(after A. Bertolini, Italian botanist). Melastomataceae. Splendid warmhouse foliage plants from Brazil, always dwarf, and sometimes creeping; the garden forms with membranaceous, 5-7-nerved leaves 5-8 in. long, and purple beneath: flowers. rose-colored, 5 petaled, in scorpioid racemes or spikes. Within the restricted definition of the latest monographer of the Melastomataceae (A. Coigneaux, in DC. Mon. Phan. vol. 7), there are only five good species, but some earlier botanists do not separate certain allied genera which usually cannot be distinguished by habit alone. The surest character is the inflated and 3-angled or 3-winged calyx of Bertolonia.