Euphorbia glomerifera (Millsp.) L.C. Wheeler (syn.: Chamaesyce glomerifera Millsp.) (Am.) – An exceptional and ephemeral alien. Recorded only once as a weed in a container with Phoenix canariensis in 1998 in Hooglede.
The rank of this species is debated. Some authors tend to accept it as a mere glabrous form of Euphorbia hypericifolia L. (Burch 1966, Oudejans 1990; see also Hügin 1998a).
Selected literature:
Burch D. (1966) The application of the Linnaean names of some New World species of Euphorbia subgenus Chamaesyce. Rhodora 68: 155-166.
Hügin G. (1998) Die Gattung Chamaesyce in Europa. Feddes Repert. 109(3-4): 189-223.
Oudejans C.H.M. (1990) World catalogue of species names published in the Euphorbieae (Euphorbiaceae) with their geographical distribution. Utrecht, the Netherlands: 444 p.