Trikulus 



ZYGOPHYLLACE^ 



m[ 



solitary on axillary peduncles. Sepals lanceolate to ovate, soon 

 falling. Petals obovate, deciduous. Stamens 10 in 2 series, 

 the 5 opposite the petals exterior and usually a little longer, the 

 5 alternate with a small gland at the base outside. Ovary 

 5-lobed, 5-celled ; each cell divided by transverse partitions 

 into 3-5 compartments ; ovules one in each compartment 

 attached at the central angle. Fruit 5-coccous ; cocci few- 

 seeded, with 3-5 transverse compartments, at length separating, 

 leaving no central axis, not splitting open. Embryo without 

 endosperm. 



Species 12, natives of tropical and subti'opical regions of the 

 whole world, including south Europe. 



T. eistoides L. Sp. PI. 387 (1753) ; Descourt. Fl. Ant. iv. 

 t. 250 ; Macf. Jam. i. 185 ; A. Gr. Gen. ii. t. U5 ; Griseh. Fl. Br. 



Fig. bZ.—Tribulus eistoides L. 



A, Flowering branch with leaves X ?. 



B, Diagram of flower. 



0, Flower cut lengthwise, calyx and 

 corolla removed, showing pistil with 

 hypogynous disk (d), two stamens, 

 and one staminal gland (c/), X i. 



D, Fruit somewhat enlarged. 



B, Coccus cut lengthwise, somewhat 



enlarged. 

 F, Seed cut lengthwise, enlarged. 



(After A. Gray.) 



W. Ind. 134 ; Engl, in Fl. Bras. xii. pt. 2, 69 ; Vail & Bydh. in 

 N. Amer. Fl. xxv. 109. T. terrestris americanus &c. Pluk. Phyt. 

 t. 67, /. 4. T. foliis sex jugatis &c. Browne Hist. Jam. 220. 

 T. terrestris L. var. eistoides Oliv. Fl. Trop. Afr. i. 284 (1868) ; 



