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Re: Carduus help

As a thistle, all of which to my knowledge have a fluffy pappus on 
the achene (the apparent seed, actually a one-seeded fruit), Carduus 
acanthoides is primarily wind-dispersed. Sometimes, the fruiting 
heads do not open fully and the seeds remain trapped inside the 
involucre of bracts later to be released mechanically by animals 
chewing them open or treading on them, so animals may disperse them 
by gathering them for food and storing them or by getting them stuck 
in mud on their feet, etc.

James C. Trager -- Shaw Arboretum of the Missouri Bot. Garden.

> Date:          Sun, 6 Jun 1999 15:46:26 -0700 (PDT)
> From:          Rodrigo Mercader <rjmercader@ucdavis.edu>
> To:            prairie@mallorn.com, egsutter@ucdavis.edu
> Subject:       Re: Carduus help
> Reply-to:      prairie@mallorn.com

> 
> Hi, I was wondering if anyone could give me any information
> about the seed dispersal mechanisms of Carduus acanthoides.
> thank you
>  
> Rodrigo Mercader
> 
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