TABLE 1. Comparison between C in Catasetum × grasineideae (Orchidaceae: Catasetinae), a new nothospecies from Brazilian Amazon and taxonomic notes for the genus

TABLE 1. Comparison between C. × grasineideae, C. gnomus and C. saccatum, according to Lindley 1840, Linden & Reichenbach 1870, Pessoa et al. 2015, Petini-Benelli 2017, 2020 and Krahl 2020.
TaxonCharacteristicsC. × grasineideaeC. gnomusC. saccatumInflorescenceErect, 1-5–flowered.Arched to pendent, 4-15–flowered.Recurved to pendent, ca. 27-flowersFlowersYellowish with brownish spots, lip more yellow, non-resupinate.Yellowish with strongly brownish spots on sepals and petals, non- resupinate.Yellowish with brownish spots, lip more yellow, resupinate.Sepalsca. 4 × 1.5 cm, elliptic-lanceolate.4–5 × 1.5–2 cm, obovate-lanceolate to elliptic.5–6 × 1 cm, elliptic-lanceolate.Petalsca. 4.1 × 1.6 cm, elliptic-lanceolate.4–5 × 1.5–2 cm, linear-lanceolate.5–6 × 1 cm, elliptic-lanceolate.ca. 3 × 4.5 cm, entire, subtrilobed, suborbicular, margin next to apex reflexed, margin denticulate to0.9–1.2 × 1.6–1.8 cm, trilobed, elmiform, margins reflexed2–3 × 3 cm, trilobed, suborbicular, lateral and median lobes reflexed, margin fimbriate, laciniate orLipserrate, central area sacciforme, with a transverse ostium and two small protuberance on the edge next to column.and serrate, with two acute protuberances on the internal margin.denticulate, central area sacciform with a transverse ostium and two small protuberances on the edga next to column.Columnca. 3.3 × 1 cm long.2–3 × 0.4 cm long.5–6 × 0.8 cm long.Antennaeca. 1.1 cm long, crossed.ca. 2 cm long., crossed.ca. 1.5 cm long., crossed.