Brachionidium cornu-nigricum Bogarín & Karremans 2016

TYPE Drawing by © Bogarin & Karremans

Full ShadeCool Spring

Common Name or Meaning The Black Horn Volcano Brachionidium [refers to Vulcan Cacho Negro in Costa Rica ]

Flower Size 1" [2.5 cm]

Found in Costa Rica on the Vulcan Cacho Negro in lower montane rainforest at elevations around 1150 meters as a miniature sized, cool growing, repent epipihyte with a branching rhizome giving rise to creeping ramicauls enveloped by 3 to 7 mucronate, non-scurfy green in youth becoming brownish with age sheaths and carrying a single, apical, subcoriaceous, suberect to prostrate, ovate to elliptic, slightly conduplicate, subacute to obtuse, emarginate with a short apiculae, narrowing basally intothe conduplicate, petiolate base leaf that blooms in the spring on an erect, peduncle terete, slender, glabrous, provided with a singular, tubular, brownish bract, rachis .6" [1.5 cm] long, single flowered inflorescence with an ovate, acuminate, infundiform, condupliacte, partially concealing the ovary floral bract and carrying a resupinate, spreading flower with white sepals

Similar to Brachionidium filamentosum but differs in the white flower, the shortly pointed petals, the triangular, non lobed lip with an elongate, basal, glabrous, bilobed callus and the eight pollina. Brachionidium cornu-nigricum can be distinguished from the other four species with prostrate, creeping habit by the triangular lip with the lateral angles rounded (rather than transversely trapeziform, with uncinate-lateral angles in B. minusculum, narrowly acute in B. pusillum, and subacute in B. polypodium) and the entire lip (rather than fimbriate in B. valerioi)


References W3 Tropicos, Kew Monocot list , IPNI ; * Syst. Bot. 41: 921 Bogarin & Karremans 2016 drawing fide