Stenandriopsis thomensis (Milne-Redh.) Heine

Daniel, Thomas F., 2020, Notes on the Vascular Flora of the Island of Príncipe (São Tomé and Príncipe) in the Gulf of Guinea, Proceedings of the California Academy of Sciences 66 (15), pp. 341-352 : 348

Stenandriopsis thomensis (Milne-Redh.) Heine

Príncipe: Obo Natl. Park-Príncipe, trail from ruins of Francisco Mantero (Maria Correia) to Pico Mesa, from 1.5 km (air) SE of ruins (01°35.317ʹN, 007°21.483ʹE, 350 m, lowland to montane rain forest) to summit of Pico Mesa (01°34.930ʹN, 007°21.201ʹE, 500 m, dwarf cloud forest), 19 IV 2013 (old inflorescences), T . Daniel et al. 11995 ( CAS) .

Several sterile plants and others bearing inflorescences lacking corollas were locally frequent under the forest canopy about two-thirds of the way up the prominent mesa in southwestern Príncipe. Although Stenandriopsis thomensis has been collected numerous times from several sites on São Tomé , this collection appears to represent only the second collection of the species on Príncipe (Daniel and Figueiredo 2009) . It was previously collected on that island at Pico Papagaio (01°36ʹ45ʺN, 007°23ʹ30ʺE; i.e., F. de Oliveira 547 at BRLU and STPH), some 5 km to the northeast. The species also occurs in Cameroon and Nigeria on mainland Africa ( Vollesen 1992; Daniel and Figueiredo 2009), but it has not been reported from either Bioko or Annobón in the Gulf of Guinea . Although two other species of the genus occur on Bioko, this is the only species of Stenandriopsis in São Tomé and Príncipe .