ORDER 113. EUPHORBIACE.E. 297 



2 A. Carollniana Walt. Lvs. ovate, cordate, closely and strongly serrate ; 4 spikes 

 axillary, ? terminal, fruit soft-echinate, bracts with linear lobes. W. and S. 



6. MERCURIALIS, Toura. Fls. 8 , apetalous, axillary, in bractless 

 spikes or fascicles. Calyx 3-parted. Sta. 10 20, anth. 2-celled, extrorse. 

 Fruit 2-carpelled, 2-seecled. Herbs with opposite, petiolate leaves. 



M. a mi ua Willd. Lvs. lanceolate, &c., thrice longer than the stalks ; branches oppo- 

 site ; t spikes long, interrupted, seeds oval, pitted. Waysides, S. : rare. 



7. RICINUS, Tourn. CASTOR OIL PLANT. Fls. 8 , apetalous. Calyx 

 3-5-parted, valvate in the bud. $ Sta. oo, with irregularly united fila- 

 ments. ? Style short, stigmas 3, 2-parted, plumous, colored. Capsule 

 echinate, 3-lobeu, 3-celled, 3-seeded. Kerbs or shrubs. 



R. COMMUNIS L. A stout herb with peltate, palmijobed leaves, 412', divided into 

 lance-shaped lobes. Southward it becomes a shrub, or tree 10 20f. Cult, for its seeds, 

 yielding the castor oil, or for the ornament of its splendid foliage. E. India. 



8. CROTON, L. Fls. 8 . Calyx 4-8-parted. Petals hypogynous, 48, 

 mostly minute, often (especially in the $ ) wanting. $ Disk with 4 Q 

 lobes. Sta. 5 or more, anthers inflexed in the bud. ? Ovaiy 3-celled, 

 styles 3, 1-3-times forked, Fruit 3-carpelled, 3-seeded. Plants glandular, 

 clothed with scurf or stellate hairs. Leaves alternate. 



Downy. Fertile calyx 5-parted, with 2 styles, and pendulous No. 1 



Hairy or scaly. Fertile calyx 5-parted, with 3 styles, each 2- or 3-cleft Nos. 2 4 



Densely woolly. Fertile calyx 8-parted. Styles 3, each twice 2-cleft Nos. 5, 6 



1 C. monanthogynus MX. Stellate-downy, di- and tri-chotomously branched ; Ivs. 



ovate or subcordate, silvery beneath ; fls. in the forks, (I) Prairie?, 111., and S. If. 



2 C. glandulosus L. Hispid, tri-(or 4-)chotomously branched ; Ivs. clustered at the 



forks, lance- to linear-oblong, serrate, with 2 concave glands at base ; fls. in clusters, 

 the sterile 4-parted, 8-androus. (T) A straggling weed, W. and S. 1 2f. 



3 C. argyranthemus MX. Clothed with silvery glandular scales, branched at base ; 



Ivs. oval to oblong ; fls. in a hd. or spike, silvery all over, all 5-parted. 11 Ga., Fla. If. 



4 C. maritimus Walt. Half-shrubby, bushy, trichotomously branched, tomentous; 



Ivs. broad-oval, silvery beneath ; flowers in dense heads on long stalks ; etam. aoout 

 10 ; stigmas 1& 20. Drifting sands, sea-coast, S. 2 3f. July Oct. 



5 C. c a pit At us MX. Lvs. ovate to oblong, long-petioled, obtuse ; 9 cal. large (7"), 



7-8-cleft ; styles 3, each 4-parted to base ; seed double-convex. W. and S. 



6 C. Elliottii Chapmn. Lvs. lance-oblong, short-petiolate, acutish ; $ cal. 6" diam., 



5-8-cleft ; styles 3, each 4-cleft to the middle ; seeds plano-convex. S. 2 3f. 



9. CROTONOPSIS, MX. Fls. 8 , minute, in spikes. Calyx 5-parted. 

 $ Petals 5, spatulate. Sta, 5, distinct. ? Petals 0, 5 scales instead. Stig. 



3, each bifid. Ovary and pod 1-celled, 1-seeded. Slender, silvery-scurfy, 

 with small, alternate leaves. Upper flowers sterile. 



C. linearls MX. Sandy swamps, N. J. to 111., and S. Stems as slender as Flax, re- 

 peatedly trifid and forked, 1 2f. Leaves linear-oblong, & 10". June Sept. 



10. PHYLLANTHUS, L. Flowers 8 , axillary. Calyx in 5 or 6 seg- 

 ments. Petals 0. Stam. 3, very short. Styles 3, bifid. Ovuies and seeds 

 2 in each 2-valved carpel. Leaves alternate, in 2 ranks. 



P. Caroliiieiisls Walt. St. slender, with alternate branches ; Ivs. oval, 610", the 

 ramial much smaller ; flowers subsoli tary. Pa. to HI., and S. 6 18'. June Aug 



