STANDLEY—TROPICAL AMERICAN PHANEROGAMS, 127 
ently, belong specimens collected by Pittier (no. 1114) in the Péramo de Buena 
Vista, Huila Group, Central Cordillera, State of Cauca, Colombia, at an altitude of 3,000 
to 3,600 meters. The Colombian plant has rather narrower leaves than the Venezuelan 
one but does not seem to differ otherwise. 
Arcytophyllum caucanum Standley, sp. nov. 
Low, much branched shrub, 20 to 30 cm. high; branches stout, quadrangular, 
glabrous, or scabro-ciliate along the angles, erect or strongly ascending; leaves numer- 
ous, crowded; stipules broadly ovate, divided into several bristle-like laciniz at the 
apex; leaf blades 6 mm. long and 3 mm. wide, oval, obtuse or acutish, mucronulate, 
nearly flat, margined, thick and coriaceous, glabrous, abruptly contracted at the 
base into a very short petiole; flowers short-pediceled, in subsessile few-flowered 
terminal clusters; pedicels glabrous; calyx 4 to 5mm. long, the lobes triangular-oblong, 
acute or acuminate, much longer than the tube, with intermediate setose appendages 
nearly as long as the lobes; corolla tube 5 to 7 mm, long, much exceeding the lobes, 
these triangular-ovate, acute, pilose within with fine short hairs; capsule about 2 
mm. high. 
Type in the U. 8. National Herbarium, no. 531334, collected in the Péramo de 
Buena Vista, Huila Group, Central Cordillera, State of Cauca, Colombia, at an altitude 
of 3,000 to 3,600 meters, January, 1906, by H. Pittier (no. 1137). Also collected in 
the P4éramo de Moras, between Mozoco and Pitayd, in the same State, at a similar 
altitude, February, 1906, by Mr. Pittier (no. 1412), 
Related to A. capitatum but differing in the smaller, less acute leaves, the larger 
flowers which surpass the leaves, and the proportionally longer corolla tube. 
Arcytophyllum cephalanthum (Wedd.) Standley. 
Hedyotis cephalantha Wedd. Chior. And. 2: 46. 1857. 
This was based by Weddell upon three collections from the provinces of Pamplona 
and Ocafia, Colombia. Weddell states that it is perhaps the largest of the species, 
the leaves being often 2 cm. long. 
Arcytophyllum latifolium Standley, sp. nov. 
Low shrub; stems erect, branched, stout, glabrous, yellowish, obtusely quad- 
rangular; leaves numerous but scarcely crowded; leaf blades 10 to 14 mm. long, 5 to 
8 mm. wide, broadly ovate or ovate-oblong, broadly obtuse, mucronulate, glabrous, 
thick and coriaceous, the margins usually strongly revolute, abruptly contracted 
at the base into a very short petiole; stipules broadly ovate, rounded at the apex 
and dissected into setose lacinie, scarious, stramineous, conspicuous; flowers nearly 
sessile in dense few-flowered terminal clusters; calyx 3 mm. long, the lobes lanceolate 
or lance-oblong, acute, twice as long as the tube or more, with intermediate setose 
appendages much shorter than the lobes; flowers surpassing the leaves; corolla tube 
3 to 4 mm. long, only slightly longer than the ovate acutish lobes, these abundantly 
pubescent within with short, white, very coarse hairs; capsules not seen. 
Type in the U. 8. National Herbarium, no. 531356, collected in the Péramo de 
Buena Vista, Huila Group, Central Cordillera, State of Cauca, Colombia, at an altitude 
of 3,000 to 3,600 meters, January, 1906, by H. Pittier (no. 1159). 
Nearest A. capitatum and A. caucanum; differing from the former in its smaller 
obtuse leaves and larger flowers, and from the latter in the broader, more obtuse 
leaves with revolute margins and in the shorter corolla tube. The pubescence of 
the corolla is very different in A. caucanum and A. latifolium. 
Arcytophyllum lavarum Schum. sp. nov. 
Mallostoma lavarum Donn. Smith, Enum. Pl. Guat. 5: 36. 1899, hyponym. 
Arcytophyllum lavarum Schum. loe. cit. as synonym. 
Low, much branched shrub, 12 to 25 cm. high; branches stout, erect, glabrous, 
quadrangular; leaves numerous, dense; stipules about 1 mm. long, triangular-ovate, 
acuminate, papillose on the outer surface or smooth, with usually 2 lacinise on each 
