648 EUPIIORBIACE-E. 



TRAGIA, Plum. 



T. macrocarpa, Willd. Hirsute; stem twining (2° -4° long) ; leaves 

 ample, thin, cordate, coarsely and sharply serrate, long-petioled ; racemes 



shorter than the leaves ; capsule large. — Alabama, Tennessee, and westward. 



CROTON, L. 



C. Texensis, Midler. Annual, diiceious, stellatc-tomentose ; stem di- 

 chotomous (l°-2° high); leaves lanceolate, short-petioled ; sterile racemes 

 short; petals none; fertile flowers axillary, solitary ; stigmas 18-24 ; capsule 

 nearly globose, covered with tufts of deciduous down; seed biconvex. — 

 Alabama [Mohr), and westward. 



C. capitatUS, Michx. Annual, monoecious, woolly ; stem umbellately 

 branched ; leaves long-petioled, lance-oblong, rounded at the base ; sterile 

 flowers numerous, the petals fimbriate ; fertile flowers crowded ; calyx 7 - 10- 

 parted, with the lobes obtuse; seed smooth. — Georgia, along railroads, and 

 westward. -T- Stem 2° -4° high. 



C. humilis, L. Low (1° high), shrubby, stellate-tomentose; leaves long- 

 petioled, cordate-ovate, acuminate; racemes densely 10-15-flowered; calyx 

 woolly, 5-parted; petals of the sterile flower oblong; stamens 20-.'!O; petals 

 of the fertile flower narrow-linear; styles twice 2-parted; capsule downy. 

 (C. Berlandieri, Torr.) — Florida (Cabanis). 



C. linearis, Jacq. Shrubby, canescent-tomentose, monoecious or dioe- 

 cious; stem slender, branching (3°-4° high); leaves short-petioled, linear- 

 lanceolate, obtuse ; sterile racemes Blender, longer than the leaves, minutely 

 many-flowered, the fertile ones short, few-flowered ; styles 2-parted ; capsule 

 roundish. — Miami, South Florida (Garber). 



C. Alabamensis, E. A. Smith (ined.). Stem tall, woody, much 

 branched ; leaves thin, short-petioled, oblong-lanceolate, mostly obtuse, 

 smooth or nearly so above, the lower surface, like the branchlcts and ra- 

 cemes, coated with silvery scales; racemes often unisexual, few- or many- 

 flowered; calyx-lobes 5, acute ' petals of both sexes scarcely shorter than 

 the calyx, woolly-margined ; stamens 20 or more; styles simple, truncate or 

 emarginate; capsule much longer than the calyx ; seeds glabrous. — Central 

 Alabama, flowering throughout the year. — Stem G°-10° high. Leaves 2' -3' 

 long. 



C. Betulinus, Vahl. Stellate-tomentose ; stem low (1°-1£° high), with 

 -lender branches ; leaves small (1' or less long), triangular-ovate, truncate 

 at the base, coarsely toothed, rough above, twice as long as the petiole ; 



racemes bisexual ; Btamena 10- 11 ; styles twice 2-cleft; capsule subglobose. 



— Rocky pine woods, South Florida (Curtiss), 



JATROPHA, L. 



Flowers monoecious. Sepals 5, mostly united, Petals 5, or none. (Hands 

 of the disk 6, opposite the calyx-lobes. Stamens monadelphous. styles:'. 



