O presente trabalho trata da floração e frutificação da palmeira monocárpica Corypha umbraculifera L., introduzida no Jardim Botânio do Rio de Janeiro.

Summary The loranthaceous genus Furarium was formerly described (Rizzini, 1956) as devoid of bracteoles in the cavities of the rachis in viihich the flowers are inserted. Recent reexamination of an extremely favorable specimen has shown that such bracteoles do exist and are even well developed. Moreover, it was disclosed that the flowers are both unisexual and arranged In ternations. In view of these new features the generic and specific diagnoses have to be amended in certain details. As a result, Furarium has got intermediate between Phthirusa (by the ternations inside bracteolar cups and dieline flowers) and Oryctanthus (by the excavated inflorescence axes). It differs from both of them by its conspicuous, closely imbricate bracts toward the spike apex (hence strobiliform spikes) allied to the amply divergent anther thecae.

SUMMARY This paper bears a number of freshly gathered data on some Brazilian legumes, a few of them poorly known to botanists. Four varieties of the very polymorphic Mimosa pteridifolia Benth. were described as new to science. It is important to note that specimens of the recently described Itaobimia magalhaesii Rizz. were found in full blossoming; the flowers when seen alive are white at opening but immediately after anthesis turn to dark brown. The genus Itaobimia differs from Riedeliella Harms mainly by having stamens monadelphous up to the middle of the filaments, thus forming a tube inside which the ovary remains concealed. Cassia planaltoana Harms was redescribed.

Continuando a apresentação do nosso dicionário para uso dos botânicos, seguem-se as letras compreendidas entre I e M. As notas explicativas, como autores utilizados e abreviaturas, acham-se na “Advertência” da primeira publicação da série, nos Arquivos do Jardim Botânico (cf. Bibliografia).

SUMMARY Botanical Latin-Portuguese Classical Lexicon - This is the fourth contribution of this work, embracing the letter between I and M. The explanation given in the first one (see Bibliography) serves to the present also.

SUMMARY Some of the main types of vegetation from Minas Gerais were refered to with special emphasis on campo formation which covers the region embraced between Diamantina and Grão Mogol, and upon the drier, caatinga like vegetation around Araçuaí-Itinga-Itaobim. At the sandy campos among the few cacti species present, Discocactus tricornis (Dietr.) Monv. dominated amply. A number of Melocactus specimens were collected for future study in cultivation. M. diersianus not only thrived in an unusual habitat, limestone, endowed with rather copius water (Fig. 1 shows it amidst a vigorous growth of Selaginella sp.), but also differed from other through its distinct prickles (very thick and bent) combined with some body features (Fig. 1 and 8); the cephalium is big and deeply red, producing slightly colored berries (at times almost white). The bignoniaceous Cuspidaria cordata Mattos also was described as a new taxon, differing from C. argentea (Wawra) Sandw. in the cordate leaves and the pods both longer and narrower.

SUMMARY A very small population of the dwarf palm Astrocaryum kewense B. Rodr. was found beside the road that passes near the town João Pinheiro, in Minas Gerais. The plant was collected only twice formerly, but at least Burret's specimen is lost. As it is extremely rare and threatened of extinction, a new description was made with full details, and a complete dried specimen was secured. As Species new to science were described Cyclolobium nutans, with small pods and acuminate, hairy leaves, along with Pouteria undulatifolia which possesses leaves wavy at margins, bullate in upper surface, and caudate-falcate at apex. Cordia glabrata was redescribed based on a specimen from cerrado. Peschiera affinis var. campestris, restudied, proved ta deserve specific status under the name of P. campestris; this is a mere urdershrub endowed with a greatly expanded subterranean system composed of thicks, richly branched, gemmiferous roots through which the plant reproduces itself vegetatively with copious wealth.