Epidendrum adsettii Serracín, J.S.Harrison, Bogarín & Sánchez Sald. 2016 GROUP Difforme

TYPE Photo by © Serracín, J.S.Harrison, Bogarín & Sánchez Sald. and and The AMO Herbario Website

Part shade Warm LATESummer EARLY Fall

Common Name Adsetti's Epidendrum [American orchid enthusiast and conservationist in Pamana current]

Flower Size 1.2" [3 cm]

Found in central Panama at elevations around 800 meters as a small sized, warm growing epiphyte with cane-like, basally terete, laterally compressed above, slightly sinuous above stems carrying 3 to 5, all along the stem, narrowly oblong-elliptic, unevenly retuse, coriaceous, conduplicate, green, 56 parellel light green nerved leaves that blooms in the late summer and early fall on a terminal from a mature stem, erect, without a spathe, sub-corymbose, sessile ocurring only once, 3 to 4 flowered inflorecence with much shorter than the ovary, triangular, acute, amplexicaule floral bracts and carrying resupinate, simultaneous flowers.

"Epidendrum adsettii belongs to the GROUP Difforme, which is characterized by the caespitose, sympodial plants, fleshy light green to glaucous leaves, apical inflorescence without the spathes, sessile, rarely with a short peduncle, one-flowered to corymbose, fleshy, and flowers green to yellowish-green, rarely white. The new species is recognized by the following combination of features: small plants, 6 to 9.2" [15- 23 cm] tall including the inflorescence, the coriaceous, narrowly oblong-elliptic leaves 2 to 3.6" x .52 to 1.04" [5 to 9 × 1.3 to 2.6 cm], bright green and shiny above when young and bumpy-textured when aged, with six evident parallel light-green nerves, inflorescence with 3 to 4 dull green flowers, sepals flat, margins not revolute, 3-lobed lip .52 x .86" [13.0 x 21.5 mm], deeply cordate with a pair of prominent basal erect auricles, flush on the sides of the column, lateral lobes (excluding the basal auricles), hemi-ovate, sides semi-circular, apex narrowly rounded; mid-lobe very short and wide, much smaller than the lateral lobes and separated by a narrow incision, transversely oblong, widely emarginate, apical corner of the lateral lobes level with the mid-lobe; calli curved, divergent, and the fimbriate clinandrium-hood. Most similar to E. anastasioi which has elliptic leaves, without evident nerves vs. narrowly oblong-elliptic leaves with six parallel light-green nerves, glossy flowers vs dull green, smaller flowers, sepals .52 to .64" [13 to 16 mm] long vs. .64 to .8" [16 to 20 mm], lip .32 to .36" x .56 to .68" [8 to 9 × 14 to 17 mm], semi-ovate lateral lobes, and mid-lobe protruding beyond the lateral lobes vs. a deeply cordate lip, .52 x .86" [13.0 x 21.5 mm], with a pair of prominent auricles at base, erect against the sides of the column in natural position, with widely obovate lateral lobes, mid-lobe small and wide, the apical margin of the lateral lobes protruding beyond the mid-lobe, and the dentate clinandrium-hood (vs. fimbriate). Epidendrum trialatum Hágsater, known from El Valle de Antón, Panama to northern Costa Rica, has elliptic-ligulate leaves vs. oblong-elliptic, the 3 to 6, greenish white flowers vs. 3 to 4, dull green, flowers smaller, sepals .52 to .6" [13 to 15 mm] long vs. .64 to .8" [16 to 20 mm], and the 4-lobed, sub-quadrate lip, .32 to .4" x .56 to .6" [8 to 10 × 14 to 15 mm] vs. 3-lobed, reniform, .52 x .86" [13.0 x 21.5 mm], column with a pair of apical petaloid, dentate-fimbriate, revolute processes vs. a column with a revolute, entire wing on each side, the margin entire. Epidendrum vulgoamparoanum Hágsater & L.Sánchez from the Pacific lowlands of Costa Rica and Panama has larger plants 6 to 14" [15 to 35 cm] tall vs. 6 to 9.2" [15 to 23 cm], flowers larger, sepals .84 to 1.28" [21 to 31 mm] long vs. .624 to .8" [16 to 20 mm], widely ovate lip with the margin slightly undulate and numerous radiating thickened veins at the base vs. reniform, without obvious numerous radiating veins, only two thickened veins from the base towards the apex, column truncate, without wings vs. a revolute, entire wing on each side, the margin entire." Hagsater etal 2016


References W3 Tropicos, Kew Monocot list , IPNI ; * Icones Orchidacearum 15 [2] Plate 1569 Serracín, J.S.Harrison, Bogarín & Sánchez Saldano 2016 Photo fide