264 PHANEROGAMIA. 



3. THRYALLIS, Mart. 



1. Thrtallis rotundifolia, Sp. Nov. 



T. foliis orbicularis subtus farinoso-incanis ; racemis cymoso-paniculatis 

 folia vix superantibus ; coccis acutissime cristatis. 



Hab. Brazil, near Rio Janeiro. (Also in the Brazilian collection 

 ofPohl, No. 1539.) 



A species intermediate in some respects between T. brachystachys 

 and T. latifolia; but distinguished from both by its orbicular leaves, 

 which are not in the least cordate at the base ; they are rounded at 

 both ends, or retuse at the apex, lh to 2 inches in length and breadth, 

 glabrous above, or stellately puberulent only when very young, 

 beneath tvhitened with a close farinose tomentum : there are usually a 

 pair of hemispherical glands at the base of the midrib, and often one 

 terminating its apex. Petiole 3 lines long. Stipules minute, cadu- 

 cous. Inflorescence and young branches minutely tomentose or fari- 

 nose. Racemes cymose-paniculate at the end of the branches, scarcely 

 exceeding the leaves. Sepals occasionally 6, ferrugineous-tomentose ; in 

 flower, ovate-rotund and barely 3 lines long; in fruit, becoming lan- 

 ceolate-oblong and 5 or 6 lines in length. Petals as in T. brachy- 

 stachys. Stamens 10, or occasionally 12. Cocci sharply crested, more 

 so than in T. latifolia, and the sides less strongly varicose ; otherwise 

 nearly similar. They appear externally to be fertile and perfect ; but 

 the cavity in those examined is nearly filled with the fibrous-spongy 

 growth from the endocarp, or placenta, which was noticed by Marti us 

 and Jussieu in T. latifolia. 



4. STIGMAPHYLLON, A. Juss. 

 1. Stigmaphtllon vitifolium, A. Juss. 



Stigmaphyllon vitifolium, A. Juss. in St. Hil. Fl. Bras. Mer. 3, p. 50, & Monogr. 

 Malp. 2, p. 105. 



