Cremastosperma monospermum

Cremastosperma monospermum (Rusby) R.E.Fr.

Cremastosperma monospermum is a tree or shrub in the Annonaceae family, native to Bolivia, Brazil (North and West-Central), and Peru. It was first described in 1931. The plant can grow up to 12 m tall with a trunk diameter of 4-10 cm. It has glabrous young twigs and petioles. Leaves are obovate to elliptic, 10-35 cm long, with a chartaceous texture and reddish veins underneath. The inflorescence consists of solitary or clustered flowers on leafy or leafless twigs, with glabrous or sparsely hairy peduncles and pedicels.

Description

Cremastosperma monospermum is characterized by its obovate, elliptic, or narrowly elliptic leaves, which are 10-35 cm long and 4-12 cm wide. The leaves are chartaceous, with a green to brown coloration, darker on the upper surface. The primary vein is 1-2 mm wide, and secondary veins number 6-10, with intersecondary veins 0-3. The inflorescence is composed of single flowers or clusters of two, borne on leafy or leafless twigs. Peduncles are 2-10 mm long, and pedicels range from 40-70 mm in length. The plant has two lower deltate bracts, approximately 0.8 mm in size, which are obtuse and fall off early. The plant is glabrous or sparsely covered with short, appressed hairs.