Gazania ? Arctotis ?

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surajit koley

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May 22, 2013, 10:59:55 AM5/22/13
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Dear Friends,

This is in connection with the posts -
  1. https://groups.google.com/d/msg/indiantreepix/Nh8yiwEcKts/iIJUSKrHcjYJ
  2. https://groups.google.com/d/msg/indiantreepix/CZXJ_z24m-w/kTdZ3ycO93MJ
I have already placed my queries in those above mentioned posts. You might have noticed it too.

Gazania

Let's assume the above two linked plants are Gazania. The Plant List has several species from the genera. My concern is only two, because all i could gather some info is based on the following two species -

Gazania linearis (Thunb.) Druce
Gazania rigens (L.) Gaertn.


Arctotis fastuosa Jacquin

J.M. Garg

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May 26, 2013, 9:40:46 AM5/26/13
to efloraofindia, Dinesh Valke, Gurcharan Singh, Prashant awale, Satish Phadke, Nidhan Singh, D.S Rawat, Aarti S. Khale, Bhagyashri Ranade, surajit koley

Forwarding again for any assistance in the matter please.



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Gurcharan Singh

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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
Surajit ji
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..



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surajit koley

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May 27, 2013, 9:41:57 AM5/27/13
to Gurcharan Singh, J.M. Garg, efloraofindia
Thank you Sir, i am adding this thread to the "key". Garg Sir, thank you.

Regards,
surajit
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