Tribulus.] ZYGOPHYLLACEAE. . 129 



Leaves ovate to lanceolate, acute to subcordate at the base, subglabrous 

 beneath : 



Flowers in large panicles; samara wings elliptic 2. Roxburghiana. 



Flowers in axillary fascicles ; samara wings orbicular ...3. canarensis. 



1. ASPIDOPTERYS CORDATA, A. Juss. ; F. B. I. i. 421. 



Deccan, in Kurnool, Bellary and Mysore. 



2. ASPIDOPTERYS ROXBURGHIANA, A. Juss. ; F. B. I. i. 420. 

 Triopteris indica, Roxb. Cor. PI. ii. t. 160. 



N. Circars, in hill country ; Deccan, Nallamalai Hills of 

 Kurnool, Sandur Hills of Bellary, etc. 

 8. ASPIDOPTERYS CANARENSIS, Dalz. ; F.B.I, i. 420. A.glomerata, 



Wt. Ic. t. 1986. 

 Deccan, in Mysore ; W. Ghats, Malabar to Tinnevelly. 



Family XXXII. ZYGOPHYLLACEAE. 



Herbs or shrubs or rarely trees. Leaves opposite or (by the 

 suppression of one of the pair) alternate, stipulate, 2-3-foliolate or 

 pinnate ; leaflets entire ; stipules persistent, sometimes spiny. 

 Flowers 1 or 2 together in the axils of the stipules, bisexual, 

 regular or irregular. Sepals 5 (or 4), usually free and imbricate. 

 Petals 5 (or 4 or 0), hypogynous, free, imbricated or contorted or 

 rarely valvate. Disk usually convex or depressed, eglandular. 

 Stamens as many as the petals, or twice (or thrice) as many, 

 inserted at the base of the disk ; filaments usually bearing a 

 scale at or below the middle ; anthers versatile. Ovary usually 

 sessile, furrowed angled or winged, (2-) 4-5 (-12)-celled ; ovules 

 1-2 or more in each cell ; style simple, terminal. Fruit 

 dividing into 2-10 cocci or capsular and septicidally dehiscent. 

 Seeds usually 1 in each cell ; albumen scanty or 0. 



Prostrate silky herbs with pinnate leaves, yellow flowers and prickly 



fruit t 1. Tribulus 



Erect prickly woody herbs with 1-3-foliolate leaves, pink flowers and 

 unarmed fruit 2. Fagonia. 



. Tribulus, Linn. 



Prostrate herbs. Leaves stipulate, opposite or sometimes 

 alternate, abruptly pinnate. Flowers solitary, pseudo- axillary, 

 white or yellow. Sepals 5, imbricate. Petals 5, spreading, imbri- 

 cate, fugacious. Disk annular, 10-lobed. Stamens 10 (or 5) ; 



