MELASTOMACEA. 417 
4, Heeria subtriplinervis, Triana in Trans. Linn. Soc. xxviii. p. 34. 
Heterocentron mexicanum, Hook. et Arn. Bot. Beech. 290, non Bot. Mag. t. 5166, nec Naud. 
Norta Mexico, Sierra Madre (Seemann, 2176); Sourn Mexico, San Blas to Tepic 
(Sinclair), Tepic (Barclay), Jalapa (Coulter). Tb. Kew. 
5. Heeria, sp. ? 
GuATEMALA, Volcan de Fuego, 6000 feet (Salvin & Godman). Hb. Kew. 
6. Heeria, sp. 
GuaTEMALA (Skinner). Hb. Kew. 
7. Heeria, sp. ? 
SoutH Mexico, valley of Cordova (Bourgeau, 1469). Hb. Kew. 
5, ARTHROSTEMMA. 
Arthrostemma, Ruiz et Pav. Fl. Peruv. iv. t. 326; Benth. et Hook. Gen. Plant. i. p. 740; Triana 
in Trans. Linn. Soc. xxvii. p. 35. 
Five species, distributed from Mexico to Peru. Herbs or dwarf shrubs. 
1. Arthrostemma campanulare, Triana in Trans. Linn. Soc. xxviii. p. 35. 
Heteronoma diversifolium, Naud. 
- GuaTeMALA, in humid thickets, Chojoja, near Mazatenango (Bernoulli) ; NICARAGUA 
(Tate, 23); Costa Rica, a weed in gardens (Polakowskg); Panama, Chagres (Fendler, 
112)—Cotompia; VENEZUELA; Ecuapor. Hb. Kew. 
9. Arthrostemma fragile, Lindl. in Journ. Hort. Soc. iii. p.74, with a figure, p.75. 
_“Heteronoma galeottianum, Naud. 
Sourn Mexico, Orizaba (Botteri, 746, 958), valley of Cordova (Bourgeau, 1508). Hb. Kew. 
3. Arthrostemma, sp. 
GuatemaLa (Friedrichstal). Hb. Kew. 
[Nepsera aquatica, Naud. in Ann. Sc. Nat. sér. 3, xii. t. 14, fig. 1, et xiii. p. 28, is 
an aquatic herb, widely diffused in South America and the West Indies, and likely to 
be found in Central America. | 
6. PTEROLEPIS. 
Pterolepis, Mig. Comm. Phyt. ii. p.72; Benth. et Hook. Gen. Plant. i, p. 742 ; Triana in Trans. 
Linn. Soc. xxvii. p. 38. 
Herbs or shrubs. Twenty-five species, ranging from Mexico and the West Indies to 
‘Peru and Uruguay. 
1. Pterolepis exigua, Triana in Trans. Linn. Soc. xxviii. p. 39. 
Arthrostemma exigua, Naud. 
SovTH Mxxico, rocks and fields at 3500 feet, Cordillera of Oaxaca (Galeotti, 2933). 
Hb. Kew. 
BIOL. CENT.-AMER., Bot. Vol. 1, June 1880. 3h 
