In the Western Mediterranean region, the araar tree is a common element of the xerothermophilous forests near the coast, but other elements with a similar pollen type - such as Juniperus phoenicea - are also in the same habitat.
Creo que lo mejor es que consultes a la gran especialista en polen, Maria Fernanda Sánchez Goñi
Undoubtedly it would be great to distinguish pollen from Tetraclinis but as far as I know it is not possible to separate pollen grains among Cupressaceae. I have checked this point in the pollen atlas by Reille (the supplement 1) and pollen from Cupressus, Juniperus and Tetraclinis seems very similar to me (shape, exine structure...) Nevertheless, I can't provide any more specific reference on description and identification of Cupressaceae pollen. ¡Suerte!
Thanks-Gracias César. Recently I made the effort to differentiate morphologically some important taxa such as Pistacia lentiscus vs. terebinthus, Chamaerops humilis, as well as other xerothermophilous taxa from the macchia, but with Tetraclinis it looks impossible. Gracias otra vez.
La familia de las Cupressaceae junto con otras especies del orden Coniferales, excepto las Pinaceae, presentan pólenes con morfología similar y además existe reactividad cruzada entre ellos. Los pólenes son esferoidales sin aperturas, entre 19 y 38 micras de diámetro, con exina delgada e intina gruesa. Son arboles o arbustos de gran altura y muy longevos, que tienen polinización anemófila. Dentro de la familia de las Cupressaceae las más abundantes en España son los géneros Cupressus (C. sempervirens y C. arizonica) y Juniperus (J. communis).
Http://www.alergoaragon.org/2000/primera4.html
It is not possible to distinguish this pollen from the other cupressaceae.
A mon avis seules des déterminations basées sur des observations au microscope électronique à balayage permettraient de conclure
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