14-232.1
Tillandsia williamsii is a synonym of:

Tillandsia virescens Ruiz & Pav.

(subgen. Diaphoranthema)

Publ: Fl. peruv. 3: 43 pl. 270 fig. b (1802)

Type: Ruiz & Pavon s n (isotype BM, GH photo; P), without exact locality, Peru.

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Distribution: PERU; BOLIVIA; CHILE; ARGENTINA;

Habitat: Saxicolous and epiphytic in dry habitats,, 500--4000 m. Elev.

Tillandsia virescens