The mints (Family Labiatae or Lamiaceae) includes over 6,500 species of
herbs, shrubs, and trees of cosmopolitan distribution. The family is characterized
by square stems and whorled inflorescences. The herbage is often covered with stout
hairs, and is often aromatic, being rich in essential oils.
Pollen light micrograph:
Labiatae pollen grains range from 25 - 35 µm in long axis and are prolate to sub-speroidal.
They are reticulate, and either tricolpate or hexacolpate.
The furrows are generally straight and narrow, and in hexacolpate grains may be alternately
shortened (see Hyptis emoryi SEM above).
The muri are low and very smooth. The lumina are more uniform in size than (e.g.)
Pollen scanning electron micrograph (SEM)
The floors of the lumina are micro (< 1µm) reticulate.
Production and Dispersal:
This insect pollinated family has low production and poor dispersal, but
the plants are so widespread that a few grains appear in many samples.
Moderate. The walls appear to be thin.
Quaternary - earlier record unknown.