Epidendrum neillii Hágsater & E.Santiago 2018 GROUP Aquaticum TYPE Drawing © by R Jimenez and The AMO Herbario Website

Part shade Cold SummerFall

Common Name Neill's Epidendrum [American Research Director and Professor at the Herbario Amazónico del Ecuador, Universidad Estatal Amazónica (ECUAMZ), in Puyo, Pastaza, Ecuador current]

Flower Size .6" [1.5 cm]

Found in southern Ecuador and northern Peru on the Machinaza plateau of the Cordillera del Condor occuring on a nearly level sandstone plateau with low scrub vegetation at elevations around 2420 meters as a small sized, cold growing terrestrial with cane-like, terete, erect, probably subapically branching stems carrying 13 or more on the single stem seen, distributed throughout, alternate, articulate, coriaceous, very rigid, fleshy, sub-spreading, all similar in size and shape with tubular, striated, rugose sheaths; blade oblong-elliptic, obtuse, minutely apiculate, margin entire, revolute leaves that blooms in the . Spathe lacking. Inflorescence 6 cm long, apical, paniculate (with a small second raceme arising from near the base of the peduncle), sub-erect, few-flowered; peduncle 5 mm long, sub-terete; rachis slightly sinuous. Floral bracts 5-10 x 6-10 mm, prominent, longer than the ovary, widely ovate, cucullate, subacute, embracing, rigid, forming a right angle with the rachis. Flowers 14, fleshy, non-resupinate, simultaneous, greenish yellow, lip and column lemon yellow; fragrance not registered.

"Epidendrum neillii belongs to the GROUP Aquaticum which is characterized by the monopodial, branching habit, the distichous, and erect to arching-nutant inflorescence, with fleshy flowers, and the disc of the lip and/or nectary often pilose. The species is recognized by the leaves 2.5-3.6 x 1.0-1.8 cm, oblong-elliptic with the margin revolute, inflorescence sub-erect and few-flowered with prominent floral bracts (5-10 x 6-10 mm), sepals 11 mm long, petals .33" x .094" [8.3 x 2.4 mm], oblanceolate with the apex rounded, and the lip entire with base truncate. Epidendrum alsum has similar-sized leaves but ovate, inflorescence nutant, sub-densely many-flowered, floral bracts small .2 to .26" x .16 to .2" [5 to 6 x 4 to 5 mm], embracing, sepals .32 to .36" [8 to 9 mm] long, petals .28 to .36 x .76 to .84" [7 to 9 x 1.9 to 2.1 mm], narrowly oblanceolate, apex acuminate, and the lip 3-lobed, base cuneate. Epidendrum urbanianum Cogn. has oblong-lanceolate leaves 1 to 3.8" x .4 to .8" [2.5 to 9.5 x 1.0 to 2.0 cm], inflorescence arching with the bracts nearly as long as the flower .2 to .48" x .28 to .4" [5 to 12 x 7 to 10 mm]; sepals .28 to .4" [7 to 10 mm] long, and petals linear, .22 to .28" x .4 to .6" [5.5 to 7.0 x 1.0 to 1.5 mm]. Other species related to this group from the Andean tepuys are Epidendrum stenocalymmum Hágsater & G.Calatayud, which has very similar floral bracts and flowers in size and shape, but the inflorescence is racemose, leaves 1.2-2.1 x 0.9-1.2 cm, ovate; petals 7.7-8.0 x 2.0-2.2 mm, oblanceolate with the base unguiculate, and base of the lip cuneate. Epidendrum lindamazonicum Hágsater & G.Calatayud has narrowly lanceolate-elliptic, leaves .56 to 1.08" X .12 to .2" [1.4 to 2.7 x 0.3 to 0.5 cm], inflorescence erect with small floral bracts .12 to .28 x .08 to .16" [3 to 7 x 2 to 4 mm), sepals .32" [8 mm] long, petals .023 x .16 to .44" [5.7 x 0.4 to 1.1 mm], linear, acuminate, and lip with a single apiculate callus. Epidendrum campylorhachis Hágsater & Dodson has narrowly elliptic, leaves .84 to 1.76" x .16 to .44" [2.1 to 4.4 x 0.4 to 1.1 cm], inflorescence with the rachis flexuous, with each segment incurved below the bract so that the bracts are retrorse, .088 to .16" x .12 to .16" [2.2 to 4.0 x 3.0 to 4.0 mm], flowers small, sepals .208 to .22" [5.2 to 5.5 mm] long, and base of the lip cuneate." Hagsater 2018

Synonyms

References W3 Tropicos, Kew Monocot list , IPNI ; *Icones Orchidacearum 16[1} Plate 1647 Hagsater & Sanchez 2018 drawing/photo fide;

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