PHILODENDRON

Philodendron Schott, Wiener Z. Kunst 3: 780. 1829.

621 species

Philodendron bipinnatifidum

Philodendron bipinnatifidum Schott ex Endl., Gen. Pl. 1(3): 237. 1837; P. selloum K. Koch., Index Seminum (B, Berolinensis) 1853 (App.): 14. 1853; Arum pinnatifidum Vell., Fl. Flumin. 9: 387, t. 110. 1831 (publ. 1881); Thaumatophyllum bipinnatifidum (Schott ex Endl.) Sakur. in Calazans & Mayo. PhytoKeys 98: 60. 2018.

Hemi-epiphytic or terrestrial. Stem semi-erect, decumbent and sprawling, branching sparingly in basal parts, up to 3.5 m tall and 5-13 cm in diameter; adventitious roots dimorphic in epiphytic plants: anchor roots of smaller diameter and feeder roots of larger diameter, additionally aerial roots as prop roots giving support to stem; internodes small, ca. 1 mm or less; foliage leaf scars circular to transverse-elliptic. Prophylls deciduous, up to 45 cm long. Petiole 70-150 cm long, 0.7- 1.7 cm in diameter at apex, broadly sulcate adaxially, convex or rounded abaxially, sheath ca. 12 cm long on leaves subtending inflorescences. Leaf blades 75-120 cm x 60-120 cm, usually bipinnatifid, either weakly or strongly so, occasionally pinnatifid, variable in lobe and sinus shape, upper surface glossy dark green, lower surface paler, +/- glossy.

Flowering and Fruiting: Flowers and Fruits not observed
Common Names: Split-leaf philodendron, Lacy tree philodendron, Selloum, Horsehead philodendron