98 PROCEEDINGS OF THE AMERICAN ACADEMY. 
shining above, conspicuously 3-5-nerved: petioles 1.5 to 3 cm. long, and 
as well as the stem strigose-pubescent: inflorescence a terminal com- 
pound corymbose cyme: heads small, about 5 mm. high, disposed in 
glomerules: involucral bracts ovate, obtuse, appressed-cinereous-pubes- 
cent, the outer shorter: ray-flowers mostly 3: mature achenes obovate, 
about 2 mm. long, glabrous: sterile flowers few, 3 to 5. — Costa Rica. 
Foréts de La Palina, altitude 1459 m., 8 September, 1898, Ad, Tonduz, 
no. 12,537 (hb. Gr., and hb. Inst. Phys.-Geog. Cost. Ri.). 
CLIBADIUM CARACASANUM, DC. Prodr. vi. 506. To this species 
the following collections may be referred: VenezueLa. Tovar, Fendler, 
no. 640 (hb. Gr.). Panama. Gatun Station, Sutton Hayes, no. 89 (hb. 
Gr.). Costa Rica. Cafias Gordas, H. Pittier, no. 11,068 (hb. Gr. 
and hb. Inst. Phys.-Geog. Cost. Ri.). 
ibadium glomeratum. Stem stout, densely soft-tomentose : 
leaves opposite, long-petiolate, ovate, 1 to 2 dm. long, 0.5 to 1.5 dm. 
broad, acute, crenately and somewhat unequally dentate, obtuse to sub- 
cordate at the base, scabrous-pubescent above, densely soft-pubescent 
_ beneath, 3-nerved from a point considerably above the base below which 
are two or three pairs of less conspicuous lateral nerves: inflorescence 
terminating the stem and branches in compound corymbose pubescent 
cymes: heads small, few-flowered, about 5 mm. high, disposed in dense 
glomerules 5-8 (—10) mm. in diameter : involucral scales oblong or ovate- 
oblong, 2 to 3 mm. long, glabrous, ciliate: ray-flowers mostly 5, in 1 to 
2 series : mature achenes narrowly obovate, about 2 mm. long, glabrous 
below, villous-pubescent above. — Costa Rica. Foréts de Luis, altitude 
650 m., November, 1897, Ad. Tonduz, no. 11,508 (hb. Gr., and hb. Inst. 
Phys.-Geog. Cost. Ri.), 
Clibadium Pittieri. Stem terete, appressed-pubescent: leaves op- 
posite, petiolate, ovate, 1 to 1.5 dm. long, 4 to 8 em. broad, acuminate, 
acute, dentate above the middle, entire and narrowed below into the 
1 to 6 cm. long petioles, hirsute-pubescent upon both surfaces, 3-5-nerved 
from just above the base: inflorescence terminating the stem and 
branches in corymbose clusters: heads about 5 mm. high: involucre of 
narrowly ovate acute strigose-pubescent bracts: ray-flowers several in 
about three series: mature achenes obovate, 2 mm. long, glabrous at 
the base, pubescent at the apex. — Costa Rrca. La Florida voie ferrée 
Atlantique, altitude 80 m., July, 1897, H. Pittier, no. 11,290 (hb. Gr., 
and hb. Inst. Phys.-Geog. Cost. Ri.). In general habit this species 
approaches most closely C. surinamense, L., but is readily distinguished 
from it by the conspicuous hirsute pubescence of the upper leaf-surface, 
