MR DAVID DON 
Use, suborbiculatag, compressas v. oblongge, trigonae, basi iri 
calcare brevissimo emargiDato productse, ad basin lateris 
interni filamentis adnatae, apice obtusse (rarissime subacutae) 
poris geminis hiantes. Stylus robustus, rectus, superne 
angustatus, parum curvatus. Stigma obtusum, simpleXj 
pruinosum. Capsula baccata, sphserica, calyce crasso coria- 
ceo obvoluta, et cum eo connata, 6-locularis, 6-valvis, inter- 
dum 8-locularis, 8-valvis: valvis crassis, coriaceis, rima 
oblorjga singulis in medio loculi hiantibus. Dissepimenta 
coriacea, medio valvarum inserta, axi centrali firme ad- 
natae. Placentas 6, crassae, carnosae, trigonag, scrobiculat^, 
simul cum parietibus capsulae imbricate seminiferas, axi 
centrali longitudinaliter affixae. Semina ovata^ majus- 
cula, fusca, punctata, umbilico oblongo lateraii, convexo, 
nigrescente aucta : testa duplex .; exterior crassa, coriaceo- 
crustacea ; interior membranacea • albumen nullum. Em- 
bryo lute us, rectus, ovoideus, cavitati seminis conformis : 
cotyl. crassae, hemisphaericae, aequales : radicula cylindracea, 
crassa, obtusa, cotjledonil)us longior, recta. 
Arbusculae aut frutices (Amer. ^quin. et Ind. Occid.), 
ramis teretibus v. tetragonis sospius tomentosis. Folia 
opposita, petiolata, S-5-7iervia, coriacea, integerrima v. 
crenulata, supra glabra, nitida, subtus soepiils dense fir ^ 
rugineo-tomentosa, Pedunculi aocillares teretes, uniflori, 
nudi, oppositi v. solitarii, fioliis breviores, scepius fusco^ 
tomentosi. Flores magni, speciosi rosei. 
Obs. Ad hoc genus referendae praeter species omnes 
infra descriptas forte Melastoma Cacatin AubL 
§ Calycibus limbo 6-lobis, squamis 4 rard 6 basi cinctis. 
1. B. trinervis, foliis ovali-oblongis trinerviis; adultis 
utrinque glabris nitidis, petiolis ramulisque rufo- 
