Tree ID request - RK75 - 29-Dec-2012

[Rashmi Khiani]

Hello all,

Requesting identification of this tree from Tungareshwer. Flowers and fruits not seen. Hope it can be identified from the foliage. Thanks.

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Kind regards, Rashmi

[radhaveach]

It looks like Trewia polycarpa

regards
Radha

[Rashmi Khiani]

Thanks a lot Radha ji for identifying this tree.

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Kind regards, Rashmi

[J.M. Garg]

Forwarding again for Id confirmation or otherwise please.

Some earlier relevant feedback:      

It looks like Trewia polycarpa regards Radha

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With regards,
J.M.Garg

http://en.wikipedia.org/wiki/User:Jmgarg1

'Creating awareness of Indian Flora & Fauna'
The whole world uses my Image Resource of more than a thousand species & eight thousand images of Birds, Butterflies, Plants etc. (arranged alphabetically & place-wise): http://commons.wikimedia.org/wiki/Category:J.M.Garg. You can also use them for free as per Creative Commons license attached with each image.

For identification, learning, discussion & documentation of Indian Flora, please visit/ join our Efloraofindia Google e-group: http://groups.google.co.in/group/indiantreepix (more than 2030 members & 1,42,000 messages on 31/12/12) or Efloraofindia website: https://sites.google.com/site/efloraofindia/ (with a species database of more than 7500 species).

Also author of 'A Photoguide to the Birds of Kolkata & Common Birds of India'. 

[J.M. Garg]

A reply:

"It looks like Trevia nudiflora var. polycarpa. 

Tapas Chakrabarty."

 

[Rashmi Khiani]

Thanks a lot Tapas ji for your response. Thanks again Garg sir for
your efforts.

I would like to learn how to differentiate between Trevia nudiflora
var. nudiflora and Trevia nudiflora var. polycarpa. Would really
appreciate if the experts here could explain the differences. Thank
you.

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Kind regards, Rashmi

[Tapas Chakrabarty]

Trevia nudiflora L., Sp. Pl. 1193. 1753; Müll.Arg. in DC., Prodr. 15(2): 953. 1866; Hook.f., Fl. Brit. India 423. 1887.  Mallotus nudiflorus (L.) Kulju & Welzen, Blumea 52: 124. 2007

KEY TO THE VARIETIES

1a.     Leaves, inflorescences and fruits glabrous                                      2

  b.     Leaves, inflorescences and fruits tomentose or pubescent                 3

2a.     Fruits 2 - 3.5 cm across, with very thick pericarp                                                                                                     1.2. var. nudiflora

  b.     Fruits 1 - 1.5 cm across, with very thin pericarp   1.3. var. polycarpa

3a.     Branchlets densely flocculent-cottony or woolly-tomentose; leaves entire along margins; fruits 2 - 3 cm across, densely white-cottony tomentose                                                     1.4. var. tomentosa

  b.     Branchlets softly pubescent; leaves dentate along margins; fruits 1.5 - 1.8 cm across, yellow pubescent                             1.1. var. dentata

1.3. var. polycarpa (Benth.) Susila & N.P.Balakr. in J. Econ. Taxon. Bot. 22: 351, f. 2. 1998.  Trevia polycarpa Benth. in Benth. & Hook.f., Gen. Pl. 3: 318. 1880; Hook.f., Fl. Brit. India 5: 424. 1887, p. p.  Mallotus polycarpus (Benth.) Kulju & Welzen, Blumea 52: 130. 2007.

Kan.: Bomvaro, Tumri;  Mal.: Pambara-kumbil;  Mar.: Petari;  Tam.: Anathuvarei, Kaanji, Raajni.

Fl. & Fr.  Mar. - Oct.

Distrib.  India: In evergreen forests, along hill slopes and river and stream banks, up to 1200 m altitude.  Madhya Pradesh, Maharashtra, Goa, Karnataka, Kerala and Tamil Nadu.  Very common in N. Kanara in Karnataka and Goa.

Endemic.

Copied and pasted from our unpublished work.

T. Chakrabarty.

[Ushadi Micromini]

Dr. Chakraborty: I am sure this key  will be very helpful all around, and thanks for the citation reference,
appreciate it.
usha di

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Usha di
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[surajit koley]

Usha Di,

As i was reading this thread i remember my Rauvolfia serpentina post, relating the correct use of "w" or "v".

And, i want to know if Trevia nudiflora L. and Trewia nudiflora L. are same species. According to The Plant List they are not, and Gurcharan Sir, many a time, pointed out the ambiguities in The Plant List.

Trewia nudiflora L. of The Plant List = Trevia nudiflora L. of FoC !

