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Four new species, Macrocarpaea dies-viridis (Ecuador), M. luctans (Ecuador, Peru), M. lucubrans (Panama), and M. opulenta (Ecuador), and two natural hybrids, M. ×acuminata (Costa Rica) and M. ×mattii (Ecuador), are described. Macrocarpaea × acuminata Weaver (pro sp.) is recognized as a natural hybrid between M. subcaudata and M. valerii, rather than as a distinct species, and M. × mattii is described here as a natural hybrid between M. noctiluca and M. subsessilis. The average number of seeds per capsule of M. dies-viridis is reported. With 10,400–11,000 seeds per capsule, the is first report in the genus.
The distribution, nomenclature, and taxonomy of Rubus cuneifolius Pursh are briefly reviewed. Since there is no known original material for the name R. cuneifolius, a neotype is chosen using recently collected material from southern New Jersey, an area where Frederick T. Pursh most likely observed the species. The misapplication of the name R. parvifolius L. by Thomas Walter in his Flora Caroliniana is also reviewed.
Continuing studies of neotropical Goodyerinae has revealed that 11 transfers are required in the genera Aspidogyne (9) and Microchilus (2). Furthermore the descriptions of 31 new taxa are required in the genera Aspidogyne (3), Ligeophila (1), Microchilus (21 species, 2 subspecies, 2 varieties) and Platythelys (2). Extensions of distributional records are reported for 8 species. Ethnobotanical uses are recorded for 3 Ecuadorian species. Erythrodes cornejoi, E. serripetala and Ligeophila chinimensis are formally reduced to synonymy of Platythelys venustula, Aspidogyne bidentifera and Ligeophila juruenensis respectively. Illustrations are provided of 35 of the 54 taxa treated.
Acronychia richards-beehlerii is newly described from the Conservation International Kaijende Expedition. The novelty is closest to A. smithii, differing primarily in the conspicuous septicidal channels on ovaries and fruits. Distributional notes from the recent survey are also provided for the infrequently collected A. emarginata and A. foveata.
The genus Pomatocalpa (Orchidaceae) is revised. The genus is found from India through Malesia and the Cape York Peninsula of northeastern Australia to Fiji, north to northeastern Himalaya and Taiwan, with its center of diversity in Thailand and Peninsular Malaysia. Thirteen species are recognized, three of which have two subspecies. Two new combinations are proposed. A key to the species is given, and all taxa are described with notes on distribution and ecology. Distribution maps and illustrations are provided for all taxa. The overall distribution patterns suggest that the genus originated in a wet tropical area in the western part of Malesia or southern mainland Asia more than 15 million years ago, and that the present occurrences in Taiwan, the Lesser Sunda Islands and areas east of Lydekker's line are derived from later migrations. Partly on the basis of results of a nonparametric test for extinction, Pomatocalpa kunstleri subsp. linearipetalum and P. tonkinense are considered extinct in the wild.
The following nomenclatural adjustments are proposed for the apomictic, hybrid species of Boechera to make the names available for the forthcoming account of the Brassicaceae in the Flora of North America. Two new species of Boechera (B. elkoensis and B. peirsonii) are described, and a new name (B. cascadensis) is proposed for the taxon currently known as Arabis microphylla var. thompsonii. In addition, 13 new combinations (B. calderi, B. californica, B. consanguinea, B. depauperata, B. drepanoloba, B. harrisonii, B. horizontalis, B. macounii, B. paddoensis, B. pauciflora, B. pinetorum, B. porphyrea, B. rubicundula) are validated. Notes on the delimitation and/or distribution of B. calderi, B. falcatoria, and B. goodrichii are presented. Boechera calderi is reported for the first time from California, Idaho, Montana, Oregon, Washington, and Wyoming, and B. goodrichii is reported for the first time from Nevada.
Eutrema bouffordii and Draba yueii are described as new from Sichuan Province, China. The relationships and distinguishing characters from their nearest relatives, E. fontana and D. winterbottomii are discussed.