ORDEK 113. EUPHORBIACE.E. k 297 



I A. Carollniana Walt. Lvs. ovate, cordate, closely and strongly serrate ; a spikeg 

 axillary, $ terminal, fruit soft-echmate, bracts with linear lobes. W. and S. 



6. MERCURIALIS, Tourn. Fls. 8 , apetalous, axillary, in bractlesa 

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

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



RI. aiiuiia Willd. Lvs. lanceolate, &c., thrice longer than the stalks ; branches oppo- 

 site ; t spikes long, interrupted, seeds oval, pitted. Waysides, 8. : rare. 



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

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

 ments. 9 Style short, stigmas 3, 2-parted, plumous, colored. Capsule 

 echinate, 3-lobecl, 3-celled, 3-seeded. Herbs or shrubs. 



1C. COMMUNIS L. A stout (D herb with peltate, palmi-lobed leaves, 4 12', 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. 



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

 mostly minute, often (especially in the $) wanting. $ Disk with 4 6 

 lobes. Sta. 5 or more, anthers inflexed in the bud. $ Ovary 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. moiiaiithofij'ims MX. Stellate-downy, di- and tri-chotomonsly branched ; Ivs. 



ovate or subcordate. silvery beneath , n>. in the forks, (i) Prairies, 111., and S. If. 



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



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

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



3 . 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. 2f 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 1820. Drifting sands, sea-coast, S. 2 3f. July Oct. 



5 C. capltatus MX. Lvs. ovate to oblong, long-petioled, obtuse ; $ cal. large (7"), 



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



6 C. Ivlliottii Chapmu. Lvs. lance-oblong, short-petiolate, acutish ; 9 cal. &" diam., 



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



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

 $ Petals 5, spatulate. Sta. 5, distinct. 2 Petals 0, 5 scales instead. Stig. 



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

 with small, alternate leaves. Upper flowers sterile. 



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

 peatedly trifid and forked, 1 2f. Leaves linear-oblong, 6 10". June Sept. 



10. PHYLLANTHUS, L. Flowers 8 , axillary. Calyx in f> 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. Carollueiisis Walt. St. slender, with alternate branches ; Ivs. oval, 610", the 

 raininl much smaller ; flowers snbsolitary. Pa. to HI., and S. 6 18'. June AUK 



