Chromolaena species- Khalsa College in Delhi

 
 
Chromolaena odorata or C. frustrata?: Since we are on with the discussion on Chromolaena vs Argentina, I thought it appropriate my photographs from Khalsa College in Delhi, where it is grown as a small hedge (rather as edgings), never allowed to grow higher than 30 cm, but when allowed to grow untrimmed may grow up to 50 cm tall. The leaves of this are much smaller, never broader than 15 mm, mostly 8-10 mm broad, 3-5 cm long.
I tried Flora of North America where it fits into C. frustrata. Please comment on this.

Here is the key:

Leaf blades mostly 1.5–4 cm; involucres 5.5–7.5(–8) mm 3 *Chromolaena frustrata <http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250066334>
* <http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250066334>*

+Leaf blades mostly (3.5–)5–10 cm; involucres (7–)8–10 mm 4 *Chromolaena odorata* <http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=242312602>


I think this is *Chromolaena odorata*
I think... is correct. I do not know anything about C frastrata, but have some pictures of C. odoreta and the leaves are different. I must admit here, I am a novice and may be wrong.

Earlier discussions on this topic: https://groups.google.com/forum/#!searchin/indiantreepix/Eupatorium/i... <https://groups.google.com/forum/#!searchin/indiantreepix/Eupatorium/i...>

Also I am attaching photos of similar plant taken at Kew Gardens, London on March 30 2011.


 

 
https://08511630493324166816.googlegroups.com/attach/ef2849794fc9158f/Chronolaema-frustrata-Delhi-3.jpg?part=0.3&view=1&vt=ANaJVrH3e_J96qEODrnO4EigkkGNJZ8c9RmrycypSnLFt_Pkp-AnP0GOeOZs0M97HgPEefjrljhcXG_8DyE8YyRC5Jzidjku77nKssNZi6wpXZ9g9Jka_mc
https://08511630493324166816.googlegroups.com/attach/ef2849794fc9158f/Chronolaema-frustrata-Delhi-2.jpg?part=0.2&view=1&vt=ANaJVrFneVATcox1He_5n9ihzLnKvWOV7zFV_ZtpIdho99-aK9toTSfws4pOaTQwnIh-xALUQsF_sjfzJuJXN-W70IDnGakbUXCBUyaNYLiHU5UjDXVz5EU
https://08511630493324166816.googlegroups.com/attach/ef2849794fc9158f/Chronolaema-frustrata-Delhi-1.jpg?part=0.1&view=1&vt=ANaJVrEJut4_8Bpt4D15zgzS-niMWDTjXi0x9FOJYyg_fWWgepQw_gW6iGTUVoX1ldjtyI83dVMfQ2aVcopw3XSK8mjOGifdnnAJ5lRaWYj0KeChmFsKMJ4

Asteraceae Fortnight Part 2-Discoid heads- Chromolaena frustrata from Delhi pl. validate-GS29 : Attachments (3). 3 posts by 2 authors.

In spite of trying a lot I have not been able to fix the identity of this plant. Pl. help.
 
Photographs from Khalsa College in Delhi, where it is grown as a small hedge (rather as edgings), never allowed to grow higher than 30 cm, but when allowed to grow untrimmed may grow up to 50 cm tall. The leaves of this are much smaller, never broader than 15 mm, mostly 8-10 mm broad, 3-5 cm long. I tried Flora of North America where it fits into C. frustrata. Please comment on this.
Here is the key:
Leaf blades mostly 1.5–4 cm; involucres 5.5–7.5(–8) mm 3 Chromolaena frustrata
+Leaf blades mostly (3.5–)5–10 cm; involucres (7–)8–10 mm 4 Chromolaena odorata
 
 
 
 
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