You may find the following links very interesting reading -

1. http://ia700609.us.archive.org/BookReader/BookReaderImages.php?id=mobot31753002433594&itemPath=%2F4%2Fitems%2Fmobot31753002433594&server=ia700609.us.archive.org&page=n546_w1150.jpg
   
2. http://ia700609.us.archive.org/BookReader/BookReaderImages.php?id=mobot31753002433594&itemPath=%2F4%2Fitems%2Fmobot31753002433594&server=ia700609.us.archive.org&page=n547_w1150.jpg
   
3. http://ia700609.us.archive.org/BookReader/BookReaderImages.php?id=mobot31753002433594&itemPath=%2F4%2Fitems%2Fmobot31753002433594&server=ia700609.us.archive.org&page=n548_w1150.jpg
   

I didn't know there was no "w" in the classical Latin alphabet!

Thank you,

Regards,

surajit

[Pankaj Kumar]

................................
2. Originally, Linnaeus (1753) spelled the genus name as ‘Trevia’, but
later he inconsistently used both ‘Trevia’ and ‘Trewia’ (see Nicolson
et al., Regnum Veg. 119, 1988). Since Linnaeus, almost all authors
have adopted the spelling ‘Trewia’. The present code (McNeill et al.,
Intern. Code Bot. Nom., Regnum Veg. 46, 2006: art. 13.4) gives
priority to the original spelling given in Species Plantarum (1753)
and therefore ‘Trevia’ should be used. However, since this genus is
here present only in the synonymy of Mallotus, we have continued to
follow the widely used spelling ‘Trewia’.
........................................

Ref: http://www.nationaalherbarium.nl/euphorbs/specM/Mallotus.htm

Hope this helps.

Pankaj

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[Tapas Chakrabarty]

We, in our treatment of Flora of India, do not agree that Trevia is a synonym of Mallotus.  We consider it to be a distinct genus.

TC

[Pankaj Kumar]

Taxonomy is a personal opinion. No one stops you in believing what you
want to believe. I still dont agree with Asclepiadaceae merging with
Apocyanaceae but many do. So cheer up :)
Pankaj

[surajit koley]

Thank you very much Pankaj Ji. The link seems to be the same what i copy-pasted in my Trewia post, last year - https://groups.google.com/forum/?fromgroups=#!topic/indiantreepix/eJFCyYVnbe0

Regards,

surajit

On Sat, Jan 12, 2013 at 12:34 PM, Pankaj Kumar <sahani...@gmail.com> wrote:

[surajit koley]

Thank you Sir, i  have noticed that The Flora of China also maintains two distinct pages for Trevia and Mallotus.

Regards,

surajit

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[Gurcharan Singh]

Surajit ji

The Plant List may be pardoned for this and many other confusions. To me the Flora of China (2008) position in maintaining  Trevia nudiflora L. and seems most logical:

"The genus name is most often given as “Trewia” but this is merely an orthographical variant of the original “Trevia” and there is no justification 

for its use without formal conservation.

 Kulju et al. (Blumea 52: 115–136. 2007) showed that Trevia is embedded within Mallotus, from which it differs only by the indehiscent fruit, and they transferred it to that genus, along with T. polycarpa Bentham, which they regarded as distinct. However, the name Trevia (1753) has priority over Mallotus (1790). For the sake of nomenclatural continuity, Mallotus should be formally conserved against Trevia because the former name is better known and has traditionally been applied to a much larger genus than the latter. The alternative would be many new combinations in Trevia. We are maintaining here the name Mallotus, which applies to a very easily recognized entity, until this nomenclatural issue is resolved"

-- 

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/ 

[surajit koley]

Sir,

I was searching my hard-disk for female flower of Trevia nudiflora L. I attach here pictures of the female flower that i think is T. nudiflora L.

Thank you very much for explaining the confusion between Trewia and Trevia and their relation to Mallotus.

Regards,

surajit

[Rashmi Khiani]

Thank you so much Tapas sir for sharing this data from your work. I am
really grateful. If I understand correctly, the difference between the
varieties nudiflora and polycarpa is in the characteristics of the
fruit. I am wondering if it is possible to identify the variety in the
absence of flowers and fruits. Thanks again.
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Kind regards, Rashmi

On Fri, Jan 11, 2013 at 9:48 PM, Tapas Chakrabarty <tcha...@gmail.com> wrote:
>

[radha veach]

The immature leaves of the 2 species are fairly similar and difficult to distinguish. Both sometimes have the dentate margins and vary in the amount of pubescence. They also vary greatly in size and shape.
In Trewia nudiflora the mature leaves tend to be more acuminate and longer than they are broad. The attached picture is of T. nudiflora. It was a tree with fruits so I could be quite sure.
In T. polycarpa the leaves are often as broad as they are long.
Also, I have never found T. nudiflora at Tungareshwar but there are plenty of T. polycarpa.

best
Radha

[radhaveach]

I was thinking again about these 2 species which have often been confused. This is partly because the marathi name Petari is used for both.

In the key, would it be useful to mention that in T. nudiflora L. the female flowers (and fruits) are solitary or at the most 2 or 3 together, and with longer peduncles, whereas in T. polycarpa Benth  the flowers (and fruits)are in many flowered racemes with short pedicels.? 

best regards
Radha

[Rashmi Khiani]

Thank you so much Radha ji for sharing your observations.

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Kind regards, Rashmi