Cyperus nduru Cherm.

Cyperus nduru Cherm. View in CoL

Archives de Botanique, Mémoires 7: 18 ( Chermezon 1931).

LECTOTYPE. — Central AFrican Republic • Oubangui , Bambari; XII.1920; C. Tisserant 332; lectotype ( here designated): P [ P00569082 ].

REMARKS

In the protologue of this species Chermezon (1931) cited two gathering numbers, Tisserant 332 collected in Bambari in December 1920 and Tisserant 332bis collected in Région de la Waka in March 1928. These collection numbers are represented by five sheets in P (P00569082, P00569083, P00569084, P00569085 and P00569086). Duplicates of Tisserant 332 and 332bis are moreover located in BR (BR0000005572489 and BR0000005571833, respectively).

All collections from Bambari that were collected in December 1920 (i.e. Tisserant 332), are better developed than those of March 1928; the latter show younger specimens with poorly developed inflorescences. Tisserant 332 therefore is preferred for typification purposes. According to the Paris herbarium catalogue it is represented by two sheets: P00569082 and P00569083. However, the latter sheet – although numbered as ‘ 332 ’ – was made in December 1928 and is thus in fact referable to Tisserant 332bis. The confusing numbering has also led to dates and collection numbers being mixed up in BR, until corrections were made by P. Bamps. Nonetheless, the Tisserant 332 collection in BR (BR0000005572489) bears a mixture of confusing elements:it was allegedly collected in Bambari,indeed shows mature specimens with well-developed inflorescences but is dated (or was merely annotated?) 30 December 1928. No further dates are discernible on this specimen.

In short, only the P collectionP00569082 unequivocally dates from December 1920; it is here designated as the lectotype for this name. Due to the confusion surrounding the numbering of the other Tisserant collections, no isolectotypes are selected.