hort.net Seasonal photo, (c) 2006 Christopher P. Lindsey, All Rights Reserved: do not copy
articles | gallery of plants | blog | tech blog | plant profiles | patents | mailing lists | top stories | links | shorturl service | tom clothier's archive0
Gallery of Plants
Tech Blog
Plant Profiles
Mailing Lists
    Search ALL lists
    Search help
    Subscription info
Top Stories
sHORTurl service
Tom Clothier's Archive
 Top Stories
Disease could hit Britain's trees hard

Ten of the best snowdrop cultivars

Plant protein database helps identify plant gene functions

Dendroclimatologists record history through trees

Potato beetle could be thwarted through gene manipulation

Hawaii expands coffee farm quarantine

Study explains flower petal loss

Unauthorized use of a plant doesn't invalidate it's patent

RSS story archive

RE: native North American aroids

Just to throw in my two-cents worth so to speak:  It is possible that 
Pistia stratioides originated in Asia or Africa and migrated to South 
America without the involvement of man.  There are at least two species of 
orchids which have managed this feat fairly recently.  The most well 
documented of these is Oeceoclades maculata which is "native" to the west 
coast of Africa in the general area where Africa and South America are 
"close" together.  In that habitat, the species grows terrestrially in 
sandy environments.  The species appeared in South America (localized to 
coastal environments) and the islands of the Carribean immediately 
following an atmospheric event which resulted is large quantities of red 
dust being blown from the African continent and deposited in these areas. 
 The species has a strong tendency to self-pollinate so seed production is 
prolific.  Since that time, this species has colonized a fairly substantial 
area of northern South America, the Carribean islands, most of Florida and 
the gulf coastal states where the winter temperatures don't get cold enough 
to freeze the ground.  There is also a species of Bulbophyllum which has 
apparently managed the migration (the only african member of an otherwise 
asian orchid genus).  If orchids can do, its not hard to imagine aroids 
managing the same feat.

Ron McHatton

 © 1995-2015 Mallorn Computing, Inc.All Rights Reserved.
Our Privacy Statement
Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index