OCHNACEvE. %Ql 



5. GOMPHIA OLIV^EFORMIS, St. Hil. 



Gomphia oUvceformis, St. Hil. Fl. Bras. Mer. 1, p. 67 ; Planch, in Hook. Lond. Jour. 

 Bot. 6, p. 11. 



Hab. Rio Janeiro, and on the Organ Mountains, Brazil. 



2. BRACKENEIDGEA, Nov. Gen. 



Calyx persistens. Antlierce (Jeeves) longitudinaliter deliiscentes. Stigma 

 leviter quinquelobum. Ovidum circa processum e fundo ovarii assur- 

 gentem curvatum, hippocrepicum. Semen angustum circinnatum. 

 Embryo semini conformis, gracilis; cotyledonibus anguste linearibiis ; 

 radicula centripeto-infera. — Flores urnbellatofasciculati. — Caztera 

 Gomphise. 



The plant from which this character is derived appears to be neatly 

 distinguished from Gomphia, by the longitudinal dehiscence of the 

 anthers, the nearly annular ovule and seed, curved around a large pro- 

 jection into the cell of the ovary (in the manner of Menispermum) , which 

 arises from its inner angle near the base, and by the slender embryo, 

 with narrowly linear cotyledons; to which may be added, as subsidiary 

 characters, the entirely persistent calyx, and the radiately somewhat 

 five-lobed stigma. The Gomphia? Hooheri, of Planchon, in Hook. 

 Lond. Jour. Bot. 6, p. 3, from Penang, is most probably a second 

 species of the genus; and some other Gomphiod of the Old World 

 make some approach to it in the curvature of the ovule, and have per- 

 sistent calyxes ; but the embryo and anthers of Gomphia, so far as 

 known, are different. 



The name selected for this genus is intended to commemorate the 

 important scientific services of Mr. William D. Brackenridge, the 

 Assistant Botanist of the Expedition, through whose indefatigable 

 zeal and industry this botanical collection was principally made, of 

 which he has himself elaborated the Ferns and the allied orders. 



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