Dariusz L. SZLACHETKO, Marta KOLANOWSKA, Max RYKACZEWSKI

Notes on the genus Frondaria (Orchidaceae) with description of new species

The specific diversity of Neotropical orchid genus Frondaria is evaluated based on morphological data. Frondaria was considered a monospecific taxon for years; however, our recent studies on Andean orchids indicated that it is actually much more variable. Within Colombian material, we found a species which does not fit the morphological description of F. caulescens and described it here as a new species named F. colombiana. The novelty is characterized by inflorescence being three times as long as the ramicaul, the tridentate leaf apex with middle tooth as long as lateral ones, papillate apices of sepals, and oblong–ligulate lip middle lobe which is papillate along margins and in the apical part. The taxonomic status of P. graminea was evaluated, and based on the gathered data; this species should be considered separate from F. caulescens as well. The comparative morphology of all three Frondaria species is provided. Additionally, Octomeria tenuis is lectotypified.

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Ames O (1930). A new species of Pleurothallis from Mexico. P Biol Soc Wash 43: 195-196.
Ames O (1934). A new Pleurothallis from Honduras. Botanical Museum leaflets, Harvard University 2: 25-27.
Barbosa Rodrigues J (1877). Genera et Species Orchidearum Novarum, I. Sebastianopolis, Brazil: Typographia Nacional.
Barbosa Rodrigues J (1882). Genera et species Orchidearum Novarum II. Sebastianopolis, Brazil: Typographia Nacional.
Cogniaux AC (1896). Orchidaceae, Tribus VI: Pleurothallidinae. In: von Martius CFP, Eichler AW, Urban I, editors. Flora Brasiliensis. Monarchii: F.Fleischer, pp. 319-652.
Hoehne FC (1929). Contribuicoes para o conhecimento da flora Orchidologica Brasilica. Arq Inst Biol (Sao Paulo) 2: 5-52 (in Portuguese).
Karremans A (2016). Genera Pleurothallidinarum: an updated phylogenetic overview of Pleurothallidinae. Lankesteriana 16: 219-241.
Karremans A, Davin N (2017) Genera Pleurothallidinarum: the era of Carlyle Luer. Lankesteriana 17: 1–8.
Kuntze O (1891). Orchidaceae. Revis Gen Pl 2: 645-682. Lindley J (1834). Notes upon a small collection of Peruvian Orchideae. J Bot (Hooker) 1: 8-14.
Lindley J (1859). Folia Orchidacea. An enumeration of the known species of orchids. Pleurothallis. London, UK: J. Matthews.
Luer CA (1986). Icones Pleurothallidinarum I. Systematics of the Pleurothallidinae (Orchidaceae). Monog Syst Botan 15: 1-81.
Schweinfurth C (1959). Orchids of Peru. Fieldiana Botany 30: 261- 531.
Szlachetko DL, Margońska HB (2002). Gynostemia Orchidalium. Vol. 2. Orchidaceae (Epidendroideae). Acta Botanica Fennica 173: 1-275.