418 MELASTOMACEA. 
2. Pterolepis ladanoides, Triana in Trans. Linn: Soc. xxviii. p. 39. 
Arthrostemma ladanoides, DC. 
Rhexia ladanoides, Rich. in Bonpl. Rhexia, t. 27. 
South Mexico (Galeotti); Costa Rica (Endres, 40); Panama (Halsted).—Widely 
dispersed in the West Inpres and southward to Brazit and Peru. Hb. Kew. 
3. Pterolepis cerstedii, Triana in Trans. Linn. Soc. xxviii. p. 39. 
CentraL America (Crsted). 
4, Pterolepis, sp. 
GuatemALa, near Coban (Tiirckheim, 9). Hb. Kew. 
7. PTEROGASTRA. 
Pterogastra, Naud. in Ann. Sc. Nat. sér. 3, xiii. p.32; Benth. et Hook. Gen. Plant. i. p. 742; 
_ ‘Triana in Trans. Linn. Soc. xxviii. p. 40. 
Four herbaceous annual species, distributed from South Mexico to Guiana and the 
Orinoco. 
1. Pterogastra cupheoides, Scem. Bot. Voy. ‘Herald,’ p. 122. 
Heeria cupheoides, Benth. Bot. Voy. Sulph. t. 33. 
Souta Mexico, between Galera and Pochutla (Liebmann) ; Costa Rica, roadsides near 
San José (Polakowsky); Panama, Chagres (Fendler, 113), Empire railway-station (S. 
Hayes, 574), about the city of Panama (Seemann, 69). Hb. Kew. 
8. PLEROMA. 
~ Pleroma, Don in Mem. Wern. Soc. iv. p. 293; Benth. et Hook. Gen. Plant. i. p. 473 ; Triana in 
Trans. Linn. Soc. xxviii. p. 40. 
Shrubby, arboreous, or very rarely herbaceous; 104 species, finding their greatest 
concentration in Brazil. 
1. Pleroma bipenicillatum, Triana in Trans, Linn. Soc. xxviii. p. 45. 
Lasiandra bipenicillatum, Naud. 
Panama, Santiago (Seemann).—CoLomBIA and Vunnzunra. Hb. Kew. 
9. Pleroma galeottianum, Triana in Trans. Linn. Soc. xxviii. p. 46. 
Oreocosmus galeottianus, pro parte, quoad spec. Berland. 
SournH Mexico, Cuesta de San Pedro Alto (Ziebmann). Ub. Paris. 
3. Pleroma longifolium, Triana in Trans. Linn. Soc. xxviii. p. 45. 
Chetogastra lanceolata, DC. Bot. Mag. t. 2836. 
Souta Mexico, woods on the Pacific side of the Cordillera of Oaxaca, at 6000 to 
8000 feet (Galeotti, 2923), barren plains, Vera Cruz (Galeotti, 2947), Teapa (Linden, 
643), Orizaba (Bottert, 1013), Yucatan and Tabasco (Johnson) ; Nicaragua, Chontales 
(Tate, 212); Costa Rica, primeval forests of Angostura (Polakowsky); Panama, Chagres 
(Fendler, 129 ; Seemann).—This species has a very wide area of distribution in the 
West Inpiss and southward to Brazit and Perv. Hb. Kew. 
