290 72. EUPHORBIACE^5. 



3. MERCURIALIS. Fl. dioecious or monoecious. Perianth 

 3-parted. Male. Stam. 9 16. Fern. Style short, forked. 

 Caps. 2-celled. Cells 1 -seeded, bursting at the back. 



1. Buxus Linn. Box. 



1. B. sempercirens (L.) ; 1. ovate-oblong coriaceous shining 

 above, petioles ciliated, anth. ovate-sagittate. E. B. 1341. A 

 small bushy tree of 10 12 feet in height. Dry chalky hills, 

 rare. T. IV. VI. E. 



2. EUPHORBIA Linn. Spurge. 

 A. Leaves with stipules. Heads axillary. 



1. E. Peplis (L.) ; st. procumbent forked, heads solitary, caps, 

 keeled, seeds smooth, 1. opposite stalked half-oblong-heartshaped 

 nearly entire glabrous. E. B. 2002. St. usually much tinged 

 with 'purple, glaucous. Inv. -glands rounded. Loose sand. 

 Southern sea-coast. A. VII. IX. E. I. 



B. Stipules wanting. 

 * Involucral glands roundish or transversely oval. 



2. E. Helioscopia (L.) ; umbel 5-fid then 3-fid and 2-fid, bracts 

 and 1. membranous obovate-wedgeshaped serrate upwards, caps, 

 smooth glabrous, seeds netted rugose. E. B. 883. Waste and 

 cultivated ground. A. VI. IX. Sun Spurge. 



3. E. stricta (Koch) ; umbel twice 3 5-fid then bifid, general 

 and first partial bracts and 1. oblong clasping, other bracts broadly 

 cordate blunt with a minute apiculus, inv. -glands oval, stam. 

 rarely more than 2 in each inv., caps, with prominent cylindrical 

 tubercles, seeds smooth oval brown and shining, seed-stalk cor- 

 date. St. erect, 2 3 ft. high, much branched. Umbel mode- 

 rate. Inv., caps., and seeds small. Limestone woods. Glou- 

 cestershire and Monmouthshire. P. ? VII. VIII. E. 



4. E.platyphylla(Koch}', umbel 3 5-fid then repeatedly bifid, 

 1. and general bracts long-obovate with a cordate base, partial 

 bracts all cordate apiculate, stam. 1 8 in each inv., inv. -glands 

 oval, caps, with shortly conical tubercles, seeds obovate brown 

 and shining, seed-stalk nearly reniform. E. stricta Sm., E. B. 

 333 (starved). Plant more diffuse than, and quite distinct from, 

 the preceding, erect, slightly branched. Inv., caps., and seeds 

 twice as large. Fields. A. VI. VIII. E. 



5. E. hiberna (L.); umbel about 5-fid, bracts and 1. ovate or 

 elliptical entire blunt, inv.-glands reniform, caps, warted gla- 

 brous, seeds obovate smooth somewhat shining brownish. E. B. 



