Ionopsis × atalibae (Orchidaceae, Oncidiinae), a new natural hybrid from the Brazilian Amazon Krahl, Amauri Herbert Krahl, Dayse Raiane Passos Pansarin, Emerson Ricardo Phytotaxa 2021 2021-01-06 478 2 268 274 8VYHP Kunth 1815 [136,234,1524,1550] Liliopsida Orchidaceae Ionopsis Plantae Asparagales 1 269 Tracheophyta genus    Type: BRAZIL. Amazonas: Iranduba, RoadAM-070, 3 °11’33.10”S, 60 °12’24.59”W, 0 m a.s.l.,  06 July 2019, epiphyte in  Citrustree,  A. H. Krahl & F. C. L. Félix 1280( holotype, INPA-288758). Fig. 1, 2A, 2D, 2G. Species with intermediate morphology between  I. utricularioidesand  I. satyrioides. The leaves of  I. × atalibaeare deeply curved to supervolute-curved, and thick (vs. flat and coriaceous in  I. utricularioidesand acicular, thick and slightly furrowed in  I. satyrioides). The labellum of  I. × atalibaeis widely obovate ca. 1.1 × 1.0 cm, whitish to pale pink with dark purple oblique lines, apex deeply emarginate, while in  I. utricularioidesthe labellum is widely obovate, ca. 1.5 × 1.5 cm, whitish to pale pink with pale purple oblique lines, apex deeply emarginate, and in  I. satyrioidesthe lip is narrowly obovate, ca. 0.8 × 0.4 cm, pale purple with dark purple oblique lines, apex slightly emarginate. Epiphytic herb, caespitose. Pseudobulbs 0.7-1.5 × 0.2-0.6 cm, ovate or cylindrical, with a single apical leaf, covered by the sheaths of 3-4 lateral leaves. Leaves 2.7-15.2 × 0.4-0.6 cm, curved to supervolute-curved, fleshy, dark green, apex obtuse to acute. Inflorescence 13.2-22.5 cm, lateral, branched, with 9-36 resupinate flowers; floral bracts ca. 2 × 1 mm, lanceolate with an acute apex. Flowers whitish to pale pink; pedicel and ovary ca. 8 mmlong, cylindrical; dorsal sepal ca. 5 × 2 mm, ovate to oblong, apex obtuse; lateral sepals ca. 6 × 1.5 mm, oblong to lanceolate, connate at the base, apex acute; petals 6 × 3 mm, oblong to lanceolate, sub-falcate, apex obtuse; labellum ca. 11 × 10 mm, widely obovate, whitish to pale pink, with dark purple oblique lines and a yellow callus at the base, apex deeply emarginate; callus ca. 3 mmlong. Column ca. 2 mmlong, clavate, clinandrium with entire margins; pollinia 2, yellow. Fruit not seen.   Etymology:—the specific epithet honors Antônio Ataliba Félix, father of Francisco Clóvis Lima Félix, an orchid collector from Manaus ( Amazonas, Brazil) who found the studied population.  Additional specimens examined:—  Paratype: BRAZIL. Amazonas: Iranduba, RoadAM-070, 3 °11’33.10”S, 60 °12’24.59”W, 0 m a.s.l.,  06 July 2019,epiphyte on  Citrustree,  A .  H.  Krahl& F.  C. L.   Félix1281( LBMBP).  Specimens of  I. satyrioidesexamined:—  BRAZIL. Amazonas: Iranduba, RoadAM-070, 3 °11’33.10”S, 60 °12’24.59”W, 0 m a.s.l.,  06 July 2019, epiphyte in  Citrustree,  A. H .  Krahl& F. C. L.   Félix1276( LBMBP); ibid.,  A. H .  Krahl& F. C. L.   Félix1277( LBMBP); ibid.,  A. H .  Krahl& F. C. L.   Félix1278( LBMBP); ibid.,  A. H .  Krahl& F. C. L.   Félix1279( LBMBP); ibid.,  28 July 2019,  A. H .   Krahl1294( INPA 288760); ibid.,  A. H .  Krahl 1295( INPA 288759).  Specimens of  I. utricularioidesexamined:—  BRAZIL. Amazonas: Iranduba, RoadAM-070, 3 °11’33.10”S, 60 °12’24.59”W, 0 m a.s.l.,  06 July 2019, epiphyte in  Citrustree,  A. H .  Krahl& F. C. L.   Félix1272( LBMBP); ibid.,  A. H .  Krahl& F. C. L.   Félix1273( LBMBP); ibid.,  A. H .  Krahl& F. C. L.   