DISPERSAL BY WIND. 



867 



the style (with n„t suspended below) slides out o( the hole, around which the 

 penanth-lobes are eonnate, until its further progress is arrested by the butU,n iL 



Fig. 471.— Dispersion of fruits and seeds by tin 



^Trir'T"^; ^^d«u«m^o«^Aei » Valeriana tripteris. * Typha SchuttUwortHii. ^ Enophorran aug.u^f. 

 ^ Cynanchumfuscatum. i iticrotnena nervosa. ^ a.nd » Taraxacum ojjicinale. io Salix ifyrsinitet. 



stigma. The perianth here forms a beautiful parachute, with the nut lian^^iiig 

 freely below at the end of a string, like an enterprising balloon-gymnast. 



From the fruits and seeds equipped with parachutes we pass to those which are 

 embedded in masses of wool or in envelopes of silky hairs, and are thereby enabled 



