Six angiosperm pollen types studied with SEM are recorded in the Cretaceous (early Aptian) Tico´ flora on the basis of material recovered from two localities: Anfiteatro de Tico´ and Bajo Tigre. Clavatipollenites dominates, ...

Pollen limitation occurs when plants produce less fruits and/or seeds than they would with adequate pollen receipt. If the addition of cross-pollen to stigmas increases fruit/seed production, it is interpreted as an evidence ...

The aim of this paper was monitoring the airborne pollen diversity in the San Salvador de Jujuy city during one year, in order to document its richness and seasonal dynamics, as well as to detect pollen grains with allergenic ...

The nucellar beak is a proboscis-like outgrowth of the nucellus at the micropylar end, being the obliged path for the pollen tube entering the ovule. Among the few angiosperm families with nucellar beak, Cucurbitaceae is ...

Se describe la morfología de los granos de polen de las cuatro especies naturales de Cuba, del género Myrica: M. cerifera, M. punctata, M. shaferi, y M. cacuminis; las tres últimas endémicas cubanas. Las mayores afinidades ...

Bee pollen has been used for many years in both traditional medicine and supplementary nutrition, as well as in alternative diets, mainly due to its nutritional properties and health benefits. Bee pollen production is a ...

To characterise the botanical and geographical origin of honey from the Chaco region (Argentina), 189 samples of honey were examined for pollen content using standard methodology. A general feature was the high representation ...