EUPHORBIACEAE. 61 



Spikes yellow ; glands smaller than the bracts : seeds coarsely reticulate. 



1. 8. aquatica. 

 Spikes red ; glands as large as the bracts or larger : seeds finely 



reticulate. 2. S. tenuis. 



1. S. aquatica Chapm. Plants 6-2.0 dm. tall, with stout stems or branches: 

 blades of the upper leaves linear to linear-oblong, serrulate : spikes stout, mainly 

 yellow: capsules about 10 mm. wide. 



Swamps and wet pinelands, n. Fla. and the upper pen. (Cont.) 



2. S. tenuis Small. Plants 3-12 dm. tall, with slender stems not umbellately 

 branched at the top: blades of the upper leaves narrowly linear, crenulate: 

 spikes slender, mainly red: capsules about 7 mm. wide. 



Everglades about the E. Keys. (Endemic.) 



11. EICINUS [Tourn.] L. Herbs, shrubs or trees. Leaf-blades peltate, 

 palmately lobed. Flowers monoecious, apetalous. Staminate flowers with 3-5 

 sepals and numerous stamens. Pistillate flowers with caducous sepals and a 

 3-celled ovary. Fruit a capsule. 



1. R. communis L. Small tree or shrub, 1-5 m. tall, the stem widely branched : 

 leaf -blades nearly orbicular, 6-11-lobed: capsules 12-16 mm. in diameter. 

 CASTOR-OIL PLANT. PALMA-CHRISTI. 



Waste places, fields, and hammocks, nearly throughout Fla. (Cont., W. I.) 



12. JATBOPHA L. Partially woody plants or herbs. Leaf -blades angled 

 or lobed. Flowers monoecious, petaliferous. Staminate flowers with 5 sepals, 

 5 small petals, and 10 stamens. Pistillate flowers with a mainly 2-3-celled 

 ovary. Fruit a capsule. 



Leaf-blades 3-5-lobed ; lobes toothed, glandular-ciliate : inflorescence pubescent. 



1. J. gossypiifolia. 



Leaf-blades 9-11-lobed ; lobes incised, eciliate : inflorescence gla- 

 brous. 2. J. multiflda. 



1. J. gossypiifolia L. Shrub 5-11 dm. tall: leaf -blades palmately 3-5-lobed, 

 8-15 cm. wide, the lobes broad, shallowly toothed and glandular-eiliate : 

 cymules paniculate: petals scarcely twice as long as the sepals: capsules 

 globular-oblong, about 1 cm. long, slightly warty: seeds 7-8 mm. long. 



Roadsides and cultivated grounds, Key West. Nat. of the tropics. (W. I.) 



2. J. multifida L. Shrub 9-20 dm. tall: leaf -blades palmately 9-11-lobed, 

 mostly 10-20 cm. wide, the lobes narrow, entire or incised, not eiliate: cymules 

 corymbose: petals thrice as long as the sepals: capsules globose-obovoid, 2.5-3 

 cm. long, smooth: seeds 18-25 mm. long. 



Pinelands, E. Keys. Nat. of Trop. Am. (W. I.) 



13. MANIHOT Adans. Shrubs or herbs. Leaf -blades entire, or palmately 

 lobed or parted. Flowers monoecious, apetalous. Staminate flowers with 5 

 sepals and 10 stamens. Pistillate flowers often smaller than the staminate, 

 with a 3-celled ovary. Fruit a capsule. 



1. M. Manihot (L.) Karst. Plants 9-16 dm. tall: leaf-blades 3-7-parted: cap- 

 sules with crenate-undulate wings. CASSAVA. 



Cultivated grounds and pinelands, E. Keys and F. Keys. Nat. of S. Am. (W. I.) 



14. CHAMAESYCE S. F. Gray. Annual or perennial herbs or shrubs. 

 Leaves opposite: blades oblique at the base. Involucres axillary or in axillary 

 cymes, each with 4 naked or appendaged glands, one sinus being glandless. 

 Capsules smooth, sometimes pubescent. Seeds smooth or transverse- wrinkled. 



SPURGE. 



