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Dressler, R.L. 2001. Mesoamerican orchid novelties 5, Oncidiinae. Selbyana 22(1): 9-13.
Abstract. The following new species have appeared during the preparation of the Flora Mesoamericana and are described and illustrated here: Cischweinfia nana, a very small-flowered species with rhombic lip; Oncidium allenii is closely allied to O. klotzschianum Rchb.f., but has the base of the lip orbicular, rather than broadly triangular; Oncidium punctulatum is distinguished by the finely spotted sepals and petals and the relatively small inflorescence; Trichopilia olmosii has very wide leaves, several-flowered inflorescences and a short, wide lip, with the basal half of the column adnate to the lip; while Trichopilia similis has several-flowered infl orescences and a rhombic lip with 2 branched keels and 2 shallow pits on the lip.
Key words: Oncidiinae, Mesoamerica, Orchidaceae.
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