Epidendrum angustisegmentum (L.O.Williams) Hágsater 1999 GROUP Spathiger SUBGROUP Rigidum

Plant and Flowers

Photos © La Selva Digital Flora Website


Drawing by © Jimenez, Hágsater & E.Santiago and The AMO Herbario Website

Part shade Hot LATESpring toFall

Common Name The Narrow Segmented Epidendrum

Flower Size 1/2" [1.25 cm]

Found in Costa Rica and Panama in coastal lagoons, beaches and palm grove vegetation at elevations around sealevel to 50 meters as a miniature sized, hot growing epiphyte with simple, cane-like, erect, laterally compressed stems producing new branches from the middle internode of the previous stem and carrying 2 to 4, in the apical half of the stem, alternate, coriaceous, elliptic, unequally bilobed, margin entire, articulate below into the base leaves that blooms in the late spring to fall on a terminal, racemose, occuring only once, distichous, erect, laterally compressed, ancipitose, 1.2 to 2.8" [3 to 7 cm] long, few flowered inflorescence arising on a mature growth, with 1 to 3, spaced out, conduplicate, ovate, obtuse bracts and with slightly shorter than the ovary, ovate, conduplicate, obtuse to acute floral bracts and carrying 3 to 5, successively opening, yellow to greenish yellow flowers that can be in all states of flowering, ie bud, flower, fruit at the same time.

Epidendrum angustisegmentum GROUP Spathiger SUBGROUP Rigidum characterized by the non-secund, mostly small flowers with the lip <.48" [12 mm] long. The species differs in the short stems carrying 2 or 3, short and narrow leaves that blooms on a 3 to 5 flowered inflorescence carrying flowers with .36" to .4" [9 to 10 mm] long sepals, petals that are .02 to .04" [.5 to 1 mm] long, and a very deep nectary.

"Closely resembling E. cardiophorum Schltr., E. angustisegmentum has short stems, 2 to 4 leaves short and wide in proportion, the inflorescence usually has 3 to 5 successive flowers in different stages from bud to fruit, the sepals are .36 to .4" [9 to 10 mm] long, petals .02 to .04" [0.5 to 1 mm] wide and nectary penetrating the full length of the pedicel. Both E. rigidum Jacq. and E. cardiophorum are closely related and have shorter floral segments, no longer than .28" [7 mm]. Epidendrum rigidum has a prominent, denticulate, clinandrium and floral segments are only partly open. Epidendrum cardiophorum has an entire, short, reduced clinandrium, spreading floral segments, more numerous flowers and longer, narrower leaves." Hagsater etal 1999

Synonyms *Epidendrum rigidum var. angustisegmentum L.O.Williams 1946

References W3 Tropicos, Kew Monocot list , IPNI ; The Orchids of Panama L.O. Williams & P Allen 1946 as E rigidum var angustisegmentum; Ceiba Vol 5 No 1 L O Williams 1956 as E rigidum var angustisegmentum; Icones Orchidacearum 3 Plate 308 Hagsater & Salazar 1999 drawing ok; Manual de las Plantas de Costa Rica Vol 3 Hammel, Grayum, Herrera and Zamora 2003; Icones Orchidacearum 13 Plate 1311 Hagsater & Santiago 2010 See recognition section; Icones Orchidacearum 17(1) Plate 1707 Hagsater & Jimenez 2019 see recognition section; Orchid Genera and Species in Guatemala Archila, Szlachchetko, Chiron, Lipinska, Mystkowska and Bertolini 2018