Psilochilus macrophyllus (Lindl.) Ames 1922

Inflorescence and plant Photos by Franco Pupulin.

Inflorescence and plant Photo by .

Lip Detail Drawing

Lip Detail Drawing of var brenesii

Lip Detail Drawing of var crenatifolius Drawings by Oledrzynska, Nowak, Kolanowska, Naczk & Jaskula Herbarium-based studies on taxonomy, biogeography and ecology of Psilochilus (Orchidaceae)

Full ShadeHot Cool SpringSummer

Common Name The Large Leafed Psilochilus

Flower Size 1" [2.5 cm]

Found in the Leeward Islands, Puerto Rico, Haiti, Dominican Republic, Cuba, Jamaica, the Windward Islands, Panama, Colombia and Brazil in dense cloud forests at elevations of 500 to 2200 meters as a small to medium sized, hot to cool growing terrestrial with a creeping rhizome giving rise to 2 to 6, ovate-cordate to ovate-oblong, acute to acuminate, variegated, petiolate base leaves that blooms on a terminal, racemose, 1 to 3" [2.5 to 7.5 cm] long, successively 1 to 8 flowered inflorescence occurring in the winter, spring and summer.

"This species is characterized by the sessile or subsessile leaves, shortly clawed lip and prominent lip lateral lobes. The other species with sessile or subsessile leaves may be easily distinguished from P. macrophyllus based in lip shape. Morphological studies on the variation of the flower morphology within P. macrophyllus revealed that at least two forms of the lip shape are produced among populations. The differences between sessile-leaved Psilochilus was also noticed by Dressler (2003) who, however, did not decide to formally separate the two recognized groups. Based on conducted studies and considering the variation within populations two conclusions may be drawn. Previously described P. crenatifolius seems to fall into lip shape variation of P. macrophyllus hereby it is reasonable to reduce it to the rank of variety of P. macrophyllus. A total of three varieties within P. macrophyllus can be distinguished base on the leaf margin form and shape of the lip middle lobe. Since P. macrophyllus var. crenatifolius is known from a single locality it was not included in niche overlap test. This statistic calculated for other two taxa indicate that the climatic conditions preferred by these orchids are almost identical conforming to the close relation between them." Herbarium-based studies on taxonomy, biogeography and ecology of Psilochilus (Orchidaceae) Kolanowska, Naczk & Jaskula 2016

Synonyms *Pogonia macrophylla Lindl. 1858; Psilochilus macrophyllus var. brenesii Kolan., PeerJ: 4 [e2600] 2016; Psilochilus macrophyllus var. crenatifolus (Kolan.) Kolan., 2016

References W3 Tropicos, Kew Monocot list , IPNI ; Symbolae Antillanae Vol VI Orchidaceae Urban 1909 as Pogonnia macrophylla; Flora of Jamaica Fawcett & Rendle 1910 drawing hmm; Flore Descriptive des Antilles Francaises H. Stehle 1939 drawing good; Flora Brasilica Vol XII I Hoehne 1940; The Orchids of Guatemala and Belize, Ames & Correll 1952; AOS Bulletin Vol 27 No 9 1958 drawing fide; Native Orchids of Trinidad Schultes 1960; Encyclopedia of Cultivated Orchids Hawkes 1965;Flora de Venezuela Foldats Volumen XV Part 1 1969 drawing good; Orchids of Peru, First Supplement Schweinfurth 1970; Flora of the Lesser Antilles Garay & Sweet 1974 drawing fide; Die Orchideen 3 Auflage Bd 1 Sonderabdruck aus Schlechter Lieferung 7 385 - 448 Brieger, Maatsch and Senghas 1975; Icones Planetarum Tropicarum Plate 1142 Hamer 1984 drawing ok; An Orchid Flora of Peurto Rico and the Virgin Islands Ackerman 1995 drawing ok; Flora of the Venezuelan Guayana Vol 7 Steyermark, Berry, Yatskievych and Holst 2003; The Orchids of Cuba Llamacho & Laramendi 2005; Guia de Orquideas de Chiapas Carlos Rommel Beutelspacher Baigts 2013 photo good; Herbarium-based studies on taxonomy, biogeography and ecology of Psilochilus (Orchidaceae) Drawing fide; * Herbarium-based studies on taxonomy, biogeography and ecology of Psilochilus (Orchidaceae) as Psilochilus macrophyllus var. brenesii Drawing fide; * Herbarium-based studies on taxonomy, biogeography and ecology of Psilochilus (Orchidaceae) as Psilochilus macrophyllus var. crenatifolus

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