This name is a synonym of Cyclospermum leptophyllum var. latisectum (Urb.) Constance.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 1703387) with original publication details: Prodr. 4: 105 1830.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:842898-1.
This name was in version 1 of The Plant List, record tro-1703387.