408 EUPHORBIACE^. (SPURGE FAMILY.) 



barrens, Georgia and Florida. June - Sept. — Stem 6' -12' high. Leaves 

 I'-l^'long. 



* * * Styles 3, 2-cleft: stl(/mas 6 : petals of the sterile flowers longer than the calyx, 



of the fertile ones minute, subulate: stamens 8 : capsule 3-celled. 



5. C. glandulosum, L. Annual, rough with bristly hairs ; stem umbel- 

 lately branched ; leaves oblong, obtuse, coarsely sen-ate, mostly crowded at the 

 divisions of the stem and summit of the branches ; the slender petiole biglandu- 

 lar at the apex ; spikes small ; sterile flowers minute, wliite ; calyx 4-parted ; 

 petals 4 ; fertile flowers few, with the calyx 5-partcd — Dry waste places, Flor- 

 ida to North Carolina, and westward. July - Sept. — Stem 6' - 1 8' high. 



* * * * Styles 2, 2-parted : stigmas 4 : petals 5 in the sterile flowers, none in the 



fertile : stamens 5-10: capsule 1 - 2-celled. 



6. C. monanthogynum, Michx. Annual ; stem erect, twice or thrice 

 umbellately branched, tlie spreading forking branches, like the leaves and 

 racemes, stellate-tomentose ; leaves on slender petioles, ovate or oblong, entire, 

 obtuse, whitish beneath ; racemes in the forks of the brandies, few-flowered ; 

 the sterile flowers coiymbose ; the fertile (1-2) nodding. — Dry sterile soil, 

 South Florida to North Carolina. June - Sept. — Stem 1° high. Leaves 1' 

 long. 



8. CROTONOPSIS, Michx. 



Flowers monoecious, in terminal and axillary clusters. Calyx of the sterile 

 flowers 5-parted. Petals and stamens 5. Filaments separate, dilated upward. 

 Fertile flowers below the sterile. Calyx 3 - 5-parted. Petals none. Petal-like 

 glands 5, opposite the caly.x-lobes. Ovary 1 -celled, 1-ovuled. Stigmas 3, each 

 2-cleft. Fruit globose, indehiscent, 1-seeded. — A low and slender branching 

 annual. Leaves linear or lanceolate, short-petioled, entire, green and hairy 

 above, the lower surface, like the branches, covered witli silvery scales. Flowei-s 

 minute. 



1. C. linearis, Michx. — Dry sandy soil, Florida to North Carolina. 

 Aug. - Sept. — Stem 6'- 12' high, alternately branched or forking. Leaves 

 ^'-l' long, alternate or opposite. 



9. APHORA, Nutt. 



Flowers mona'cious, in axillai-y spikes. Sterile flowers few. Calyx 5-paited. 

 Corolla of 5 spatulate petals alternating with 5 flattened glands, as long as the 

 calyx. Stamens 10-12, in 2 whorls of 5-6 each, monadelphous below. Fer- 

 tile flowers like the sterile, but the petals shorter than the calyx. Style 3-parted, 

 the divisions 2-cleft. Capsule of three 1-celled, 1-seeded, 2-valved carpels. — 

 Shmbs, or herbs, with watery juice. 



1. A. Blodgettii, Torr. Branches smoothish ; leaves alternate, oval or 

 oblong, mostly acute, sharply serrulate, smooth, or sprinkled with simple ap- 

 pressed hairs, abruptly short-petioled ; sterile flowers 3-5, fertile mostly solitary ; 



