400 EUPnoRBiACE.!:. (spurge family.) 



Synopsis. 



i 1. Ovulos and seeds Folitary in the cells. Flowers monnrlons. 

 • Flowers without floral envelope?, enclosed in a common cup-shaped involurrc. 



1. EUPIIOItBIA. Fertile flower solitary in the 4 - 5-toothud involucre. Sleiilu flowers sev- 



eral, c:ieh reduced to a single stamen. 



• • Flowers in bnicted spikes or racemes ; the upper ones sterile, the lowest fertile. 



*■ Flowers apetalous. 



t* Stigmas and cells of the capsule G - 7. 



2. IIIPPOMAXE. Carpels woody, indehisccnt. Spikes terminal. Staminato flowers clus- 



tered. 



++ <-f Stigmas and cells of the dehiscent capsule 3. 



3. STILLTNGIA. Calyx 2 - 3-toothed. Anthers erect. Staminate flowers clustered. 



4. EXC'tKCVIlIA. Calyx 3-parted. Anthers pendulous. Stjiniinate flowers single. 



5. ACAl.YPIIA. Stigmas many-parted. Flowers spiked. Lracts ol the pistillate flowers 



leafy, toothed. 



6. TRAGIA. Stigmas 3, simple. Flowers racemed. Bracts small, entire. 



f- -t- Staminate flowers (except No. 1 in Croton), or the pistillate also furnished with petals. 



7. Cr>OTO\. Pistillate flowers apetalous, or with minute petals Stamens C or more, distinct. 



8. Ci;OTO\OPSIS. Pistillate flowers apefcilous. Capsule 1 celled. Stamens 5, distinct. 



9. APIIO^JA. Pistillate and staminate flowers 5 petalled. Capsule 3-culleU. Stamens 10 



muaadelphous. 



• « • Flowers cymose or panicled, apetalous. 



10. CNIDOSCOLUS. Flowers cymose. Calyx white, corolla like. 



11. EICIXU3. Flowers in crowded panicles. Calyx herbaceous. 



J 2. Ovules, and commonly the seeds, 2 in the cells. 

 * Flowers mona'cious, apetalous. Ovary 3-ceIled. Ilerhs. 



12. PIIVLLANTIIUS. Flowers axillary. Calyx 6-6-parted. stamens 3. monodelphous. 



13. PACIIYSANDKA. Flowers spiked. Calyx 4-partcd. Stamens 4, distinct. 



» * Flowers dia-cious, apetalous. Ovary 2 celled. Shrubs. 



14. DUVPETES. Flowers in axillary clusters. Fruit drupaceous, 1 -celled, 1-seeded. 



1. EUPHORBIA, L. Spurge. 



Flowers moTia>piou<!, destitute of calyx and corolla ; tlic single jiistillatc, and 

 several inoiuiiuUous staminate ones included in a cup-shaped or toiJ-.-liapcd 4 - .")- 

 toothed involucre, •which has commonly thick and often colored glands between 

 the teeth. Styles 3, 2-clcft. Capsule exscrted, 3-cclled : carpels 2 valvcd, 

 1-sccdcd. — A polymorphous genus of plants with acrid milky juice. 



^ 1 . Leaves without stipules. 

 • Stem erect, umliellatehj branched aliove : involucres solitarij, termhutl and tn the 

 forks of the branches: leaves of the stem alternate, those of the branches opposite or 

 wliorkd. 

 *- Glamh of ihc iitrolurre 5, tvilh white pftal-like appendages : leaves entire: peren- 

 nials. 

 1. E. COrollata, T-i. Stem smooth or pubescent ; brandies 4 - fi. twice or 

 thrice forking, mostly short and fastigiatc ; leaves thick, oblong or oval, obtu.sc, 

 pale and mostly hsiiry beneath ; involucres pcdicelled ; apjiendages of the (green) 



