Australia (Queensland: several disjunct areas), Northern Caucasus (introduced),
Transcaucasus (introduced), trop. Africa (introduced), Peru (introduced), Puerto
Rico (introduced), Cuba (introduced), Hispaniola (introduced), Panama
(introduced), Fiji (introduced), Thailand (introduced), China (introduced)
(Fujian (introduced), Guangdong (introduced), Guangxi (introduced), Hainan
(introduced)), Ecuador (introduced), Colombia (introduced), Society Isl.
(introduced) (Tahiti (introduced)), Wake Isl. (introduced), Hawaii (introduced)
(Kauai (introduced), Oahu (introduced), Molokai (introduced), Maui (introduced),
Hawaii Isl. (introduced)), Burma (introduced), Sri Lanka (introduced), Nepal
(introduced),
Society Isl. (introduced), USA (introduced) (California
(introduced)), Philippines (c), Morocco (c), Canary Isl. (introduced) (Gran
Canaria (introduced)), Micronesia (introduced) (Pohnpei) (introduced)), Trinidad
& Tobago (introduced), Mozambique (introduced)
as per Catalogue of Life;


   

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Requesting to please ID this tree from captured in Almora, Uttarakhand in November 2012.


Most likely Corymbia citriodora.


Thank you … for prompt ID….


 

Corymbia citriodora. 
Family: Myrtaceae (Location: Veer Jijamata Udyan, Mumbai)

Attached are pictures of Corymbia citriodora captured at Almora, Uttarakhand in November 2012.
Earlier posted on the forum and was identified.


 

 

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Posted earlier from Jijamata Udyan.

Common name Lemon Scented Gum.

Identified by … 

Kindly validate.

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Taken at Jijamata Udyan, Mumbai on 9/2/11.
Again a huge tree with white flowers.
Leaves fragrant.
Are both the sp (this & the one posted earlier) the same?


I assume your question “Are both the sp (this & the one posted earlier) the same?” meant to ask about the two subsequent posts.

They are two different species.

Look at the buds they are different. In the first post in it was narrow and pointed whereas, in the second post it is almost rounded.
The first one I identified because the buds were very clear but in the second post they are not as much clear as that of first post hence little struggle (for me) to reach the species.

Please check E. grandis of Myrtaceae for this post.


… not familiar with these trees … would have just passed it as Eucalyptus sp. !!


this may be Corymbia citriodora


 

Corymbia citriodora (Hook.) K. D. Hill & L. A. S. Johnson)
syn: Eucalyptus citriodora Hook.
Photographed from Delhi University campus. 
 


 

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Corymbia citriodora  from IARI regional Station Karnal
very large trees about 50 years old as told by the persons working there
leaves scented with lemonoid fragrance


Looks like a Eucalyptus species…..


Here some info……
Long ago in simpler times there was a large genus of about 700 species called Eucalyptus and a very small genus (with 7 species) called Angophora and together they were called gum trees by Australians because they looked very similar. The reason they were different is that they differed in two characters- unlike all the Eucalyptus species (whose flower buds are initially covered by a little cap), the buds of Angophora are naked and uncapped. That’s pretty fundamental esp. if you remember that the name ‘eu-calyptus’ means ‘well-covered’ pointedly refer to the bud caps. What’s more, unlike Eucalyptus, the flowers of Angophora have petals, tiny little ones, but petals nevertheless- and it wasn’t easy to avoid these differences.
This was the situation till 1995, when 2 australian botanists called Hill and Johnson published a paper formally recognizing a new genus called Corymbia, comprising 113 species that had been scooped out from genus Eucalyptus. The genus Eucalyptus had been subdivided into 7 to 12 sub-generic groups to manage its sprawling empire of almost 700 species and Corymbia was one of them. Hill and Johnson’s paper argued that all the species in the sub-group Corymbia differed enough from the rest of the species in Eucalyptus genus to merit becoming a genus on their own.
Many scientists resisted the change and continued to use the old name for Corymbia implicitly disagreeing from Hill and Johnson’s proposition. At the same time, studies in DNA sequencing were beginning to show that the Corymbia were in fact more closely related to Angophora than to Eucalyptus.
Yet resistance to the name change continued. One of the fear was that by the same logic, taxonomists might seek to promote all the separate subgenera of Eucalyptus into new genera. What probably rankled most of all was that – unlike the separation of Eucalyptus from Angophora, which was based on easily visible differences – the differences between Eucalyptus and Corymbia are at a subtle level, not easily recognized. There are no obvious characters of bark bud or foliage to mark the separation.
Acceptance of the new genus will be a long, slow process but for the moment, whatever genus one uses – Eucalytus citriodora or Corymbia cotriodora – the only tree that will be in reference is the lemon scented gum.


The bark of the tree smells like a lemon, which is an important indicator for ID of the species, whether it is  C.c.  or E.c.  This is one of the tanniferous trees (bark tannins), grows even in hot places like Chennai..


 

I had gone through Eucalyptus page very useful

I am adding Eucalyptus citriodora (in vegetative condition)
Distinct feature is young stem petiole and lamina are scabrid ; leaves alternate, ovate to broadly lanceolate, petiolate, sometimes peltate; 8-16 x 0.5-2 cm, acuminate, strongly lemon scented when crushed; petiole 13-20 mm long.


 

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