Geranium sect. Ruberta

Keshavarzi, Maryam & Esfandani-Bozchaloyi, Somayeh, 2018, Macro- and micro-morphological study of fruits and seeds in the genus Geranium (Geraniaceae), Phytotaxa 371 (3), pp. 185-204 : 193-199

Geranium sect. Ruberta

In two species examined, the surface was rugose with coarse irregular patterns. These irregular patterns are deeper in G. purpureum than G. robertianum . The mericarp is more or less glabrous to hairy with non-glandular hairs, 3 apical ridges and a proximal narrow aperture.

G. purpureum is easily separated from G. robertianum . As mericarp ornamentation in G. purpureum ( Figs. 8, O 1–O 2) comprises large and small gemmae and granules but in G. robertianum there are gemmate-microechinate ornamentations ( Figs. 9, R 1–R 2).