Thanks, Chadwell ji. ---------- Forwarded message ---------- From: C CHADWELL <[email protected]> Date: 26 January 2017 at 09:11 Subject: ALIEN & ADVENTIVE plant species in India To: "J.M. Garg" <[email protected]>
When posting images of a plant it is HELPFUL that an indication is given as to whether the specimen was growing in the wild or cultivated. Just because a plant is not in a park, garden or field is not alone an indication of whether it is a NATIVE species. Some introduced species become naturalised and it can be difficult to tell they are not 'wild' or not, particularly if the photographer is not familiar with genera typically cultivated as crops or ornamental purposes. It is of significance whether a plant occurs naturally. Much is talked about CONSERVATION. It makes sense to concentrate our concerns about NATIVE species and NOT introductions. Some of the most eye- catching plants may well be INTRODUCTIONS - unfortunately, some are INVASIVE and troublesome. Where I live (and thus most frequently botanize) has MANY Alien plant species. Where I live in the UK is within the old county of Buckinghamshire (nowadays the newish boundary puts me in Berkshire). For recording purposes of The Botanical Society of Britain & Ireland (BSBI) I remain in 'Buckinghamshire'. I have a copy of the 'Flora of Buckinghamshire' from 1926; it is fascinating to compare the abundance (or not) of species then with nowadays - there have been many changes during the past century. The same no doubt applies in India. Collet's 'Flora Simlensis' (1921) allows a comparison with present day Shimla and surrounding areas. There is not an up-to-date Flora for Buckinghamshire but the useful 'A CHECKLIST OF THE PLANTS OF BUCKINGHAMSHIRE' Maycock & Woods (2005) is available. In it they include, in alphabetical order by genus and species, both NATIVE and ALIEN taxa. 'Native' taxa are those believed to be in Buckinghamshire entirely due to natural processes. 'Alien' taxa are those that have been introduced to Buckinghamshire by human activity (intentionally or accidentally). Those long established in Great Britain (i.e. before 1500) are known as ARCHAEOPHYTES; those established since 1500 are NEOPHYTES. Other aliens are listed as 'Casual' if they do not maintain themselves in the county by seed or vegetative means, or are obviously planted. Why 1500? The first of four voyages across the Atlantic by Italian Explorer Christopher Columbus took place in 1492 and led to the introduction of plant material. The Romans introduced quite a number of plants into Great Britain. Best Wishes, Chris Chadwell 81 Parlaunt Road SLOUGH SL3 8BE UK www.shpa.org.uk -- With regards, J.M.Garg 'Creating awareness of Indian Flora & Fauna' <http://en.wikipedia.org/wiki/User:Jmgarg1> Winner of Wipro-NFS Sparrow Awards 2014 for efloraofindia <https://sites.google.com/site/efloraofindia/award-for-efloraofindia>. For identification, learning, discussion & documentation of Indian Flora, please visit/ join our Efloraofindia Google e-group <https://groups.google.com/forum/#!forum/indiantreepix> (largest in the world- around 2700 members & 2,40,000 messages on 31.3.16) or Efloraofindia website <https://sites.google.com/site/efloraofindia/> (with a species database of more than 11,000 species & 2,20,000 images). The whole world uses my Image Resource <http://commons.wikimedia.org/wiki/Category:J.M.Garg> of more than a thousand species & eight thousand images of Birds, Butterflies, Plants etc. (arranged alphabetically & place-wise). You can also use them for free as per Creative Commons license attached with each image. Also author of 'A Photoguide to the Birds of Kolkata & Common Birds of India'. -- 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 an email to [email protected]. Visit this group at https://groups.google.com/group/indiantreepix. For more options, visit https://groups.google.com/d/optout.
