Thank you for explaining the differences between the 2 species. regards Radha
On Monday, June 3, 2013 12:05:21 PM UTC+5:30, D.S Rawat wrote: > > Ageratum L. genus is represented in India by two species- *A. conyzoides*and > *A.houstonianum*. Both of these species are not native in India but are > invasive alien species originating in Tropical America. In Uttarakhand > these reach up to 2000m altitude in the Himalaya. These closely related > pantropica weed species can be differentiated as follows: > > Involucral bracts linear, sharply acute-acuminate, sparsely hairy; Corolla > of the florets 1.5mm long, shorter than awned pappus scale.... * > A.conyzoides* L. > > Involucral bracts linear setaceous, densely hairy; Corolla of the florets > 2.5mm long, as long as or longer than awned pappus .... *A.haustonianum * > Mill. > > DSRawat Pantnagar > -- You received this message because you are subscribed to the Google Groups "efloraofindia" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/indiantreepix?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
