Pfeiffera

A Bolivian epiphyte with flattened stems, densely woolly areoles and intensely red to orange flowers. It belongs to the Pfeiffera boliviana lineage recovered in the plastid analysis.

A Bolivian species with pendent flattened stems and pale, almost spherical fruits. Flower form and colour differ among the plants examined. Plastid analysis revealed differentiation between the two sampled accessions.

An epiphytic cactus from Bolivia and northwestern Argentina, with ribbed stems, white flowers and pale fruits. Fruits from the Argentine Yungas were examined for their chemical composition, antioxidant activity and response in a bacterial mutagenicity assay.

A Bolivian species with ribbed armed stems and large orange flowers. Dark spines on the outer floral tissues help distinguish it from the similarly orange-flowered Pfeiffera monacantha.

A species from Bolivia and northwestern Argentina with orange flowers and angled or flattened stems. Variation in armature also includes the form described as subspecies kimnachii.

A Bolivian cactus with flattened stems, developed spines and olive-brown fruits. It can grow as an epiphyte or outside tree crowns. Plastid data link it with Pfeiffera boliviana.