Geranium, L. (1753: 676), L., 1753

Hurrah, Imtiyaz Ahmad & Wagh, Vijay Vishnu, 2021, Geranium aedonianum a new species of Geraniaceae from Ladakh, India, Phytotaxa 489 (3), pp. 241-251 : 248-249

Key to the species :— The species selected for the preparation of taxonomic key share various morphological resemblances with the new species but differs in other characters that are incorporated in key.

1a. Rootstock vertical; eglandular hairs upto 2.7 mm long; staminal filaments pilose on adaxial surface; mericarp reticulate without basal callus....................................................................................................................................................................... G. strictipes .

1b. Rootstock horizontal; eglandular hairs upto 1.1mm long; staminal filaments glabrous on adaxial surface; mericarp smooth with basal callus......................................................................................................................................................................................... 2.

2a. Ratio of main sinus length/middle segment length 0.76–0.85; petals purplish; cilia along margins of staminal filaments 0.1–0.6 mm long; narrow apex 2.8–4.5 mm long................................................................................................................................ G. collinum .

2b. Ratio of main sinus length/middle segment length 0.60–0.79; petals not purplish; cilia along margins of staminal filaments 0.2–0.3 mm only; narrow apex up to 9 mm long ...........................................................................................................................................3.

3a. Middle segment rhombic, 9.8 mm wide at base, 8–19 lobes; pedicel not more than 21 mm long; glandular hairs absent along the margins of staminal filaments; fruit 27–30 mm long ................................................................................................ G. himalayense .

3b. Middle segment obtrullate-obtriangular, 2.5 – 4.5 mm wide at base, 3 – 9 lobes; pedicel up to 38 mm long; glandular hairs present along the margins of the staminal filaments; fruit 38 – 40 mm long......................................................................... G. aedonianum .