Pleurothallis circumplexa Lindl. 1838 SUBGENUS Acianthera [Scheidw.] Luer 1986

Photo by © Canek Ledesma Corral

Leaf and Inflorescence

Photo by © Weyman Bussey

HOLOTYPE and Drawing

HOLOTYPE by © Loddiges

to and

Common Name The Clasping Pleurothallis

Flower Size to 1/4" [7mm]

Found in Mexico, Guatemala, El Salvador, Honduras, Nicaragua and Costa Rica in high elevation cloud forests as a small sized, warm to cold growing, caespitose epiphyte that occurs at altitudes of 2000 to 2200 meters with a triangular, sulcate ramicaul carrying a single, apical, fleshy, elliptical, retuse apically, grey-green leaf that gradually becomes conduplicate into a long sinus and blooms in the spring and summer on a short, arising from the midvein below the middle of the leaf, fasciculate, to 1" [2.5 cm] long, few flowered inflorescence with longer than the ovary floral bracts and holding the flowers close to the leaf.

"Characterized by the leaf deeply decurrent on the winged ramicaul so that the raceme is borne nea the middle of the blade of the leaf. The racemes are short and distichous. The flowers are extremely similar to P chrysantha and they vary greatly in size." Luer 2004

Synonyms Acianthera circumplexa (Lindl.) Pridgeon & M.W.Chase 2001; Humboldtia circumplexa (Lindl.) Kuntze ?; Humboltia circumplexa (Lindl.) Kuntze 1891; Pleurothallis mesophylla A. Rich. & Galeotti 1845

References W3 Tropicos, Kew Monocot list , IPNI ;

* Edwards's Bot. Reg. 24(Misc.): 24 Lindley 1838;

Ann. Sci. Nat., Bot., sér. 3, 3: 16 A.Rich. & Galeotti 1845 as P mesophylla;

Revis. Gen. Pl. 2: 667. Kuntze 1891 as Humboldtia circumplexa; Orchids of Guatemala and Belize Ames & Correll 1952;

Encyclopedia of Cultivated Orchids Hawkes 1965;

Las Orquideas De El Salvador Vol 2 Hamer 1974 drawing/photo fide;

AOS Bulletin Vol 48 No 5 1979;

Orquídea (Mexico City), n.s., 7[3]: 1979;

Las Orquideas de El Salvador Vol 3 Hamer 1981 drawing ok;

Icones Planetarum Tropicarum plate 1090 Dodson 1984 drawing lip not right;

Icones Pleurothallidinarum Vol III Systematics of Pleurothallis Luer 1986;

An Introdution to the Orchids of Mexico Wiard 1987 photo fide;

AOS Bulletin Vol 67 No 7 1998 photo fide;

Guatemala Y Sus Orquideas Behar & Tinschert 1998 photo fide;

Lindleyana Vol 16 No 4:243 Pridgeon & M.W.Chase 2001 as Acianthera circumplexa;

Icones Orchidacearum 5 & 6 Orchids Of Mexico Parts 2 & 3 Plate 504 Hagsater, Soto 2002 as Acianthera circumplexa drawing good;

Manual de Plantas de Costa Rica Vol 3 Hammel, Grayum, Herrera and Zamora 2003;

Icones Pleurothallidinarum Vol XXVI Pleurothallis subgenus Acianthera aand Three Allied subgenera, A Second Century of new Species of Stelis of Ecuador, Epibator, Ophidion and Zootrophion Luer 2004

Icones Pleurothallidinarum Vol XXVI Pleurothallis subgenus Acianthera aand Three Allied subgenera, A Second Century of new Species of Stelis of Ecuador, Epibator, Ophidion and Zootrophion Luer 2004 Drawing fide;

Vanishing Beauty, Native Costa Rican Orchids Vol 1 Pupulin 2005 as Acianthera circumplexa phots fide;

Orchids of Costa Rica Vol 5 Morales 2009 photo fide;

Mille et Une Mini Orchideees Roguenant 2009 as Acianthera circumplexa photo fide;

Guia de Orquideas de Chiapas Carlos Rommel Beutelspacher Baigts 2013 as Acianthera circumplexa photo fide;

Algunas Orquideas de Mexico Tomo 1 Suarez 2013 as Acianthera circumplexa photo fide;

Diversity of Pleurothallidinae in Guatemala: An Endangered Orchid Subtribe with High Economic and Horticultural Potentials Edgar Mo Mo, Cetzal, Basu and Vega 2017 as Acianthera circumplexa photo fide;

Orchid Genera and Species in Guatemala Archila, Szlachchetko, Chiron, Lipinska, Mystkowska and Bertolini 2018 as Acianthera circumplexa

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

--------------------------------------------------------------------------------------

-------------------------------------------------------------------------------------------------------------------------