| Popis: |
Updated key to the species of Triumfetta from Brazil (adapted from Fernandes-Júnior et al. 2018). 1. Androgynophore with 10 glands............................................................................................................................ T. decaglandulata - Androgynophore with 5 glands or absent..........................................................................................................................................2. 2. Inflorescence paniculiform; fruits with straight spines.......................................................................................... T. multiglandulosa - Inflorescence racemiform or cymes; fruits with uncinate spines......................................................................................................3. 3. Sepals at anthesis 15–20 mm long; petals 14–19 mm long...............................................................................................................4. - Sepals at anthesis 3.5–11 mm long; petals 3–9 mm long..................................................................................................................5. 4. Fruits sparsely spinescent................................................................................................................................................ T. longicoma - Fruits densely spinescent............................................................................................................................................... T. grandiflora 5. Leaves elliptic...................................................................................................................................................................... T. obscura - Leaves ovate, panduriform, and/or rhombiform................................................................................................................................6. 6. Flower without petals; androgynophore absent.................................................................................................................... T. lappula - Flowers with distinct petals; androgynophore present......................................................................................................................7. 7. Sepals 3–3.5 mm long; stamens 5; androgynophore quadrangular, membranaceous urceolus absent............................. T. sampaioi - Sepals 4–11 mm long; stamens 10–30; androgynophore ellipsoid to spherical, membranaceous urceolus present.........................8. 8. Sepals vinaceous, strongly cucullate, apical appendage ca. 0.5 mm long; androgynophore ca. 0.5 mm long; fruits cinereousvelutine......................................................................................................................................................................... T. rhomboidea - Sepals greenish-yellow, not cucullate, apical appendage 1–3 mm long; androgynophore 0.75–1 mm long; fruits glabrous or yellowish-pubescent..........................................................................................................................................................................9. 9. Stigma entire; fruits 4–5-loculate.................................................................................................................................. T. althaeoides - Stigma trifid; fruits 2–3-loculate.....................................................................................................................................................10. 10. Leaf blades covered only by stellate trichomes; petals elliptic; stamens 15–25............................................................ T. semitriloba - Leaf blades covered by stellate and simple trichomes; petals boradly obovate; stamens 25–35.................................... T. bogotensis |
