Euphorbia papillosa Saint-Hilaire (1824:18)

Silva, Otávio Luis Marques Da, Cordeiro, Inês & Caruzo, Maria Beatriz Rossi, 2014, Synopsis of Euphorbia (Euphorbiaceae) in the state of São Paulo, Brazil, Phytotaxa 181 (4), pp. 193-215 : 202

13. Euphorbia papillosa Saint-Hilaire (1824:18) ( Fig. 4F–H ). Type:— BRAZIL. Pasturages naturels du midi de la province de Sainte-Catherine et daus ceux de la province de Rio grande do sul, A.F.C.P. Saint-Hilaire 6952 (holotype P!, isotypes P!, MPU!).

Distribution and habitat:— Euphorbia papillosa occurs in Brazil, Paraguay, Uruguay and Argentina. In the State of São Paulo, the species is known by only one specimen, collected between rocks in a pasture.

Representative Specimen:— BRAZIL. São Paulo: “Córrego Alegre”, 03 January 1897, A. Löfgren CGG3465 (SP) .

Taxonomic notes:— Euphorbia papillosa may be easily distinguished among species with cyathia arranged in pleiochasia by its conspicuous indumentum all over the plant, while the others species ( E. chrysophylla , E. cordeiroae , E. elodes and E. rhabdodes ) are glabrate to glabrescent.

The only record for the state of São Paulo is a collection by A. Löfgren, from the Geological-Geographic Comission of São Paulo, from a locality called “Córrego Alegre” in 1897, in the region of Serra da Mantiqueira. During the fieldwork for this treatment, we did not succed in collecting this species. Since no new specimen was collected in the state of São Paulo in the last century, the species is considered “Presumably Extinct” in the state according to the criteria of Mamede et al. (2007) .

Figures

FIGURE 4. A–C: Euphorbia insulana. A. habit, B. cyathium with female flower exserted, C. cyathium with fruit. D–E: Euphorbia ophthalmica. D. habit, E. branch with synflorescence.F–H: Euphorbia papillosa. F. habit, G. stem and leaves, H. cyathium. Photos:A–C: R. Riina, D–H: O.L.M. Silva.