Philodendron bipinnatifidum

Arum pinnatifidum, Vell. 1831, published 1881
Philodendron pygmaeum, Chodat & Vischerm 1919, published 1920
Philodendron selloanum, K.Koch 1853
Philodendron sellowii, André 1866
Sphincterostigma bipinnatifidum, infrasubsp. published 1832

bipinnatifidum: bi = two, pinnatifidum = pinnately lobed

Hemiepiphytic or terrestrial at elevations below 500m, moist warm in rainforests, gallery forests, and various seasonal forest types including savannas (bras. Cerrado); in open swamps, occasionally lithophytic in open scrubby coastal and submontane vegetation

The original description of Philodendron bipinnatifidum was by Schott from a collection he brought to Vienna from Brazil, presumably from near Rio de Janeiro; no specimens have survived.
Philodendron selloum was described by C. Koch from material cultivated in the Berlin Botanical Garden and sent by H. Sello, the head gardener of Sans Souci, the Imperial Prussian estate in Potsdam, and a colleague and correspondent of Koch. In an article in the Botanische Zeitung, which appeared before the first valid description, Koch (1852) stated that his Philodendron selloum was the same as Vellozo's "Arum pinnatifidum." Koch considered Schott's Philodendron bipinnatifidum to be a different species.