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Echeveria michihuacana (Crassulaceae), a new species for science, is described and illustrated. The new taxon is related to a group of species of Echeveria series Gibbiflorae from western Mexico, including Echeveria dactylifera, Echeveria fulgens, Echeveria patriotica, and particularly the recently published Echeveria pistioides. With the last species, E. michihuacana is similar in the shape and coloration...
Miconia canoi, a new species of Melastomataceae from northern Peru and southern Ecuador is described. Miconia canoi is similar to other scrambling or small shrubs of Miconia found in the páramos and jalcas, but can be easily identified by the combination of glabrous, ovate leaf blades without obvious secondary venation in the adaxial surface, four-merous flowers with persistent bracteoles, glandular...
Burmeistera villosa (Campanulaceae-Lobelioideae), a new vestured species from the Chocó/Valle del Cauca border region, is described and illustrated, and its affinities are discussed. The species is a small, unbranched herb that stands out from other species by its densely villous indument that covers all its organs, and the narrow, nearly straight corolla lobes that point forward. The new species...
There has been considerable discussion on the history of the collections gathered by the Botanical Expedition to the Viceroyalty of Peru, members of which remained thirty-four years (1777–1811) collecting in the New World. Two species names in Rauvolfia (Apocynaceae), Rauvolfia flexuosa, the basionym of Citharexylum flexuosum since Don’s combination in 1831, and Rauvolfia macrophylla, now treated...
A new species, Hyptidendron roseum, from the Chapada dos Veadeiros region, Goiás state, is described and illustrated. It can be distinguished from its congeners by the combination of inflorescences composed of a unilateral cymose structures, sessile to subsessile leaves, a ring of trichomes in the throat of the calyx tube, and a dense indumentum of white uniseriate trichomes covering much of the plant...
Two new species of Bromelioideae (Bromeliaceae) from the Colombian Amazon are described: Aechmea cardenasii and A. andaquiensis. Aechmea cardenasii is significantly different from other species of Bromelioideae, although it roughly resembles A. rubiginosa because of its simple, strobilate inflorescence. Aechmea andaquiensis belongs to a taxonomic complex that includes A. abbreviata, A. angustifolia...
Tachigali amarumayu, a new species of caesalpinioid legume restricted to terra firme forests in southwestern Amazonia, is described, illustrated, and compared with the morphologically similar species T. prancei, T. rugosa, and T. setifera.
The Miconieae (Melastomaceae) are a strictly Neotropical group comprising over 1900 species. The tribe is characterized by inflorescences that are terminal or axillary, but not cauliflorous (except a few species of Charianthus, Clidemia, and Mecranium), flowers subtended by only one pair of bracteoles (or none at all), with anthers that lack a pedoconnective, leaves without long acicular raphides,...
A taxonomic treatment, based on herbarium study and field observations, is presented for the Brazilian species of Myriocladus (Poaceae, tribe Bambuseae, subtribe Arthrostylidiinae), a genus of woody bamboos restricted to geographically isolated uplands of the Pantepui region of Brazil, Venezuela, and Guyana. Of the 12 accepted species of Myriocladus, five are recorded from Brazil, of which four also...
A new species of Magnolia (Magnoliaceae), from Antioquia Province, Colombia is described. Magnolia frontinoensis, only known from a restricted area of the Western Cordillera, from 1700–1940 m, is recognized by the lamina bases decurrent and revolute, and the fruits small (11.7–29 × 8.4–21.5 mm). Besides the new species, two new records for Colombia are presented: Magnolia gloriensis, initially known...
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