Pleurothallis lateralis L.O.Williams 1956 SUBGENUS Acianthera [Scheidw.] Luer 1986

Plant and Flowers ?in situ Costa Rica

Photo by Daniel Jimenez

TYPE Drawing

TYPE Drawing by L O Williams and The Epidendra Website

Full shade Cool LATERSummer EARLYFall

Common Name Rudolf Vasquez's Pleurothallis [Peruvian Botanist current]

Flower Size .24" [6 mm]

Found in Alajuela province of Costa Rica in humid forests at elevations around 1200 meters as a small to just medium sized, cool growing epiphyte with terete, erect ramicauls enveloped by sheaths and carrying a single, apical, papyraceous, narrowly elliptic-lanceolate, acuminate, cuneate below in to the canaliculate, petiolate base leaf that blooms in the late summer and early fall on a pendent, deflexed, peduncle rigid, flexuous, provided with a bracts, 1.2" [3 cm] long, rachis 1.2 to 1.6" [3 to 4 cm] long, several flowered inflorescence.

Often confused with P johnsonii and P herrarae but this species has larger plants that only produce basal inflorescence, yellow sepals with long conspicuous hairs and lanceolate petals. P herrerae has longer acuminate sepals without the conspicuous hairs and has a pair of large uncinate lobes on the lip.

Synonyms Acianthera costaricensis (Schltr.) Pupulin & Karremans 2016; Brenesia costaricensis Schltr. 1923;

References W3 Tropicos, Kew Monocot list , IPNI ;

Repert. Sp. Nov. Regni. Veg. Beih. 19: 200. Costa Rica Schlechter 1923 as Brenesia costaricensis;

*Ceiba 5: 84 L O Williams 1956;

Die Orchideen 3 Auflage Bd 1 Sonderabdruck aus Schlechter Lieferung 7 385 - 448 Brieger, Maatsch and Senghas 1975 as Brenesia costaricensis;

Harvard Pap. Bot. 21: 184 Pupulin & Karremans 2016 as Acianthera costaricensis; ;

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