EUPHORBIACEAE. 81 



1. C. Ingallsii Small. Leaf -blades oblong to ovate-oblong, fleshy: involucre 

 between 1 mm. and 1.5 mm. long: capsules depressed: seeds broadly ovoid or 

 globose-ovoid, less than 2 mm. long. Coastal sand-dunes, U. S. keys. 



2. 0. Chiogenes Small. Leaf -blades oval, ovate or oblong, some of them sub- 

 orbicular: involucres about 1.5 mm. long; appendages mostly smaller than the 

 glands: capsules about 1.5 mm. wide: seeds about 1 mm. long, angled, the 

 faces uneven. Pinelands, L. keys. 



3. C. serpens (H.B.K.) Small. Branches glabrous: leaf -blades orbicular, 

 orbicular-ovate or oval: involucres barely 1 mm. long; appendages mostly 

 smaller than the glands: capsules between 1 and 2 mm. broad: seeds barely 

 1 mm. long, prominently angled. Damp sandy places, Key West. (Ant.) 



4. C. Grarberi Small. Branches canescent, stout, few: leaf -blades ovate or oval; 

 involucres about 1.5 mm. long; appendages minute or obsolete: capsules fully 

 1.5 mm. broad, pubescent: seeds about 1 mm. long, reddish-brown. Pinelands, 

 L. keys, L. S. keys. [E. K.] 



5. C. Serpyllum Small. Branches puberulent-canescent, filiform, very numer- 

 ous: leaf-blades deltoid or ovate-deltoid to triangular or triangular-ovate, 3-5 

 mm. long, obtuse: involucres about 1 mm. long; appendages very minute: 

 capsules about 1.5 mm. broad, pubescent: seeds less than 1 mm. long, yellowish 

 or grayish. Pinelands, Big Pine Key. 



6. C. buxifolia (Lam.) Small. Branches glabrous: leaf -blades ovate to broadly 

 oblong, or those of the lower leaves cuneate: involucres 1.5-2 mm. long, gla- 

 brous: gland-appendages whitish, mere margins or sometimes larger than the 

 glands: capsules 2.5-3 mm. broad, glabrous: seeds 1-1.5 mm. long, obscurely 

 angled. Coastal sand-dunes and hammocks, U. S. keys, U. keys, L. keys, L. S. 

 keys. [E. K.] (Ber., Bah., Cuba, Ant.) 



7. C. scoparia Small. Branches glabrous, pale: leaf -blades oblong-ovate, nar- 

 rowly ovate or ovate, 2-8 mm. long, obtuse or aeutish, pale or glaucescent 

 beneath: involucres about 1.5 mm. long, glabrous: gland-appendages white or 

 pink, 2 of them prominent and 2 usually obsolete: capsules 1.5-2 mm. broad, 

 glabrous: seeds about 1 mm. long, grayish, scabrous. Pinelands, Big Pine 

 Key. 



8. C. adicioides Small. Branches finely pubescent: leaf -blades ovate to oval: 

 involucres about 1 mm. long, pubescent; appendages obsolete, or mere uneven 

 margins along the glands: capsules about 1 mm. broad, pubescent: seeds not 

 seen. Hammocks and sand-dunes, L. keys. 



9. C. Blodgettii (Engelm.) Small. Branches glabrous or nearly so: leaf -blades 

 oval, oblong, or spatulate: involucres about 1 mm. long, glabrous: gland- 

 appendages white or pinkish, commonly slightly larger than the glands: cap- 

 sules fully 1.5 mm. broad, glabrous: seeds about 1 mm. long. Coastal sand- 

 dunes and low hammocks, U. keys, L. keys, L. S. keys. [E. K.] (Ber., Bah., 

 Cuba, Ant.} 



10. C. hypericifolia (L.) Small. Branches glabrous or nearly so, the ultimate 

 ones slender: leaf -blades mainly oblong, oblong-lanceolate, or ovate, unequally 

 serrate, usually nearly straight: involucres 1 mm. long or more: gland- 

 appendages obovate to reniform, rather conspicuous: capsules fully 2 mm. 

 wide, glabrous: seeds red or brown, about 1 mm. long. Pinelands and ham- 

 mocks, U. keys, L. keys. [E. K.] (Ber., Bah., Cuba, Ant.) 



11. C. brasiliensis (Lam.) Small. Branches glabrous, the ultimate ones fili- 

 form: leaf -blades resembling those of C. hypericifolia: involucres 1 mm. long 

 or less: gland-appendages mostly obovate, rather inconspicuous: capsules 

 usually less than 2 mm. wide: seeds gray, about 1 mm. long. Hammocks, pine- 

 lands and cultivated grounds, U. keys, L. keys. [E. K.] (Bah., Cuba, Ant.) 



Flora of Florida Keys 6. 



