itself not being 
(Sele tae J aa gh Es Re aaa ae aa 
rs, Siam Y 
DISPERSION OF FRUITS AND SEEDS 69 
days or more; by this means vegetation must often have been 
carried from a continent to an outlying island. 
pees In some cases, appendages for dispersion are 
attached to attached to the seeds and not the fruits. Many 
Seeds. are furnished with hairs. One of the best known 
1s the Willow-herb. The seed-vessel splits into four pieces, 
which twist back ; the seeds are then exposed, and are seen 
to be provided with 
delicate hairs, so 
that the slightest 
wind wafts . them 
hither and thither. 
The seed of the 
West Indian Cotton 
is plentifully pro- 
vided with fibres, 
from which cotton 
is made, the seed : 

visible when the Fic. 95.—SgEp or Bicnonta ALBA, WITH 
pod first bursts. WING FOR DISPERSION. 
Bignoma alba is an instance of a seed with a large wing. 
The pod contains hundreds of these seeds. 
DISPERSAL OF FRUITS AND SEEDS. 
Agent. Organ. Name of Plant. 
Feathery styles of fruit ... Clematis. 
a le tees a pappus at-|p,, oho: 
Wind tachea to fruit ... 
Wings attached to fruit ... Ash, Sycamore, Maple. 
Wing attached to seed oe Bignonia alba. 
Hairs attached to seeds _—.... Cotton, Willow-herb. 
Water ee or fruits furnished ta | Water-lies 
air-spaces acting as floats 
: | Hooks of fruit... se6 ... Geum. 
Animals Succulent coat of fruit eee 
Ey onive This accompanies the de-\ Violet, Cucumber, 
Action hiscence of certain fruits... Vetches, ete. 
