CLASS XI. ORDER HI. 201 



all sessile except the terminal one. Stipules large, semicircular, 

 cut-serrate. Spike long, erect, hairy. Flowers thinly scattered, 

 on short stalks, yellow. Calyx persistent armed with hooked 

 bristles. The plant is astringent and tonic. — By fences and 

 thickets. — June, July. — Perennial. 



TRIGYNTA. 



213. EUPHORBIA. 

 Euphorbia helioscopia. L. Sun Spurge. 



Umbel five rayed, then three rayed and forked ; 

 invohicels obovate; leaves wedge form, serrate. L. 



A weed in rich ground, lactescent, as are the other species. 

 Stem upright, round. Leaves scattered, obovate, or wedge 

 shaped, slightly serrate at the end. Umbel of five rays, sup- 

 ported by a large involucre like the leaves. Rays branching, 

 first into three, then into two divisions. Capsules smooth. — 

 Annual. 



Euphorbia polygonifolia. L. Knot Grass Spurge. 



Leaves opposite, quite entire, lanceolate, obtuse; 

 flowers solitary, axillary; stems procumbent. L. 



A flat spreading plant, abounding with milky juice. Stems 

 smooth, dichotomous. Leaves opposite, oblong, linear-lanceo- 

 late, blunt, nearly sessile. Flowers small, proceeding from the 

 divisions of the stem. — In sandy places, near the sea shore. — 

 June, July. — Annual. 



Euphorbia maculata. L. Spotted Spurge. 



Leaves serrate, oblong, hairy ; flowers axillary, soli- 

 tary ; branches spreading. 



A flat plant like the last. Stems spreading close to the ground. 

 Leaves oblong, obtuse, obscurely serrulate on the upper part, 

 edged with hairs, and frequently with a dark spot in the centre. 

 Flowers very small, capsule hairy. — Found in sandy soils. — June, 

 July. — Annual. 



Euphorbia hypericifolia. Oval leafed Spurge. 



Smooth, branching, erect and spreading; branches. 



