Sigmatostalix guatemalensis Schltr. 1911

Photo by Jay Pfahl

Flower Closeup

Photo by Dr Gilberto Escobar Copyright , and the Dr Leslie Garay Archives

Alba Variety

Photo by Arturo Carillo

Inflorescence?

Photo by Jay Pfahl

Another Flower?

Photo by Daniel Jimenez

to

Common Name The Guatemalan Sigmatostalix

Flower Size 5/8" [1.5 cm]

Found from Mexico south to Ecuador in humid forests at elevations of 1100 to 1700 meters as a small sized, tufted, cool to warm growing epiphyte at elevations of 1100 to 1700 meters with an ellipsoid or ovoid, compressed pseudobulb enveloped basally by leaf-bearing sheaths and carrying a single, apical, erect-spreading, elliptic-lanceolate or ligulate, obtuse to subacute, subcoriaceous leaf and blooms in the summer, fall and winter on a erect to suberect, loosely several flowered, to [13 3/4" [34 cm] long, racemose inflorescence arising on a mature pseudobulb from the leaf sheaths.

"Unlike other species from Central America, the claw of lip in S. picta present a rather deep channel, ending into a cyathiform, rounded callus, where the oil secreted at the base of column is collected (Dodson & Dodson 1980). Moreover, the lamina of lip of S. picta is broadly reniform and provided with two falcate, introrse lobules, which are inserted grossly at midpoint of the basal margins of the lip, a set of characters that has no parallels among Mesoamerican taxa." Pupulin 2003

Synonyms Oncidium guatemalenoides Chasr & NH Wms. 2008

References W3 Tropicos, Kew Monocot list , IPNI ; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922; The Orchids of Panama L.O. Williams & P Allen 1946 drawing good; Encyclopedia of Cultivated Orchids Hawkes 1965 drawing ok; AOS Bulletin Vol 35 No 10 1966 photo fide; AOS Bulletin Vol 39 No 3 1970; Icones Planetarum Tropicarum Plate 1161 Dodson 1984 drawing ok; Orchids Travel By Air A Pictoral Safari Mulder, Mulder-Roelfsema and Schuiteman 1990 photo fide; The Manual Of Cultivated Orchid Species Bechtel, Cribb & Launert 1992; Rudolf Schlechter Die Orchideen Band 1C lieferung 33 - 36 2057 - 2308 Brieger 1997 photo good; Native Colombian Orchids Vol 6 COS 1998 photo fide for first 3 photos; Harvard Papers in Botany, Vol. 8, No. 1, pp. 3559 Pupulin 2003 drawing fide; AOS Bulletin Vol 75 No 9 2006 drawing/photo fide; AOS Bulletin Vol 77 No 12 2008 as Oncidium guatemalenoides; Orchids of Costa Rica Vol 2 Morales 2009 photo fide; AOS Bulletin Vol 85 #8 2016 photo fide; Orchid Genera and Species in Guatemala Archila, Szlachchetko, Chiron, Lipinska, Mystkowska and Bertolini 2018; Vanishing Beauty, Native Costa Rican Orchids Vol 2 Lacaena to Pteroglossa Pupulin 2020 as Oncidium guatemaloides photo fide

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