaceous, hollow, 
strongly angled, densely pubescent with straight spreading hairs 
with black septa; petioles i densely pubescent, 10-13 m 
long; leaf-blades elliptic-oblong, firm, dull-green, 13-23 cm 
ong, 3-7 cm. wide, ices acuminate to long acuminate 
tapering to an acute or cuneate base, coarsely, sharply, and 
infegieny venaig SS above . ic with fHangolat 
teeth as much a ong (about 2 teeth per centimeter of 
margin) to pci ean Bt Doe ee with straight, stiff, 
