Microchilus foliosus (Poepp. & Endl.) D.Dietr. 1852
Photos by © Gerard Guillot The Orchidees de Guyane website
Drawing of Physurus densiflorus
Drawing by © von Martius, Eichler, Urban © and Wikimedia website
to 
Common Name The Leafy Microchilus
Flower Size .36" [9 mm]
Found in Surinam, Fr Guiana, Guyana, Venezuela, Colombia, Ecuador, Peru, Bolivia and Brazil in dense forests at elevations around 135 metes as a small sized, hot to cool growing terrestrial with an erect, leafy stem carrying ovate, obtuse, gradually narrowing below into the conduplicate, petiolate base leaves that blooms in the winter on a terminal, erect, 4" [10 cm] long, densely many flowered inflorescence with 2, lanceolate, acute, shorter thyan the ovary floral bracts and carrying the subglabrous flowers in an apical corymb.
This wide spread species is variable in the number of leaves [3 to 10] and the shape of the epipchile which can be sessile or produced basally into a short claw. It varies in shape from broadly lunate, rhombic, subquarate to transversly elliptic.
Synonyms Aspidogyne aratanhensis (Barb.Rodr.) Baptista 2005; Aspidogyne foliosa (Poepp. & Endl.) Garay 1977; Aspidogyne oreadum (S.Moore) Garay 1977; Erythrodes aratanhensis (Barb.Rodr.) Ames 1922; Erythrodes densiflora (Lindl.) Ames 1922; Erythrodes foliosa (Poepp. & Endl.) Ames 1922; Erythrodes oreadum (S.Moore) Pabst 1957; Microchilus densiflorus (Lindl.) D.Dietr. 1852 ; *Pelexia foliosa Poepp. & Endl.1837; Physurus aratanhensis Barb.Rodr. 1882; Physurus densiflorus Lindl. 1840; Physurus foliosus (Poepp. & Endl.) Lindl. 1840; Physurus oreadum S.Moore 1895;
References W3 Tropicos, Kew Monocot list , IPNI ;
Nov. Gen. Sp. Pl. 2: 17 Poepp. & Endl. 1837 as Pelexia foliosa
Gen. Sp. Orchid. Pl.: 503 Lindley 1840 as Physurus foliosus
Gen. Sp. Orchid. Pl.: 502 Lindley 1840 as Physurus densiflorus
* Syn. Plant. 5: 166 D Dietr. 1852
Syn. Plant. 5: 166 D Dietr. 1852 as Microchilus densiflorus
Gen. Spec. Orchid. 2: 290 Barb Rodr. 1882 as Physurus aratanhensis
Trans. Linn. Soc. London, Bot. 4: 479 Moore 1895 as Physurus oreadum
Studies in the family Orchidaceae Vol VII: 66 Ames 1922 as Erythrodes aratahensis;
Studies in the family Orchidaceae Vol VII: 70 Ames 1922 as Erythrodes densiflora;
Studies in the family Orchidaceae Vol VII: 70 Ames 1922 as Erythrodes foliosa;
Studies in the family Orchidaceae Vol VII: 75 Ames 1922 as Erythrodes stenocentron;
Flora Brasilica Vol XII II 13-43: 344 Hoehne 1945 as Physurus oreadum;
Flora Brasilica Vol XII II 13-43: 345 Hoehne 1945 as Physurus densiflorus
Flora Brasilica Vol XII II 13-43: tab 184 Hoehne 1945 as Physurus densiflorus drawing ok;
Flora Brasilica Vol XII II 13-43: 357 Hoehne 1945 as Physurus aratanhensis
Flora Brasilica Vol XII II 13-43: tab 196 Hoehne 1945 drawing ok;
Flora Brasilica Vol XII II 13-43: 353 Hoehne 1945 as Physurus foliosa;
Orquídea (Rio de Janeiro) 18: 215 Pabst 1957 as Erythrodes oreadum
Orchids of Peru Vol 1: 153 Schweinfurth 1958 as Erythrodes foliosa;
Orchids of Peru Vol 1: 157 Schweinfurth 1958 as Erythrodes multifoliata
Orchids of Peru Vol 1: 158 Schweinfurth 1958 as Erythrodes multifoliata drawing fide;
Orchids of Peru Vol 1: 163 Schweinfurth 1958 as Erythrodes stenocentron;
Flora de Venezuela Foldats Volumen XV Part 1 1969 as Erythrodes foliosa drawing fide;
Venezuelan Orchids Illustrated Vol. 5 Dunsterville and Garay 1972 as Erythrodes foliosa drawing not = Aspidogyne confusa;
Flora de Venezuela Volumen 15 Parte 1 Foldats 1969 as Erythrodes foliosa;
Orchidaceae Brasilensis Vol 1: 131 Pabst & Dungs 1975 as Erythrodes densiflora
Orchidaceae Brasilensis Vol 1: 287 fig 513 Pabst & Dungs 1975 as Erythrodes densiflora drawing good;
Orchidaceae Brasilensis Vol 1: 131 Pabst & Dungs 1975 as Erythrodes aratanhensis
Orchidaceae Brasilensis Vol 1: 287 fig 518 Pabst & Dungs 1975 as Erythrodes aratanhensis drawing good;
Orchidaceae Brasilensis Vol 1: 132 Pabst & Dungs 1975 as Erythrodes foliosa
Orchidaceae Brasilensis Vol 1: 2898 fig 533 Pabst & Dungs 1975 as Erythrodes foliosa drawing ok;
Orchidaceae Brasilensis Vol 1: 132 Pabst & Dungs 1975 as Erythrodes oreadum
Bradea 2: 202 Garay 1977 as Aspidogyne oreadum
Bradea 2: 201 Garay 1977 as Aspidogyne foliosa
Flora of Ecuador 225 [1] Garay 1978 as A multifoliata;
Rudolf Schlechter Die Orchideen Band 1C lieferung 40 pg 2492 - 2564 Brieger 2000 drawing fide;
Native Ecuadorian Orchids Vol 2 Dodson 2001 as Erythrodes multifoliata drawing fide;
Bol. CAOB 58: 50 Baptista 2005 as Aspidogyne aratanhensis
Harvard Papaers in Botany vol 14, No. 2: 114 Ormerod 2009 as Aspidogyne foliosa;
Orchids of French Guiana Szlatchenko, Veyret, Mytnik-Ejsmont, Sawicka, Rutowski and Baranow 2012 drawing;
Orchidees du Bresil As Orquideas da Serra Do Castelo Vol 1 Chiron & Bolsanello 2015 drawing good/photo hmm;
Materials to the Orchid Flora of Colombia Vol 1: 413 Szlachetko & Kolanowska 2017 as Aspidogyne foliosa; drawing fide;
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