Dieffenbachia grayumiana
Dieffenbachia grayumiana Croat

Dieffenbachia grayumiana is a member of the Araceae family, native to Chocó, Colombia, Costa Rica, and Panamá. This species was described by Croat in 2000. It is a stout herb, typically 1-1.5 m tall, with stems that are upright at the top and reclining at the base. The plant features glossy, variegated stems and petioles that are streaked with cream-white at the base. The leaves are narrowly ovate to oblong-ovate, with an acuminate apex and a subcordate base. The plant is found in light gaps and disturbed areas within primary forests, particularly at the La Selva Reserve in Costa Rica.
Description
Dieffenbachia grayumiana is a herbaceous plant in the Araceae family, growing up to 1.5 m tall. The stems are erect at the apical part and reclining at the older portion, with internodes 2.5-8.5 cm long. The petioles measure 24-59 cm in length and are sheathed for about 42% of their length. The leaves are narrowly ovate to oblong-ovate, 30-54 cm long and 10-32 cm wide, with one side slightly wider than the other. The apex is acuminate, and the base is subcordate, with a sinus up to 3.5 cm deep. The leaves are subcoriaceous, drying thin and slightly concolorous or bi-colorous. The species is reported to grow in light gaps and disturbed areas in primary forests at the La Selva Reserve in Costa Rica.
Distribution
Chocó · Colombia · Costa Rica · Panamá