290 72. euphorbiacejE. 



3. Mercurialis. F1. dioecious or monCEcious. Perianth 

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

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



1 . BuxTJS Linn. Box. 



1. B. sempervirens (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 

 tvith purple, glaucous. Inv.-glands rounded. — Loose sand. 

 Southern sea-coast. A. VIL — 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 {Yioch) ; 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. £. 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. 7 — 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, shghtly 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 

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

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



