Pleurothallis grandilingua Pupuplin, M Diaz and Pridgeon 2021 SUBGENUS Pleurothallis SECTION Macrophyllae-Fasciculatae Lindl 1859

Photo by Franco Pupulin and Harvard Papers in Botany Vol. 26, No. 1 2021, The Researchgate Website


Common Name The Large Lip Pleurothallis [an allusion to the large size of the lip in relation to other parts of the flower, uncommon in species of Pleurothallis]

Flower Size .8" [2 cm]

Found in San Jose province of Costa Rica restricted to the Pacific watershed of the Cordillera de Talamanca in lower montane rain forests to wet montane forests at elevations around 1450 to 2000 meters as a small sized, cool to cold growing, caespitose epiphtye with erect ramicauls enveloped by 1 to 3, tubular, obtuse, tightly adpressed, papyraceous, brown sheaths, one basal, another in the lower third and carrying a single, apical, coriaceous, dark green, paler on the underside, narrowly lanceolate, acute to subacuminate, rounded at the conduplicate base, the midvein protruding abaxially into a rounded keel, slightly decurring on the stem leaf that blooms in the early winter and again in the early summer on a filiform, .8" [2 cm] long, arising through a narrowly triangular, acute, brown, papery, prostrate, spathe, single flowered inflorescence witha triangular-ovate, subacute, glumaceous, much shorter thant the pedicel floral bract.

"Pleurothallis grandilingua is allied to the Costa Rican and western Panamanian endemic P. tonduzii Schltr., from which it can be distinguished by the broader leaves, the mostly purple flowers (the sepals greenish yellow to pink, the petals rose in P. tonduzii), the narrower synsepal, the ligulate petals (vs. falcate), and the subrectangular, slightly convex lip with the apex extended (vs. sagittate, the apex abruptly bent upward and then strongly geniculate)" Pupulin etal 2021


References W3 Tropicos, Kew Monocot list , IPNI ;

*Vanishing Beauty, Native Costa Rican Orchids Vol 2 Lacaena to Pteroglossa Pupulin 2020 drawing/photo fide

Harvard Papers in Botany Vol. 26, No. 1 2021, The Researchgate Website photo/drawing fide;