Lepanthes pembertonii S.Vieira-Uribe & J.S.Moreno 2022 SUBGENUS Lepanthes SECTION Lepanthes SUBSECTION Lepanthes SERIES Lepanthes

TYPE Drawing

TYPE Photos/TYPE drawing by Sebastian Viera-Uribe and Phytotaxa 567 (2): 149161 S Viera-Uribe & J S Moreno 2022 Two new species of Lepanthes (Pleurothallidinae, Orchidaceae) from the Alto de Ventanas, Colombia

LATER

Common Name Pemberton's Lepanthes [honors Robert W. Pemberton, Entomologist/Botanist, and generous donor to the expansion of the natural reserve that protects the habitat of the new species current]

Flower Size .08" [2 mm]

Found in Antioquia department of Colombia in primary forests on thin, moss covered branches over creeks at elevations around 2100 meters as a mini-miniature sized, cold growing, caespitose epiphyte with erect, slender ramicauls enveloped by 6 to 7, brownish, ribbed, thightly adpressed lepanthiform sheaths and carrying a single, apical, abaxially purple, thickly coriaceous, narrowly ovate, one main central vein, acute, incised and tri-apiculate apically, obtuse below into the petioalte base leaf that blooms in the later summer on a filiform .16" [4 mm] long, peduncle, arising and adpressed to the abaxial side of the leaf, rachis .28" [7 mm] long, congested, distichous, successively single, many flowered inflorescence with ovate, acute, covered with filiform papillae, shorter than the pedicel floral bracts.

"Lepanthes pembertonii, is both vegetatively and florally similar to L. anchicayae , Lepanthes petalopteryx and Lepanthes viahoensis , all of them with small plants bearing narrowly ovate, thickly coriaceous leaves and minuscule flowers that open below the leaf blade and have membranaceous yellowish sepals, erect, puberulous petals and a blade-less, puberulous, transversely bilobed lip with the lobes erect and surrounding the column. From Lepanthes anchicayae (Figure 3A), it is easily separated by the narrowly triangular upper lobes of the petals (vs. ovate, oblique, with a second point midway on the inner margin) and the lip with flabellate lobes (vs. cuneate) with an oblong, recurved and pubescent appendix in the sinus (vs. no appendix). From Lepanthes petalopteryx , it is differentiated by the leaves abaxially purple (vs. green), the petals with triangular lobes, the lower one the length of the upper one (vs. equally sized lobes that are obliquely subquadrate or oblong, obliquely truncate with the inner angles shortly acuminate-obtuse, the outer angles subacute) and the lip with flabellate lobes (vs. reniform lip) with an oblong, recurved, pubescent appendix (vs. no appendix). Finally, from Lepanthes viahoensis , the most similar species both, in plant and flower color and morphology, it is separated by having the petals with the upper lobe narrowly triangular (vs. obliquely triangular), the lower lobe triangular (vs. oblong, oblique at the apex) and the lip transversely bilobed with flabellate lobes (vs. subcordate lip) with an oblong, recurved, pubescent appendix in the sinus of the body (vs. no lip body, and a microscopic lobule in the sinus)." S Viera-Uribe & J S Moreno 2022

Synonyms

References W3 Tropicos, Kew Monocot list , IPNI ; * Phytotaxa 567 (2): 149161 S Viera-Uribe & J S Moreno 2022 Two new species of Lepanthes (Pleurothallidinae, Orchidaceae) from the Alto de Ventanas, Colombia drawing/ photo fide;

LANKESTERIANA 23(2). Karremans, Moreno, Gil-Amaya, Morales, Espinosa, Mesa, Restrepo, Rincon-Gonzales, Serna, Sierra-Ariza and Vieira-Uribe 2023 photo fide;

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