Chlorocyathus monteiroae

It is a woody climbing plant. Its roots have rounded to cylindrical tubers that are 10–30 by 3–7 centimeters. The tubers exude a white latex when cut. Its slender, branching stems are up to 8 meters long are covered in soft hairs. Its leaves are positioned opposite one another on the stems. Its fleshy, egg-shaped to elliptical leaves are 10–60 by 5–30 millimeters and covered both surfaces in soft hairs. The leaves are dark green above and pale green below. The tips of the leaves are pointed to blunt and the bases are wedge-shaped to blunt. Its petioles are 1–10 millimeters long. Adjacent petioles have ridges between them on the stem that sometimes have secretory colleters. Its softly-haired inflorescences have 1–5 flowers. The inflorescences have peduncles that are 5–20 millimeters long. Each flower is on a pedicel that is 2–10 millimeters long. The pedicels have egg-shaped bracts that are 1–3 millimeters long. Its flowers have 5 egg-shaped sepals that are 2–4 by 1–2 millimeters with pointed tips. The undersides of the sepals are covered in soft hairs. Its 5 bright to light green petals are fused at the base forming a ribbed, cylindrical to bell-shaped, 4–6 millimeter-long tube. The egg-shaped petal lobes are 6–12 by 3–5 millimeters with tips that are pointed to blunt and margins that are folded back. The petals are covered in soft hairs on their outer surface. …