Lepanthes acrogenia Luer & R.Escobar (1991: 94)
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publication ID |
https://doi.org/ 10.11646/phytotaxa.622.3.3 |
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DOI |
https://doi.org/10.5281/zenodo.10167661 |
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persistent identifier |
https://treatment.plazi.org/id/03FB9024-FF9C-FFB5-F4E9-820673A447E5 |
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treatment provided by |
Plazi |
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scientific name |
Lepanthes acrogenia Luer & R.Escobar (1991: 94) |
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Lepanthes acrogenia Luer & R.Escobar (1991: 94) View in CoL ( Figure 4A View FIGURE 4 ).
Type:— COLOMBIA. Nariño: Epiphytic in cloud forest above Ricaurte , alt. 1600 m, 3 Nov 1979, C . Luer et al. 4624 (holotype: SEL) .
Examined specimen: ECUADOR. Carchi: Reserva Dracula , coordinates omitted for conservation purposes, 1400 m, 30 Jul 2021, M. F . Monteros MFM216 ( QCNE) .
Distribution and ecology: Lepanthes acrogenia was previously known from the southwest of Colombia, in the department of Nariño. This species grows in cloud forests at 1600 m ( Luer & Thoerle 2012). Few records have been reported in the literature for this species, and the most recent ones have been documented on internet platforms such as Flickr.com (https://www.flickr.com/photos/semoreno/27422277878), also from Nariño. Recently L. acrogenia was recorded from the cloud forests of northwestern Ecuador in the Carchi province from 1400 to 2000 m of elevation ( Figure 5 View FIGURE 5 ), extending the distribution of this species 40 km to the south of the type locality and rising 400 m above the previous record from Colombia ( Figure 3 View FIGURE 3 ). In northwestern Ecuador, Lepanthes acrogenia has been observed blooming in situ between June and July.
Taxonomic Discussion: Lepanthes acrogenia is characterized by the long-pedicellate, distichous raceme borne on the top of a narrowly ovate leaf; the orange to dark red, ciliate sepals with denticulate margins; the externally spiculatecarinate veins; the deeply cucullate dorsal sepal; the narrowly triangular, free, and spreading lateral sepals. The petals are purple, cellular-glandular, transversely bilobed, the upper lobe is obtuse, much larger than the lower lobe. The connectives are broad with thickened margins forming the blades of the lip, and the appendix is large and fleshy, descending downward from the body ( Luer & Thoerle 2012). The morphological features of the known populations of L. acrogenia from northwestern Ecuador are generally similar to the Colombian populations. Nevertheless, Luer & Thorle (2012) described the petals of L. acrogenia as cellular-glandular, whereas the petals of the analyzed Ecuadorian specimens are pubescent.
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