27- 8-c
Cryptanthus undulatus var. purpureus is a synonym of:

Cryptanthus acaulis var. ruber Beer

(species acaulis)

Publ: Fam. Bromel. 76 (1856)

Type: Berlin Hortus s n. No specimen found. Variety typified by original description.

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Distribution: Known only from cultivation and no live nor herbarium material remaining.

Cryptanthus acaulis var. ruber