EUPHORBIACE^E. (SPURGE FAMILY.) 405 



2. S. aquatica, n. sp. Shrubby ; stem single, erect from a fibrous spongy- 

 root, umbellately or alternately branched above, thickened near the base ; leaves 

 lanceolate, mostly acute, tapering at each end, short-petioled, sharply serrulate, 

 the uppermost yellowish ; stipules bristly ; spikes mostly shorter than the leaves, 

 terminal and in the forks of the stem ; glands peltate ; stamens 2 ; capsule 

 smooth; seeds globose, pitted, silvery-coated. Pine-barren ponds, Florida to 

 South Carolina. May - Sept. Stem 3 - 6 high. Leaves 2' - 4' long. 



3. S. ligUStrina, Michx. Shrubby; branches alternate, slender; leaves 

 pctioled, ovate-lanceolate or oblong-ovate, mostly obtuse, narrowed at the base, 

 entire ; stipules ovate ; spikes short, often by pairs, shorter than the leaves, lat- 

 eral and terminal ; stamens 3 ; capsule and oval seed smooth. River-swamps, 

 Florida to North Carolina, and westward. May -Aug. Shrub' 6- 12 high. 

 Branches spreading. Leaves l'-3' long. 



4. S. sebifera, Michx. Arborescent; leaves long-petioled, rhomboidal, 

 acuminate, entire ; spikes terminal, densely flowered ; sterile flowers pedicelled ; 

 calyx 4-toothed ; stamens 2 ; capsule roughish ; seeds white. Georgia and 

 South Carolina, near the coast ; introduced from China. June and July. A 

 tree 20 - 40 high. 



4. EXCCECARIA, L. 



Flowers monoecious or dioecious, apetalous. Sterile flowers in cylindrical 

 spikes, sessile. Calyx 3-parted. Stamens 2 - 4, partly monadelphous : anthers 

 pendulous. Fertile flowers few or solitary at the base of the sterile spike, sessile 

 or peduncled. Calyx 3-sepalous ; style 3-parted : stigmas entire, spreading. 

 Capsule of three 1-celled, 1 -seeded, 2-valved carpels. Shrubs or trees, with 

 milky juice, and alternate serrate or crenate leaves. 



1 E. lucida, Swartz. Smooth ; leaves coriaceous, pctioled, obpvate or 

 oblong, obtuse or emarginate, crenate ; fertile flowers solitary or by pairs, long- 

 peduncled, nodding ; capsule round-angled, smooth, like the ovoid seed. South 

 Florida. Tree 30 -40 high. Leaves !'-!' long. 



5. ACALYPHA, L. 



Flowers monoecious, apetalous, in axillary and terminal spikes. Staminate 

 flowers clustered, minutely bracted. Calyx 4-parted. Stamens 8-16, with the 

 filaments united at the base ; anthers pendulous. Pistillate flowers at the base 

 of the staminate ones, or on separate spikes, surrounded by a leafy toothed bract. 

 Calyx 3-parted. Styles 3, many-cleft. Capsule roundish, of three 1-celled, 

 1-seeded, 2-valved carpels. Herbs, with watery juice, and alternate serrate 

 leaves. 



* Staminate and pistillate flowers on the same spike. 



1 . A. Virginica, L. Annual, smoothish or hairy ; stem erect, branched ; 

 leaves thin, long-petioled, rhombic-ovate or oblong-ovate, acute, coarsely serrate 

 above the middle ; staminate spikes few-flowered, mostly shorter than the large 

 5 - 9-lobed bracts, with 1-3 pistillate flowers at the base ; capsule pubescent. - 



