(74) 
54 
Lecythis pachysepala , Spruce in Mart. FL Bras. 1 . c. 494. Junc¬ 
tion of the Rivers Beni and Madre de Dios (2528). 
Gustavia angusta, L. Amoen. Acad. viii. 266. Falls of the Ma¬ 
deira (656). 
Gustavia Brasiliana , DC. Prodr. 1 . c. 290. Junction of the Beni 
and Madre de Dios (657). 
As the species of the order Myrtacese have been so exceedingly 
multiplied by Berg, and many of his descriptions are not rep¬ 
resented in the Kew Herbarium, I was unable to distinguish 
any new species among the numerous specimens collected by 
Dr. Rusby. 
MELASTOMACE^E. 
Acisanthera alsincefolia (DC.), Tri. Trans. Linn. Soc. xxviii. Falls 
of the Madeira, Brazil (2534). 
Pterolepis trichotoma (Rottb.), Cogn. in Mart. FL Bras. xiv. (3) 
261. Guanai, 2,000 ft. (2325). 
Tibouchina granulosa (Desr.) 7 T?ogn. Mapiri, 5,000 ft. (2247). 
var. ANGUSTIFOLIA, var. nov. Folia anguste oblonga, iTcnL 
longa 2 cm. lata, acuta; petiolis 1 cm. longis. Yungas, 6,000 
ft. (2245). 
Tibouchina barbigera (Naud.), Baill. Adans. xii. 75. Guanai, 
2,000 ft. (2326). 
Tibouchina longifolia (Vahl), Baill. 1 . c. 74. Yungas, 6,000 ft. 
^2336; 2243); Guanai, 2,000 ft. ( 2244 ); Yungas, 4,000 ft. 
(2549), the latter determination from imperfect specimens 
and uncertain. 
Tibouchina PANICULARIS (Naud). ( Chcetogastra panicidaris , 
Naud. Ann. Sci. Nat. (III.) xiv. 129; Pleroma paniculare , 
Triana, Trans. Linn. Soc. xxviii. 46.) Yungas, 4,000 ft. (2327). 
Tibouchina capitata (Naud.) Cogn. mss. [Micranthella capi- 
tata, Naud. l.c. xiii. 350; Pleroma capitatum , Triana, 1 . c.) 
Mapiri, 2,500 ft. (2727). Det. Cogniaux. 
TIBOUCHINA LATIFOLIA (Naud.) ( Micranthella latifolia , Naud. 
1 . c. 351 ; Pleroma latifolium , Triana, 1 . c. 47). Yungas, 4,000 
ft. (2337); 6,000 ft. (2338). 
Tibouchina Rusbyi, Cogn. sp. nov. (sect. Dictanthera): ramis 
junioribus petiolis pedunculis calycibusque brevissime et 
densiuscule hirtellis; foliis breviter petiolatis, oblongis, basi 