Félix1274( LBMBP); ibid.,  A. H .  Krahl& F. C. L.   Félix1275( LBMBP); ibid.,  28 July 2019,  A. H .   Krahl1292( INPA 288761); ibid.,  A. H .  Krahl 1293( INPA 288762).   Distribution and habitat:—The new hybrid was collected in the municipality of Iranduba in the km 15 of the Road AM-070, between the municipality of Manaus and Manacapuru.  Phenology:—The flowering period of I. × atalibaeoccurs from July to August.  Ionopsis utricularioidesflowers from May to October, while  I. satyrioidesflowers from June to December. The flowering period of the sympatric parental species overlaps in the study area.  Morphological affinities:—The new hybrid possesses intermediate morphology between both parental species. The leaf disposition and shape are reminiscent of those of  I. utricularioides. The leaves are deeply curved to supervolutecurved, and thick. The labellum is widely obovate ca. 11 × 10 mm, whitish to pale pink with dark purple oblique lines, apex deeply emarginate ( Table 1). As in  I. utricularioides, the inflorescence of the hybrid is branched. However, it produces less flowers than  I. utricularioidesbut more than  I. satyrioides( Table 1). The size and shape of the hybrid flowers is intermediate between  I. utricularioidesand  I. satyrioides( Table 1, Fig. 2). 3340961313 2019-07-06 A, H, F, C, L Brazil Type -3.1925278 Road 1 -60.206833 Iranduba 1 269 1 Amazonas holotype 3340961311 2019-07-06 A Brazil -3.1925278 Road 1 -60.206833 Iranduba 4 272 1 Amazonas paratype 3340961302 [891,915,1285,1310] 2019-07-06 H Brazil true -3.1925278 Road 1 -60.206833 Iranduba 4 272 1 Amazonas paratype 3340961317 [925,1044,1284,1310] F Brazil Krahl 4 272 1 Amazonas paratype 3340961310 [1054,1076,1284,1310] C Brazil true Krahl 4 272 1 Amazonas paratype 3340961301 [1116,1361,1284,1310] LBMBP Brazil Felix 4 272 1 Amazonas paratype 3340961325 2019-07-06 A, H Brazil -3.1925278 Road 1 -60.206833 Iranduba 4 272 1 Amazonas 3340961309 [939,1123,1356,1382] F, C, L Brazil Krahl 4 272 1 Amazonas 3340961326 LBMBP, A, H Brazil Felix 4 272 1 Amazonas 3340961305 [202,382,1392,1418] F, C, L Brazil Krahl 4 272 1 Amazonas 3340961306 [393,769,1392,1418] LBMBP, A, H Brazil Felix 4 272 1 Amazonas 3340961307 [779,960,1392,1418] F, C, L Brazil Krahl 4 272 1 Amazonas 3340961312 [971,1347,1392,1418] LBMBP, A, H Brazil Felix 4 272 1 Amazonas 3340961315 F, C, L Brazil Krahl 4 272 1 Amazonas 3340961324 [229,773,1428,1454] 2019-07-28 LBMBP, A, H Brazil Felix 4 272 1 Amazonas 3340961303 [784,1232,1428,1455] 2019-07-28 A, H Brazil Krahl 4 272 INPA 288760 1 Amazonas 3340961304 INPA Brazil 4 272 INPA 288759 1 Amazonas 3340961316 2019-07-06 A, H Brazil -3.1925278 Road 1 -60.206833 Iranduba 4 272 1 Amazonas 3340961319 [939,1123,1536,1562] F, C, L Brazil Krahl 4 272 1 Amazonas 3340961318 LBMBP, A, H Brazil Felix 4 272 1 Amazonas 3340961308 [202,382,1572,1598] F, C, L Brazil Krahl 4 272 1 Amazonas 3340961328 [393,769,1572,1598] LBMBP, A, H Brazil Felix 4 272 1 Amazonas 3340961323 [779,960,1572,1598] F, C, L Brazil Krahl 4 272 1 Amazonas 3340961322 [971,1347,1572,1598] LBMBP, A, H Brazil Felix 4 272 1 Amazonas 3340961321 F, C, L Brazil Krahl 4 272 1 Amazonas 3340961320 [229,773,1608,1634] 2019-07-28 LBMBP, A, H Brazil Felix 4 272 1 Amazonas 3340961327 [784,1232,1608,1635] 2019-07-28 A, H Brazil Krahl 4 272 INPA 288761 1 Amazonas 3340961314 INPA Brazil 4 272 INPA 288762 1 Amazonas