Maxillaria pachyacron Schltr. 1911 sect. Arachnites Christenson 2013

Photo by Daniel Jimenez and His Flickr Orchid Photo Page

Another Angle Close

Plant and Flower

Photo by Walter Schug

Part ShadeCoolSummer THROUGH EARLYSpring

Common Name The Narrowest Maxillaria [refers to the leaves]

Flower Size 2" [5 cm]

Found in Nicaragua, Costa Rica and Panama in cloud forests at elevations of 1000 to 1900 meters as a miniature sized, cool growing epiphyte with narrowly to broadly ovoid pseudobulbs enveloped basally by 1 to 2 leaf-bearing sheaths and carrying a single, apical, elliptic-ovate to linear, acute, often recurved apex, gradually narrowing below into the elongate, petiolate base leaf that blooms in the summer through early spring on a basal, 10" [25 cm] long, wiry inflorescence enveloped by 4 to 5 acute, to obtuse, involute bracts.

Often stated as a synonym of M reichenheimiana but differs in the shorter mentum around the shorter column foot besides the thinner, non white spotted leaves.

Similar to M chionantha but M pachyacron usually has a shorter inflorescence, smaller flowers with less attenuate segments and a much less distinct 3 lobed lip. It is also similar to M virguncula but it is a much smaller plant and has smaller red to maroon flowers with a simple lip, attenuate floral segments and distinctly petiolate base leaves.


References W3 Tropicos, Kew Monocot list , IPNI ; Repert. Sp. Nov. Regni. Veg. Beih. 19: 140. Costa Rica Schlechter 1923; Repert. Sp. Nov. Regni. Veg. Beih. 19: 234. Costa Rica Schlechter 1923; Icones Planetarum Tropicarum Plate 1232 Hamer 1985 drawing ok; Icones Planetarum Tropicarum Plate 1357 Atwood 1989 drawing ok; Fieldiana Biology, Flora Costa Ricensis Family # 39 Orchidaceae, subtribes Maxillariinae and Oncidiinae Atwood & Mora 1999 drawing fide; Manual de Plantas de Costa Rica Vol 3 Hammel, Grayum, Herrera and Zamora 2003; Orchids of Costa Rica Vol 4 Morales 2009 photo fide; AOS Bulletin Vol 80 #6 2011 photo fide; Vanishing Beauty, Native Costa Rican Orchids Vol 2 Lacaena to Pteroglossa Pupulin 2020 photo fide