Alstroemeria, Linnaeus, 1762

Nascimento, Jéssica, Nollet, Felipe, Guerra, Marcelo & Felix, Leonardo P., 2025, Morphological and karyotypic characterization of Alstroemeria urubiciensis (Alstroemeriaceae): a new species from Santa Catarina, Brazil, Phytotaxa 687 (2), pp. 278-286 : 284

Key to species of Alstroemeria with membranous leaves from southern Brazil

1. Flowers yellow-green, inner base of outer tepals papillate ........................................................................ Alstroemeria urubiciensis

- Flowers red, red-orange, or red-green, inner base of outer tepals not papillate.

2. Flowers red or red-orange, apex of upper outer tepal obtuse.

- Flowers red-green, apex of outer tepals acute to cuspidate............................................................................................. A. psittacina

3. Flowers exclusively red, inner tepals with ruby stripes, outer tepals red-variegated........................... A. inodora Herbert (1837: 90)

- Flowers red or red-orange, inner tepals with ruby stripes, outer tepals unmarked ............................................................... A. cunha