May 26, 2013, 11:58:52 PM5/26/13
to J.M. Garg, efloraofindia, Dinesh Valke, Prashant awale, Satish Phadke, Nidhan Singh, D.S Rawat, Aarti S. Khale, Bhagyashri Ranade, surajit koley
The telling difference between Gazania and Arctotis is the outer involucre bracts which form a tube in Gazania whereas they are usually free or slightly united at base only.
As for three species of Gazania under discussion, they are described under two different species in both books by Bailey.
Bailey (Manual of cultivated Plants) described B. longiscapa DC., considered as synonym of G. linearis (Thunb.) Druce in Hortus third as well as in Plant List.
Similarly G. splendens Moore is considered as synonym of G. ringens R. Br. in both books by Bailey and the Plant List.
G. ringens: stem distinct, with 15-30 cm long ascending branches; heads 6-8 cm across, on 10-15 cm long
peduncles; teeth of involucre much shorter than tube, linear and acute; leaf margin not revolute.
G. linearis: Stem absent or very short; heads 4-7 cm across on up to 35 cm long scapes; teeth of involucre
as long as or linger than tube, linear-subulate and very finely pointed; leaf-margins mostly revolute..
Dr. Gurcharan Singh
Retired Associate Professor
SGTB Khalsa College, University of Delhi, Delhi-110007
Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018.
Phone: 011-25518297 Mob: 9810359089