Disocactus biformis

Disocactus biformis (Lindl.) Lindl. (1845)

🌵 Author(s)	John Lindley
🌵 Published in	Edwards's Bot. Reg. 31: t. 9 (1845)
🌵 Basionym	Cereus biformis (1843)
🌵 Basionym author(s)	John Lindley
🌵 Basionym published in	Edwards's Bot. Reg. 29: misc. 51 (1843)
🌵 Type of	Disocactus

Etymology

Latin bĭformis ‘two-shaped’. For the two different stem forms, terete and flattened (Lindley 1845: “Rami adulti teretes […]; juniores alati”). Not “simulating both Epiphyllum and Phyllocactus” (Johnson, Smith & Stockdale, Plant Names Simplified. 3rd Edition. 2019); these genera are not mentioned in the protologue.