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Ornithocephalus aristatus, a new species from Panama, is described and illustrated. Among the species of the genusOrnithocephalus, it can be distinguished by the nonresupinate flowers, the sepals each provided with a flexuous awn half as long as the sepal itself, the porrect petals with revolute margins, the hastate lip with triangular-ovate, crose lateral lobes, the linear, acute midlobe, conduplicate...
Sequences of the nuclear ribosomal internal transcribed spacer regions 1 & 2 (nrDNA ITS) including the intervening 5.8S region were analyzed cladistically for 43 individuals of 35 species ofScaphyglottis s.l. plus two outgroup taxa. Low levels of sequence divergence do not allow estimation of relationships among most clades, but the analyses indicate that four segregate genera (Hexisea Lindl.,...
New species ofBletia from Mexico are described and illustrated:B. concolor, B. similis, andB. urbana. The identity ofB. campanulata Llave & Lex. is discussed, andB. reflexa Lindl. is considered to be a distinct species. Several South American epithets are treated as synonyms ofB. campanulata. A key to the recognized species ofBletia is given.
The generaAmblostoma, Lanium, andStenoglossum are discussed, and it is concluded that all three should be included inEpidendrum.Lanium is treated as a section, and new names are proposed for two species whose epithets are preoccupied inEpidendrum: E.macrum (forAmblostoma gracile) andE.stiliferum (forLanium subulatum).
Summary The status of the genusEncyclia is reviewed, and this genus is compared withEpidendrum. As currently used,Epidendrum is a very heterogeneous assortment of species, resulting largely from the over-emphasis on certain “key characters.” If a greater emphasis is given to the internal coherence of the species groups within theEpidendrum alliance, about thirty genera can be recognized, with Envyclia...
Summary Of the features reported to separate the subtribe Cryptoeentrinae from the Maxillariinae, only the presence of a spur is found to be consistent. The spur is believed to be homologous with the mentum ofMaxillaria, and this single difference is not considered an adequate basis for a subtribal distinction.Anthosiphon andSepalosaccus have been suggested as close relatives of Cryptocentrum, but...
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