Geum, L.

Khuroo, Anzar Ahmad, Hussain, Khalid, Gulzar, Ruquia & Ganai, Mansoor R., 2022, Geum rubrum comb. nov. (Rosaceae), elevation of Geum elatum forma rubrum to species rank, Phytotaxa 541 (1), pp. 66-72 : 71

Key to the Indian Geum species

1a. Styles not jointed, straight or curved and glabrous ............................................................................................................................2

1b. Styles jointed, entirely or interruptedly hairy.................................................................................................................................... 5

2a. Terminal leaflets of radical leaves scarcely longer and not broader than lateral leaflets .................................................................. 3

2b. Terminal leaflets of radical leaves much longer and broader than lateral leaflets ............................................................................ 4

3a. Petals yellow; achenes 10–24 per achenecetum; style straight in mature achene............................................................... G. elatum

3b. Petals red; achenes 6–8 per achenecetum; style curved in mature achene......................................................................... G. rubrum

4a. Sepals 3–6 mm broad; petals glabrous ......................................................................................................................... G. sikkimense

4b. Sepals 8–10 mm broad; petals hairy....................................................................................................................... G. macrosepalum

5a. Hypanthium flat; achenecetum obovoid-oblongoid .......................................................................................................................... 6

5b. Hypanthium convex or cup-shaped; achenecetum spheroid ..............................................................................................................7

6a. Achenes 200–250 per achenecetum; basal segment of style hairy................................................................................ G. aleppicum

6b. Achenes ca. 100 per achenecetum; basal segment of style glabrous .............................................................................. G. urbanum

7a. Terminal leaflets of radical leaves cordate-suborbicular....................................................................................................... G. roylei

7b. Terminal leaflets of radical leaves obovate .............................................................................................................. G. aequilobatum