Epidendrum andres-johnsonii Hágsater et E.Santiago 2013 GROUP Pseudepidendrum SUBGROUP Densiflorum

Photo © by E. Gandolla/TYPE Drawing by © Jimenez, Hágsater & E.Santiago and The AMO Herbario Website

Common Name Andres Johnson's Epidendrum [Argentinian Orchid Conservationist 1900's]

Flower Size 2" [5 cm]

Found in Missiones province of Argentina and into Mato Grosso do sul and Minas de Gerais states of Brazil at elevations around sealevel to 500 meters as a large sized, warm growing epiphyte with simple, cane-like, terete, thin, erect when young, arching by the weight of the inflorescence, straight stems carrying 14, alternate, articulate, narrowly elliptic, acute, basally clasping leaves that blooms in the fall on a terminal, paniculate, 10" [25 cm] long including the 1.2" [3 cm] long, thin straight peduncle hidden by a prominent tubular bract, laxly 40 to 50 flowered inflorescence with a basal, ovate-lanceolate, acute bract and much shorter than the ovary, triangular, acuminate, amplexicaul floral bracts.

"Epidendrum andres-johnsonii belongs to the GROUP Pseudepidendrum which is characterized by caespitose plants, cane-like stems, acute to acuminate leaves, usually apical inflorescence, without any spathaceous bract, though it may have several bracts, the mostly filiform petals and the lip usually 3-lobed (with 3 parallel fleshy keels), the apical lobe often bifurcate, the “bird-wing” type pollinia, at least the inner pair, and SUBGROUP Densiflorum where the short-pedunculate inflorescence is paniculate, flowering only once, flowers are green, the apex of the column and disc of the lip creamy-white, the calli sometimes tinged purple, the petals are linear-oblong to linear-oblanceolate, never filiform. The species is recognized by the narrowly elliptic leaves 2.08 to 6.68" x .52 to 1.16" [5.2 to 16.7 x 1.3 to 2.9 cm], the inflorescence paniculate and lax-flowered, with 3 few-flowered branches, the ovary thin and elongate, 1.04" [26 mm] long, the midlobe of the lip divided into a pair of divaricate, rectangular oblong lobes, with the apices obtuse. Epidendrum densiflorum has elliptic leaves .4 to .68" x 1.2 to 2" [10 to 17 x 3 to 5 cm], a densely many to 250 flowered inflorescence, somewhat smaller flowers, the lip has sub-quadrate, dolabriform lateral lobes and the midlobe divided into a pair of obliquely triangular, acute lobes, and the ovary is shorter, .44 to .68" [11 to 17 mm] long. Epidendrum hassleri Cogn. has a clearly 3-lobed lip, the lateral lobes dolabriform, wider than the mid-lobe which is widely emarginate, forming a pair of linear lobes. Epidendrum noackii Cogn. has very thin stems, leaves narrowly elliptic-lanceolate 3.2 to 5.6" x .6 To .88" [8 to 14 x 1.5 to 2.2 cm], inflorescence short, generally racemose and few-flowered, and the lip clearly 3-lobed with width of the mid-lobe much narrower than between the lateral lobes." Hagsater etal 2013


References W3 Tropicos, Kew Monocot list , IPNI ; *Icones Orchidaceaerum 14 Plate 1408 Hagsater 2013 drawing fide; Icones Orchidacearum 14 Plate 1423 Hagsater & Santiago 2013 See recognition section; Icones Orchidacearum 14 Plate 1436 Hagsater & Santiago 2013 See recognition section; Icones Orchidacearum 14 Plate 1450 Hagsater & Sanchez 2013 see recognition section; Icones Orchidacearum 14 Plate 1462 Hagsater & Sanchez 2013 see recognition section;