Pollen morphology of spanish cistaceae

Abstract

Pollen grains of 36 Spanish species of Cistaceae belonging to the genera Cistus L., Helian- themum Miller, Halimiitm (Dunal) Spach, Fumana (Dunal) Spach and Tuberaria (Dunal) Spach have been examined. The pollen of Cistaceae varies from prolate to spheroidal, being tricolporate with long ectoapertures and circular endoapertures. Five types of exine have been recognized: Reticulate-granular, rugulose, striate, retipilate and reticulate. Within Cistus there are species with rugulose, striate, retipilate and reticulate pollen, in Halimium only striate; in Tiiberaria striate and reticulate; in Helianthemum rugulose and striate; in Fttmana reticulate-granular and retipilate pollen. There is generally a good correlation between the taxonomic and the palynological data. © Taylor and Francis Group, LLC.