Lamiaceae (incl. Verbenaceae) Fortnight: TC03 - Leucas for id.

[Tapas Chakrabarty]

Goa, Kolem, roadsides, somewhat straggling.

Regards,

TC.

[J.M. Garg]

Forwarding again for Id assistance please.

Some earlier relevant feedback:

Leucas species in eFloraofindia (with details/ keys from published papers/ regional floras/ FRLHT/ FOI/ Biotik/ efloras/ books etc., where ever available)

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With regards,
J.M.Garg

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[J.M. Garg]

Thanks, Lalithamba ji.

---------- Forwarded message ----------
From: Lalithamba Avadhanam
Date: 4 May 2015 at 15:44
Subject: Re: [efloraofindia:222426] Lamiaceae (incl. Verbenaceae) Fortnight: TC03 - Leucas for id.
To: "J.M. Garg" <jmg...@gmail.com>

looks like Leucas chinensis

A.Lalithamba

[Smita Raskar]

This is Leucas biflora i thoght 

bcoz here stem loos quadrangular, leaves petiolate lanceolate 

Regards

Smita Raskar

308 Disha Residency,
Salaiwada,Sawantwadi 

Mob.09422379568 

[Tapas Chakrabarty]

Thank you all.

Regards,

TC.

[surajit koley]

Smita Madam,

I remember you identified my thread of Leucas biflora https://groups.google.com/d/msg/indiantreepix/RX4LT0YCOkY/vKha7wFYRfIJ.

Usually in L. biflora (Vahl) Sm. number of flowers per whorl is 1 to 4 (sometimes upto 6) and flowers are pedicellate. Here the number of flowers seems to be more than biflora and those flowers look sessile. Moreover flowers are densely arranged.

So, I request you to reconsider the ID of this species.

Thank you

With regards

surajit

[surajit koley]

It is interesting to note that account of Leucas chinensis (Retz.) R. Br. in FoC is a bit different than Indin sites like http://keralaplants.in/keralaplantsdetails.aspx?id=Leucas_chinensis. Also one has to take note of calyx mouth http://apps.kew.org/herbcat/getImage.do?imageBarcode=K000929492.

Interestingly, there is also one Leucas mollissima var. chinensis, one L. chinensis var. lanata ... etc which KEW thinks are synonyms of L. chinensis.

Thank you

Regards

surajit

[Smita Raskar]

http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200019772

http://nopr.niscair.res.in/bitstream/123456789/12044/1/IJTK%2010%283%29%20575-577.pdf 

find out difference between two here  please

i have seen L biflora not L chinensis  so you only decide

Thanks

Regards

[Tapas Chakrabarty]

I am happy that Surajitji is back armed with his websites and solutions with nomenclatural and identification problems.  I am sure now I will get the correct identity.

Regards to all.

TC.

[surajit koley]

Sir and Smita Ji,

I hesitate to say that this plate or photograph is not enough to identify the plant at species level. I am sorry Smita Ji I couldn't find differences of L. biflora and L. chinensis in the FoC and pdf links you have provided. I already have the pdf paper since 2012 - https://groups.google.com/d/msg/indiantreepix/RX4LT0YCOkY/6SrZFRng5MsJ. And when I write "account of Leucas chinensis (Retz.) R. Br. in FoC is a bit different than Indian sites" it means I have read FoC description.

While some authors think that L. biflora doesn't form flowering whorl, and quite naturally when we see that usually there are only 1 or 2 flowers per verticillaster, other authors use the term "whorl" when they note presence of 4 or more flowers.

Let's see what are Smita Ji's points -

• "stem looks quadrangular" = L. chinensis stem is or can be quadrangular
• "leaves petiolate" - as per Kerala site (I have pasted link earlier) L. chinensis leaves have petioles 0.5 to 3.5 cm long. So informs Indian Biodiversity Portal. In KEW herb petiolate leaf can be seen. Same can be seen in Taiwan site Attached here Retzius' account.
• "leaves lanceolate" = this is one thing I fail to find any ref. But I do not think only leaf shape can reject a probable ID. Because things are more favourable to L. chinensis thank to L. biflora.

Smita Ji, I also never seen L. chinensis but then I didn't see many many species.... yet I try.

Thank you

Regards

[Smita Raskar]

Thats what exactly i said on the basis of two links i have given i thought it is L biflora 

but as i said i have never seen L chinensis it is up to you to decide 

as you have come to conclusion it is L chinensis

i mean i stand corrected 

Thanks 

[surajit koley]

• Leucas chinensis

The problem is TPL thinks L. chinensis, L. chinensis var. lanata, L. mollisima var. chinensis ....all synonymous (with one or more star rating). But FoC thinks otherwise -

• http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200019772 (leaaves sessile to sub-sessile)
  
• http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200019776 (petiole to 1 cm, under mollissima)
  

Unfortunately FoC doesn't feature L. biflora.

It is interesting to note IPNI detail on Leucas chinensis R. Br. The protologue can be found (attached herewith also) at http://biodiversitylibrary.org/page/36315781#page/372/mode/1up.. More, interesting is account of Leucas by Brown in that protologue. Here is an illustration of decemdentata (it's a different taxon in TPL) - http://plantillustrations.org/illustration.php?id_illustration=56143&mobile=0&code_category_taxon=.

