Didymiandrum Gilly, 1941

Costa, Suzana M., Vitta, Fabio A., Thomas, William W., Muasya, A. Muthama, Morokawa, Rosemeri, Bittrich, Volker, Shepherd, George J. & Do Amaral, Maria Do Carmo E., 2021, An updated generic circumscription for Cryptangieae (Cyperaceae, Poales) based on a molecular phylogeny and a morphological character reconstruction, Phytotaxa 483 (3), pp. 211-228 : 224-225

Didymiandrum Gilly , Bulletin of the Torrey Botanical Club 68 (5): 330-332 (1941).

Type species: Didymiandrum stellatum (Boeckeler) Gilly

Lagenocarpus sect. Didymiandrum (Gilly) T.Koyama, Makinoa 4:70–71 (2004).

Dioecious herbs, with short creeping rhizome; caudex absent. Leaf blades reduced to sheaths. Inflorescence terminal, solitary, panicle-like. Involucral bracts leaf-like, with elliptic to oblong-elliptic blades. Paracladia superficially monomorphic. Male spikelets 2–7 flowered; stamens 2 per flower. Female spikelets 1 flowered, 6–7 glumes; stigmas 3. Glumes spirally or sub-distichally arranged. Fruit (nutlet) stipitate, trigonous with sharp ridges, glabrous; hypogynous scales reduced and ciliate; beak short conical and glabrous, persistent.

The genus occurs on the Guyana Shield, in Colombia, Venezuela and Guiana and Brazil in borders of rain forest areas. Total number of species: 1 (one).

1. Didymiandrum stellatum (Boeckeler) Gilly, Bull. Torr. Bot. Club 68: 331 (1941).