144 MANN, 



long, l'-2' wide, on rather dark-browu 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-gi'ooved style : stigma obtuse. Ovules 4- 6 in each cell. Drupe 

 egg-shaped, 1' long. Seed solitary. 



On the mountains of Oahii, rather common. 



Order XVI. ZYGOPHYLLACE^. 



Herbs or undershrubs, with opposite, mostly pinnate leaves. 

 Sepals and petals 4 or 6, imbricated or convolute in aestivation, 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 au 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 XVn. GERANIACEiE. 



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

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



[To be continued.] 



