122 MANN, 



2.- I. LOXGiFOLiuM Ciray. {Enum. No. 14.) Shrub G° high, more 

 or lijss, and glabrous throughout, with few stout branches, roughened 

 Witli the scars of the fallen leaves, and above with the persistent stip- 

 ules. Leaves clustered, coriaceous, G'-S' long, Ih'-^h' wide, obovate- 

 lanceolate, acuminate or rarely obtuse, acute at the base, reticulated- 

 veiny, the midrib prominent beneath ; the margins obscurely repand- 

 undulatc or serrulate. Petioles h'-W long. Stipules, sepals, petals 

 and stamens much as in No. 1. Eilaments subulate-linear, flattened, 

 about the length of the anthers. 

 With the preceding species. 



3. I. LAURiFOiJUM Gray. (Enum, iVb. 15.) Branches rather stout, 

 entirely glabrous, as is the whole plant. Leaves coriaceous, obloilg-lan- 

 ceolatc, somewhat narrowed at both ends, obtuse at the base, 3' long, 

 1' wide, sparingly and obscurely repand-serrulate, or entire, very short 

 petioled, shining above, pale beneath. Petioles only l"-2" long, sel- 

 dom longer than the stipules. Pedicels aline long, 2-bracted. Plowers 

 mostly like those of the preceding species ; except that the sepals are 

 lanceolate and much narrower. 

 With the preceding species. 



Order VII. BIXACE^. 



The type is the Arnotto, Bixa Orellana, a tree cultivated for the red 

 Coloring matter of the pulp whicii surrounds the seeds. Our only wild 

 plant of the order is of a genus which Is distinguished from all relat- 

 ed orders having a one-celled ovary Avith 2 or 3 parietal placentae, — 

 especially from the last and the next, — by being dicccious and apetal- 

 ous. 



1. XYLOSMA Porst. 



Sepals 4 or 5, scale-like, often ciliate, imbricate. Petals none. 

 Stamens indefinite ; anthers versatile, short. Ovary raised on an an- 

 nular disk. Placenta3 2, or rarely 3 -G, parietal, 2- few-ovuled. .Style 

 entire or more or less divided, crowned by the obtuse stigmas, or some- 

 times the stigma subsessile, broad and lobed. Berrj^ indehiscent, small, 

 2-14-seeded. Seeds obovoid, somewhat angular by mutual pressure, 

 smooth, crustaceous ; embryo straight, cotyledons flat. — Trees, often 

 spiny. Leaves toothed or entire. Flowers clustered in the axils, or 

 rarely shortly racemose. 



Genus of several species, scattered througli tropical and subtropical regions. 



1. X. HawaiensE Seemann. (Enum. Wo. IG.) Shrub 5°-10° high, 

 unarmed, glabrous. Leaves coi-iaceous, ovate or ovate-oblong, obtuse 



