EUPHORBIACEAE

Breteler, F. J., 2005, (1833 - 1905): a discussion about their validity with some examples of nomenclatural consequences for the Gabonese flora in particular, Adansonia (3) 27 (2), pp. 325-335 : 328-329

EUPHORBIACEAE

GENERAL REFERENCES. — GOVAERTS et al. 2000;

LÉONARD 1962; RADCLIFFE- SMITH 2001.

Cyclostemon klaineanum Pierre , tab. Herb.

L. Pierre, del. E. Delpy 12/1900.

DELPY’ s illustration, bearing this name and present in K and P, is mentioned by HUTCHINSON (as C. klaineanus ) in synonymy under his Drypetes pierreana in the Flora of Tropical Africa. However, PIERRE’ s name is validly published and by transfer to Drypetes the specific epithet should have been maintained. The correct name therefore is: Drypetes klaineana (Pierre) Breteler , womb. nov.

Cyclostemon klaineanum Pierre , tab. Herb. L. Pierre, del. E. Delpy 12/1900 (coll. Klaine 572). — Type: Klaine 572, Gabon, near Libreville, fl. fr. Nov. 1896 - Feb. 1898 (holo-, P!; iso-, K!) .

Drypetes pierreana Hutch., Fl. Trop. Afr. VI. 1: 686 (1912). — Type: Klaine 572, Gabon, near Libreville, fl. fr. Nov. 1896 - Feb. 1898 (lecto-, K, here designated; iso-, P).

Klaineanthus gabonii Pierre , tab. Herb. L. Pierre, del. E. Delpy 11/1900, Fig. 2 .

The monotypic genus Klaineanthus is attributed to PRAIN (Bull. Misc. Inform., Kew 1912: 105 [1912s) who retained PIERRE’ s so-called Mss name, but changed the termination of PIERRE’ s epithet from “ gabonii ” into “ gaboniae ”. DELPY’ s illustration is found at BR, together with a duplicate of Klaine 1941 and also separately stamped “ex Herbario Musei Parisiensis”, as well as in P, together with Klaine 277, the other syntype. PIERRE’ s name is validly published. Therefore the correct name with the correct author citation is :

Klaineanthus gabonii Pierre.

Megabaria klaineanum Pierre , tab. Herb. L. Pierre, del. E. Delpy 12/1900.

Megabaria obovatum Pierre , tab. Herb. L. Pierre, del. E. Delpy 12/1900.

These two names are invalid, because they are simultaneously published without a description of the genus Megabaria . For details see LÉONARD (1995).

Plesiatropha klaineana Pierre , tab. Herb. L. Pierre, del. E. Delpy 11/1900, Fig. 3.

The name of the monotypic new genus Plesiatropha and its illustration are cited by HUTCHINSON in the Flora of Tropical Africa (1912) under his Mildbraedia klaineana . The illustration, present at K, but also at BR and P, is based on Klaine 846 and 1261 dated August 1898. PIERRE’ s valid new monotypic genus is congeneric with and has priority over PAX’ s heterotypic, at that time also monotypic, genus Mildbraedia , published in 1909 and based on M. paniculata Pax. This leads to the following nomenclature with two new combinations for two Mildbraedia species and two new combinations for two infraspecific taxa.

Figures

FIG. 2. — Klaineanthus gabonii Pierre, drawing by E. DELPY, XI.1900. After a copy in BR.

FIG. 3. — Plesiatropha klaineana Pierre, drawing by E. DELPY, XI.1900. After a copy in P.