Epidendrum ruizlarreanum D.E.Benn. & Christenson 2001 GROUP Filamentosum

TYPE Drawing by Pastorelli, Bennet & Christenson

Part Shade Cool Spring

Common Name Ruiz-Larrea'a Epidendrum [Peru Shell Corp. Exec who provided a Helicopter to get to the remote location of this species current]

Flower Size .8" [2 cm]

Found in Cusco department of Peru in virgin forests on tree trunks in mosses at elevations around 1300 meters as a small sized, cool growing, caespitose epiphyte with a pendent, terete stem, basally with 5 to 6 scarious bracts, and carrying a single, apical, pendent, linear, acute leaf that blooms in the spring on a terminal, peduncle to .4 [1 cm] long, subsessile racemes to to 1.6" [4 cm] long, secondarily becoming few branched panicles, successively single, 3 to 4 flowered inflorescence with ovate, acuminate, much shorter than the ovary floral bracts and carrying resupinate, white flowers.

"Epidendrum ruizlarreanum D.E.Benn. & Christenson belongs to GROUP Filamentosum which is characterized by the thin, short pendent stems which originate successively from the previous stem, with a single, persistent, apical leaf (juvenile main stem has several leaves), linear-lanceolate, acuminate; inflorescence apical, short, racemose, flowers successive, fleshy; lip 3-lobed, the margin of the lateral lobes dentate to ciliate; anther narrowly ovoid, long, surpassing the apex of the column. The species is recognized by the white, concolor flowers, the entire lip with the margin fimbriate, high, laminar calli, and 3 narrow keels, the reniform anther is truncate. Epidendrum filamentosum has thin new stems produced from the middle of the previous stem, creamy brown flowers dorsally tinged pink, lanceolate sepals .36 to .6" [9 to 15 mm] long, filiform petals, and the short unguiculate lip with the margin of the lateral lobes dentate, low laminar calli, and the narrowly ovoid, elongate, apically bifid anther. Epidendrum moronense Dodson & Hágsater has thickened, pseudobublous stems 1.6" [4 cm] long, greenish white, non-resupinate flowers, reflexed sepals and petals nearly as long as the ovary, and the lip is reniform with the margin lacerate." Adapted from E filamentosum Icones Plate 1242 Hagsater etal 2009


References W3 Tropicos, Kew Monocot list , IPNI ; *Icones Orchidacearum Peruviarum Plate 651 Bennett & Christenson 2001 drawing fide; Icones Orchidacearum 12 Plate 1242 Hagsater 2009 see recognition section; LANKESTERIANA 14(1) 2014; Icones Orchidacearum 16[2] Plate 1668 Hagsater & Sanchez 2018 see recognition section;