Jacobinia tinctoria ID 300809GS2

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Gurcharan Singh

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Aug 30, 2009, 9:56:17 AM8/30/09
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Jacobinia tinctoria ID 300809GS2, cultivated and naturalised in Ridge forest, Delhi
 
Not in our database
 
 
Dr. Gurcharan Singh
Associate Professor
SGTB Khalsa College
University of Delhi, Delhi
India
http://people.du.ac.in/~singhg45
jacobinia-tinctoria.jpg

Tabish

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Aug 30, 2009, 2:07:10 PM8/30/09
to indiantreepix
Looks very much like Justicia spicigera:
http://www.hear.org/starr/plants/images/image/?q=060810-8490
http://davesgarden.com/guides/pf/showimage/37345/
could not find any images of Jacobinia tinctoria or Justicia
tinctoria on the web.
- Tabish
>  jacobinia-tinctoria.jpg
> 452KViewDownload

Gurcharan Singh

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Aug 31, 2009, 8:56:18 AM8/31/09
to Tabish, indiantreepix
Tabish, you have a keen eye, keep it up

Jacobinia species are now placed in genus Justicia. Eflora of pakistan
describes Justicia tinctoria. Flora of Guetemala and Ecuador describe both
J. spicigera and J. tinctoria. Former has fusiform unopened corolla and
ovate leaves, latter narrowly funnelform corolla and elliptic leaves. Ours
matches with J. tinctoria. I hope you will agree.




Dr. Gurcharan Singh
Associate Professor
SGTB Khalsa College
University of Delhi, Delhi
India
http://people.du.ac.in/~singhg45

Tabish

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Aug 31, 2009, 11:00:46 AM8/31/09
to indiantreepix
Gurcharan ji,
Frankly, I don't even know what fusiform means - most of us in this
group are not botanists. However, I am unable to see any significant
different between the leaves and flowers in your picture, and those in
the links that I had sent. Or may be this one:
http://fm2.fieldmuseum.org/plantguides/view.asp?chkbox=9994
Am I missing something?
- Tabish

Gurcharan Singh

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Aug 31, 2009, 12:43:07 PM8/31/09
to Tabish, indiantreepix
Tabish ji
Fusiform means an elongated structure broader in the middle and narrowed at
two ends. I am descriptions of two species from Flora of Costa Rica.

Don't be surprised if inspite of several Floras following Justicia
tinctoria, you may hear new name for it. I find some problem with this name.
Justicia-jacobinia.doc
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