• Leucas biflora

IPNI informs"basionym not stated" for Leucas biflora (Vahl) Sm. Protologue of Leucas procumbens Thwaites can be found at http://www.biodiversitylibrary.org/page/528167#page/247/mode/1up This protologue refers Wight's illustration. Attached herewith Wight's account of the species.

I think I have provided ample links of websites for nomenclature and identification problems.

Unless we have the "work(s)" mentioned in another thread, along with more elaborate photographs of this species nothing is confirmed.

[M Swamy]

How about  Leucas chinensis?   Pl check this link - India Biodiversity portal  :http://indiabiodiversity.org/species/show/251140

On Mon, May 4, 2015 at 3:36 PM, J.M. Garg <jmg...@gmail.com> wrote:

[surajit koley]

I would like to put a question mark on its identity as Leucas chinensis (Retz.) R. Br. The species usually has 3-8 flowers per whorl; 1-1.5 cm long calyx tube, abruptly dilated mouth, broadly triangular spreading teeth -- all these characters are not clear in the attached photographs.

This can't be L. biflora as well.

L. montana (Roth.) Spreng can be straggler, but have truncate or rounded leaf base. L. lanata var. lanata, an erect perennial, has rounded or slightly narrowed leaf base. L. decemdentata var. decemdentata, an annual can have cuneate leaf base (L. chinensis also).

So, id of this one remains unresolved.

Thank you

Regards

surajit koley

a non-botanist member of

efloraofIndia google group

[Gurcharan Singh]

Forwarding for ID

Distributed as   Leucas species- Goa

My trying to key out species from FBI leads me to L. chinensis and not L. biflora in which we have just one two flowers at each node. But then this publication is interesting:

Leucas sahyadriensis (Lamiaceae: Lamioideae) an overlooked new endemic species from India and notes on Leucas chinensis | Phytotaxa (biotaxa.org)

Wight’s specimen from Peninsular India which Bentham considered as Leucas chinensis is different from Retzius specimen from China. A lectotype for this name is selected from specimens collected by Bladh for Retzius in China. In contrast, Wight’s specimen represents a new species endemic to southern Western Ghats, having long branches, broadly ovate leaves, funnel shaped calyx with a wide mouth and stellately spreading, broadly triangular teeth and the corolla 16–17 mm long.

I don't have access to full paper, but is worth comparison. It is also interesting that this paper came full 4 years after Surajit ji's critical analysis.

Group discussion at

Lamiaceae (incl. Verbenaceae) Fortnight: TC03 - Leucas for id. (google.com)

[Gurcharan Singh]

Forwarding for ID

Distributed as   Leucas species- Goa

My trying to key out species from FBI leads me to L. chinensis and not L. biflora in which we have just one two flowers at each node. But then this publication is interesting:

Leucas sahyadriensis (Lamiaceae: Lamioideae) an overlooked new endemic species from India and notes on Leucas chinensis | Phytotaxa (biotaxa.org)

Wight’s specimen from Peninsular India which Bentham considered as Leucas chinensis is different from Retzius specimen from China. A lectotype for this name is selected from specimens collected by Bladh for Retzius in China. In contrast, Wight’s specimen represents a new species endemic to southern Western Ghats, having long branches, broadly ovate leaves, funnel shaped calyx with a wide mouth and stellately spreading, broadly triangular teeth and the corolla 16–17 mm long.

I don't have access to full paper, but is worth comparison. It is also interesting that this paper came full 4 years after Surajit ji's critical analysis.

Group discussion at

Lamiaceae (incl. Verbenaceae) Fortnight: TC03 - Leucas for id. (google.com)

---------- Forwarded message ---------
From: tchakrab <tcha...@gmail.com>
Date: Saturday, May 2, 2015 at 7:43:28 PM UTC+5:30
Subject: Lamiaceae (incl. Verbenaceae) Fortnight: TC03 - Leucas for id.
To: efloraofindia <indian...@googlegroups.com>

[surajit koley]

Sir,

As per "Monograph On Indian Leucas...", by Dr. V. Singh, the species Leucas biflora features "flower-whorls laxly 1 to 6 flowers...".

I would rather select Leucas chinensis for the identity of this photographic plate.

Thank you

Regards

surajit

[J.M. Garg]

Forwarding again for validation as Leucas chinensis or otherwise.

---------- Forwarded message ---------
From: Tapas Chakrabarty <tcha...@gmail.com>
Date: Sat, 2 May 2015 at 19:43
Subject: [efloraofindia:222426] Lamiaceae (incl. Verbenaceae) Fortnight: TC03 - Leucas for id.
To: efloraofindia <indian...@googlegroups.com>

Goa, Kolem, roadsides, somewhat straggling.

Regards,

TC.

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With regards,
J.M.Garg

[J.M. Garg]

Thanks a lot, Sunoj ji

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With regards,
J. M. Garg

---------- Forwarded message ---------
From: Sunojkumar P <>
Date: Thu, 21 Oct, 2021, 4:33 pm
Subject: Re: [efloraofindia:222426] Lamiaceae (incl. Verbenaceae) Fortnight: TC03 - Leucas for id.
To: J.M. Garg <jmg...@gmail.com>

L. decemdentata

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Dr. Sunojkumar.  P
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[surajit koley]

Thank you Sir, for the corrected id of this Leucas.

Regards

surajit