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..
--
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
http://www.gurcharanfamily.com/
http://people.du.ac.in/~singhg45/
On Sun, May 26, 2013 at 7:10 PM, J.M. Garg <[email protected]> wrote:
> Forwarding again for any assistance in the matter please.
>
>
> ---------- Forwarded message ----------
> From: surajit koley <[email protected]>
> Date: 22 May 2013 20:29
> Subject: [efloraofindia:155691] Gazania ? Arctotis ?
> To: efloraofindia <[email protected]>
>
>
> 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.
>
>
> - typically forming a rosette of
> foliage<http://www.missouribotanicalgarden.org/gardens-gardening/your-garden/plant-finder/plant-details/kc/b329/gazania-linearis-colorado-gold.aspx>=
> *Gazania linearis* (Thunb.) Druce
> - a tender perennial that features decumbent stems that spread along
> the
> ground<http://www.missouribotanicalgarden.org/gardens-gardening/your-garden/plant-finder/plant-details/kc/a517/gazania-rigens.aspx>=
> *Gazania rigens* (L.) Gaertn.
> - cauline leaves can be
> found<http://plantillustrations.org/species.php?id_species=456173>=
> *Gazania rigens*
> Moench<http://www.theplantlist.org/tpl/record/gcc-127662>= please note the
> synonyms
> and/or basionym <http://www.theplantlist.org/tpl/record/gcc-43626> (do
> i sound expert? he he he!)
> - leaves can be lobed in both the species -
> http://www.efloras.org/object_page.aspx?object_id=57368&flora_id=1 and
> http://www.kew.org/plants-fungi/Gazania-linearis.htm
> - glabrous (not hairy) on the upper surface, but the undersides are
> thickly covered with soft, white
> hairs<http://www.kew.org/plants-fungi/Gazania-linearis.htm>,
> except around the midrib = *Gazania linearis* (Thunb.) Druce = you can
> see this feature in at least two images in my post
> - ray florets with dark abaxial
> stripe<http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250066797>=
> *Gazania linearis* (Thunb.) Druce = you can see the feature in one of
> my images
> - central dark spots and patches in ray florets = *Gazania linearis*
> (Thunb.)
> Druce = 1) http://florabase.dec.wa.gov.au/browse/profile/16311 2)
>
> http://keyserver.lucidcentral.org/weeds/data/03030800-0b07-490a-8d04-0605030c0f01/media/Html/Gazania_linearis.htm
> 3) http://www.kew.org/plants-fungi/Gazania-linearis.htm
> - *Gazania rigens* (L.) Gaertn. -
>
> http://www.missouribotanicalgarden.org/gardens-gardening/your-garden/plant-finder/plant-details/kc/a517/gazania-rigens.aspx
>
>
> *Arctotis fastuosa* Jacquin
>
>
> 1. http://plantillustrations.org/species.php?id_species=80906
> 2. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250066098
>
>
> Please, gift me your views.
>
> Thank you
> Regards
>
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>
>
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> --
> With regards,
> J.M.Garg
> http://en.wikipedia.org/wiki/User:Jmgarg1
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