Kempia longicolpites E.M.FRIIS, P.R.CRANE et K.R.PEDERSEN, 2019

Friis, Else Marie, Crane, Peter R., Pedersen, Kaj Raunsgaard, Mendes, Mário Miguel & Kvaček, Jiří, 2022, The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms, Fossil Imprint 78 (2), pp. 341-424 : 385

Kempia longicolpites E.M.FRIIS, P.R.CRANE et K.R.PEDERSEN, 2019

Text-fig. 30a–f

D e s c r i p t i o n a n d r e m a r k s. The material comprises two adhering stamens (only one cut stamen illustrated) with dithecate, tetrasporangiate anthers ( Text-fig. 30a) and in situ pollen. The stamens are about 1 mm long and 0.25 mm broad with a distinct, triangular apical extension of the connective. One stamen was cut transversely into two pieces to expose the pollen for SEM. The other stamen was removed for TEM. Stamens and anthers are closely similar to Kempia longicolpites described from the Torres Vedras locality ( Friis et al. 2019a) and the specimen is assigned here to the same species. Pollen grains are small, about 11– 12 µm long, monoaperturate and with the colpus extending beyond the full length of the grains. The exine is semitectatereticulate, columellate ( Text-fig. 30b–f) with the reticulum and columellae only loosely attached to the foot layer ( Text-fig. 30f). The muri have a rounded profile and a smooth surface ( Text-fig. 30c). The foot layer is thick, and the endexine is restricted to the apertural region ( Text-fig. 30e).

A f f i n i t y a n d o t h e r o c c u r r e n c e s. Kempia longicolpites was first described from the Torres Vedras locality ( Friis et al. 2019a) and is currently known from only the Torres Vedras and Catefica mesofossil floras.