Plukenetia polyadenia, Mull. Arg.

Cardinal-McTeague, Warren M. & Gillespie, Lynn J., 2020, A Revised Sectional Classification of Plukenetia L. (Euphorbiaceae, Acalyphoideae) with Four New Species from South America, Systematic Botany (Basel, Switzerland) 45 (3), pp. 507-536 : 530

22. PLUKENETIA POLYADENIA Müll.Arg. in Martius (ed.), Fl. Bras. 11 (2): 334. 1874.

Elaeophora polyadenia (Müll.Arg.) Ducke, Arch. Jard. Bot. Rio de Janeiro 5: 146. 1930.

TYPE: PERU. Maynas , E.F. Poeppig 2385 (lectotype designated here: G! [barcode G00441993 ] ; isolectotypes: F! [fragment], W [photo at F!] ; likely isolectotypes (mislabeled as E.F. Poeppig 2585): HAL [barcode HAL0140191 ; image!] , NY! [barcode 00273181 ] ).

Elaeophora abutifolia Ducke, Arch. Jard. Bot. Rio de Janeiro 4: 112. 1925. Plukenetia abutifolia (Ducke) Pax & K.Hoffm. in Engler & Prantl (eds.), Nat. Pflanzenfam., ed. 2, 19c: 141. 1931. TYPE: BRAZIL. Pará : Breves Antonio Lemos, margem inundada do Rio Tajapuru, 5 May 1923, A. Ducke s.n. (lectotype designated here: RB [accession 17893, barcode 00283479; image!]; isolectotypes: G [barcode G00441992; image!], IAN [accession 50621, barcode IAN05061 ; image!], K [barcode K000600770; image!], P! [barcode P00645482], S [barcode S-R-10641; image!], U [barcode U 0002066; image!], US [accession 1442272, barcode 01105949; image!]).

Notes —See Gillespie (1993) for species discussion and Gillespie and Armbruster (1997) for species description.

There is sufficient ambiguity over the type of P. polyadenia to warrant designating a lectotype. The specimen at G, where Muller worked, is limited to a single leaf and inflorescence fragment, suggesting the detailed type description was based on additional material. Three specimens of E.F. Poeppig 2385 reported on the Vienna Virtual Herbarium (https://herbarium. univie.ac.at; last accessed 28 November 2019) are likely candidates given that Poeppig’ s types are often housed at W ( Stafleu and Cowan 1983), however at the time of writing we were unable to access the specimens to make an assessment. In this situation, we designate a lectotype based on the only specimen that we were able to verify, housed at G.

Of the three syntypes cited in the protologue of Elaeophora abutifolia, A. Ducke s.n., RB 17893 has the best floral material. Overall, the U specimen (now housed at L) most clearly demonstrates the pistillate morphology, but by convention we lectotypify the original syntype housed in Ducke’ s herbarium at the Jardim Botanico do Rio de Janeiro. Remaining syntypes: BRAZIL. Para` ı: Bele`ım Marutucu` ı, capoeira u`ımida, 18 October 1923, A. Ducke s.n. (RB [accession 17892, barcode 00283480; image!]); SaÞo Fe`ılix do Xingu Estrada da Victo`ırio ao Forte, 21 April 1924, J.G. Kuhlmann 2051 (RB [accession 17895, barcode 00724931; image!], RB [barcode 00287343; image!], S [accession S-R-10855; image!], U! [barcode U 0002067]).