A NITROGEN-GATHERING SHRUB FROM THE COMORO ISLANDS. 
(Psychotria bacteriophila Valeton; S. P. I. No. 44273.) 
Though similar to the leguminous plants in that it harbors bacteria which gather nitrogen from 
the air, it is totally unlike them in that these bacteria live in cavities in the leaves instead of in the 
roots. This fact gives a particular interest to the plant and suggests its possible value as a humus 
and nitrogen maker for the sandy pinelands of southern Florida, where it grows very well. Its 
brilliant red berries, produced in winter, make it an attractive greenhouse plant comparable to 
the ardisia. (Photographed by P. H. Dorsett, Buena Vista, Fla., November 7, 1921 ; P27437FS.) 
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