Pleurothallis teres Lindl. 1836 SUBGENUS Acianthera [Scheidw.] Luer 1986

Photo by Tropiscape Orchids Website

Plant and Flowers

Photo by Rogier van Vugt

TYPE Drawing

Drawing by Helmut Seehawer

Common Name The Terete Pleurothallis [refers to the leaf]

Text By Dalton Holland Baptista: Pleurothallis teres is a Brazilian species that grows mostly as a lithophyte between rocks where its roots can reach some humidity, and sometimes as an epiphyte, always under full sun, in warm areas of the states of Rio de Janeiro and Minas Gerais. It blooms during the spring, flowers are long lasting (more than a month), with about 8 each inflorescence. The flowers are .16" [4 mm] wide and .32" [8 mm] long and remain almost closed. The erect inflorescence is about 2.4" [6 cm] long and its top is at the same height the leaves. The leaves are terete 3.2" [8 cm] high and .6" [1.5 mm] of diameter and may be dark green or get a little bit purple when under full sun.

This plant likes dry areas of the greenhouse with lots of sun and heat. Very good drainage. Water after one or two days when the substrate is dry. Besides that its not hard to grow.

Very similar to P johanensis but differs in the longer inflorescence, longer sepals and flower color.

Synonyms Acianthera teres (Lindl.) Luer 2004; Acianthera rupestris (Lindl.) F.Barros 2002; Humboldtia pachyphylla (Rchb.f.) Kuntze 1891; Humboldtia rupestris (Lindl.) Kuntze 1891; Humboldtia teres (Lindl.) Kuntze 1891; Pleurothallis pachyphylla Rchb.f. 1850; Pleurothallis rupestris Lindl. 1835

References W3 Tropicos, Kew Monocot list , IPNI ;

* Edwards's Bot. Reg. 21: t. 1797 Lindley 1835;

Flora Brasilensis 3(4): 512 (C.F.P.von Martius & auct. suc. (eds.) Cogniaux 1896

Orchidaceae Brasilensis Band 1 Pabst & Dungs 1975 as P rupestris drawing hmm;

Orchidaceae Brasilensis Band 1 Pabst & Dungs 1975 drawing hmm;

Orchids Travel By Air A Pictoral Safari Mulder, Mulder-Roelfsema and Schuiteman 1990 photo fide;

Orchids of Brazil McQueen 1993 photo good;

Icones Pleurothallidinarum Vol XXVI Pleurothallis subgenus Acianthera and Three Allied subgenera, A Second Century of new Species of Stelis of Ecuador, Epibator, Ophidion and Zootrophion Luer 2004 as Acianthera teres;

The Organ Mountain Range Its History and Its Orchids Miller, Warren, Miller and Seehawer 2008 drawing fide;

A Compendium of Miniature Orchid Species Parsons & Gerritsen 2013 as Acianthera teres photos fide;

Pleurothallids Neotropical Jewels Vol 1 Karremans & Viera 2020 as Acianthera teres photo fide