144 MANN, 



long, l'-2' wide, on rather dark-brown petioles. Peduncles axillary, 

 longer than the petioles, 5- 6-flowered. Calyx of 5, ovate-lanceolate 

 somewhat acute, sepals, which are pubescent within, about 3" long. 

 Petals 3" long, oblong-ovate, pubescent outside, with revolute mar- 

 gins, bifid at the apex, but otherwise entire and obtuse. Torus discoid, 

 glandular. Stamens 14-16 : filaments short, pubescent : anthers linear- 

 oblong, emarginate. Ovary ovate, 2-celled and tapering into the sim- 

 ple two-grooved style : stigma obtuse. Ovules 4- 6 in each cell. Drupe 

 egg-shaped, 1' long. Seed solitary. 



On the mountains of Oahu, rather common. 



ORDER XVI. ZYGOPHYLLACE^E. 



Herbs or undershrubs, with opposite, mostly pinnate leaves. 

 Sepals and petals 4 or 5, imbricated or convolute in {estivation, with 

 the distinct stamens of the same number or 2 or 3 times as many (the 

 filaments usually furnished with an internal scale). Styles united into 

 one. Fruit berry-like, or of few or several, usually one-seeded, cocci, 

 which are often spiny. 



1. TRIBULUS Linn. [Nohu.] 



Sepals 5, imbricated in {estivation, deciduous. Petals 5, entire, 

 imbricated. Stamens 10, inserted at the base of the 10-lobed annular 

 disk. Ovary 5 - 12-celled, with an equal number of stigmas on a short 

 style. Ovules 1-5 in each cell. Fruit of 5-12 cocci, which are hard 

 and spinescent, and indehiscent. Seed solitary in each cell. Albumen 

 none. Branched herbs (or often woody at the base), prostrate and 

 spreading. Leaves opposite, abruptly pinnate, with stipules. Flowers 

 solitary on peduncles, white or yellow. 



A genus of several species, and found throughout the hot regions of the globe. 



1. T. CISTOIDES Linn. (Enum. No. 59.) A trailing perennial herb 

 or undershrub. Leaves 2' -4' long, of from 5 - 10 pairs of leaflets, 

 which are 3" -8" long, oblong, acute or obtuse, softly silky-hairy on 

 both sides, but whitish underneath. Peduncles nearly as long as the 

 leaves. Flowers large, l'-2' in diameter, yellow. Petals broadly 

 cuneate. Fruit 6" -8" in diameter, the cocci bearing spines 2" long. 



Near Diamond Hill, Oahu ; on the sand, and In similar localities, frequent. Also from 

 most of the Pacific Islands, the West Indies, Mexico, and tropical South America, &c. 



ORDER XVII. GERANIACE.E. 



Herbs or shrubs with palmately veined and often lobed, or some- 

 times palmately compound leaves. Sepals 5, imbricated in aestivation. 



[To be continued.] 



