58 



EUPHOEBIACEAE. 



Monoecious or rarely dioecious : ovary 3-celled : fruit 



capsular or baccate. 

 Androecium and gynoecium surrounded by a disk 



at the base. 



Anthers opening horizontally : fruits capsular. 

 Anthers opening vertically : fruits baccate. 

 Androecium and gynoecium not surrounded by a 



disk at the base. 



Dioecious : ovary 1-2-celled : fruit drupaceous. 

 Ovules and seeds solitary in each cavity. 



Flowers either staminate or pistillate or both in more 

 or less elongated spikes or racemes (pistillate 

 basal). 

 Corolla present in either staminate or pistillate 



flowers or in both. 

 Stamens 5-6 : filaments distinct. 

 Stamens 10 : filaments monadelphous. 

 Styles 2-cleft : petals distinct. 

 Styles several-cleft : petals united at the base. 

 Corolla wanting. 



Pistillate flowers and capsules pedicelled. 

 Pistillate flowers and capsules sessile. 

 Receptacle with a central column. 

 Fruit dry : seeds with caruncles. 

 Fruit fleshy : seeds without caruncles. 

 Receptacle with 3 lateral horns. 

 Flowers either staminate or pistillate, or both, in 



cymes, or corymbs. 

 Leaf-blades peltate. 

 Leaf-blades not peltate. 



Flowers in forking cyme-like panicles. 

 Flowers in simple or branched racemes. 

 Flowers in involucres : calyx represented by a scale. 



Involucre regular or nearly so, nearly or quite equilateral. 

 Involucre irregular, very oblique. 



2. XYLOPHYLLA. 



3. CICCA. 



4. BREYKIA. 



5. DRYPETES. 



6. CHOTON. 



7. GYMNANTHES. 



8. SEBASTIAXA. 



9. SAPIUM. 

 10. STILLINGIA. 



11. RICINUS. 



12. JATROPHA. 



13. MANIHOT. 



14. CHAMAESYCE. 



15. PEDILAXTHUS. 



1. SAVIA Willd. Shrubs or trees. Leaves alternate : blades thick, entire. 

 Flowers dioecious; the staminate densely clustered, with 5 broad rounded sepals 

 and 5 thin petals broadened upward: stamens 5, exserted. Pistillate flowers 

 solitary or few together, with 5 broad sepals and 5 nearly similar petals : ovary 

 3-lobed; styles 2-parted. Capsule depressed. 



1. S. bahamensis Britton. Shrub or small tree, the bark pale-gray or whitish: 

 leaf-blades typically obovate, varying to narrowly obovate or oval-obovate, 2-5 

 cm. long, rounded at the apex, or rarely retuse or acutish, pale-green, shining 

 above, glabrous, short-petioled : staminate flowers with orbicular-ovate sepals 

 about 2 mm. long and cuneate or flabellate thin petals shorter than the sepals: 

 pistillate flowers with suborbicular sepals and petals about 2 mm. long: cap- 

 sules spheroidal, 5-6 mm. long: seeds 4-5 mm, long. SAVIA. 

 Hammocks and palmlands, lower F. Keys. (W. I.) 



2. XYLOPHYLLA L. Shrubs or small trees, with flattened leaf-like, 

 usually distichous, branehlets. Leaves minute or obsolete. Flowers borne in 

 clusters along the margins of the leaf -like branchlets. Staminate flowers mostly 

 with 6 sepals and 3 stamens. Pistillate flowers mostly with 6 sepals and a 

 3-celled ovary. Fruit capsular. 



1. X. Epiphyllanthus (L.) Britton. Shrub 1-2 m. tall: flattened branches 

 almost linear, varying to somewhat spatulate or lanceolate, commonly 4-10 cm. 

 long: larger sepals of the staminate flowers 11.5 mm. long: capsules 45 mm. 

 broad. 



Hammocks and sandy places Key West. (W. I.) Not recently collected. 



3. CICCA L. Shrubs or trees. Leaf-blades entire. Flowers similar to 

 those of Phyllanthus, but with vertically opening anther-sacs. Fruit baccate.' 



