OSDEB 112.EUPHOEBIACE^E. 631 



| Plants downy. Fertile calyx 5-parted, with 2 styles, pendulous ....................... No. 1 



Plants hairy or scaly. Fertile calyx 5-parted, with 8 styles, each 2 or 3-cleft ........ Nos. 2 i 



Plants densely woolly. Fertile calyx 8-parted. Styles 3, each twice 2-cleft .......... Nos. 5, 6 



1 C. monanthogymam MX. Stellately pubescent, tri- and dichotomously 

 branched, slender ; Ivs. on slender petioles, ovato and ovate-oblong, broad and 

 sometimes subcordate at base, mucronulate, entire, silvery beneath ; fls. in tho 

 forks, the sterile 2 or 3 in a little erect, stalked head ; the fertile mostly solitary 

 in the same axil, recurved; fr. 2 -seeded. CD Prairies, Pike Co., 111. (Holton) and 

 south-westward. Herb near If high, Ivs. 1' long. Fls. very smalL Jn. 

 Sept. 



2 C. glandulosum L. Hispid, glandular, tri- (or 4)-chotomously branched ; Ivs. 

 clustered at the forks, petiolate, lance-oblong or linear-oblong, serrate, bearing 2 

 cup-shaped glands at base ; fls. in small clusters, sessile in the forks and terminal, 

 the fertile at the base, 5-parted, the sterile 4-parted, octandrous. CD In fields and 

 waste grounds, 111. to Va., Ga. and La. A straggling herb 1 to 3f high. Lvs. 



1 to 2' long. Sd. light ash-colored. Jn. Sept. 



3 C. argy ran the mum MX. Clothed ^v^th glandular scales, branched at base ; Ivs. 

 oval or oblong, tapering to a petiole, obtuse, entire, silvery beneath ; fls. in a 

 capitate, terminal spike, silvery whitish all over, fertile at base, 5-parted. with 3 

 styles, each 3-cleft at top; sterile 5-parted, octandrous. l Sandy soils, Ga. 

 (Wayne Co., Dr.- Town) and Fla, (Tallahassee!). Sts. 9 to 18' high, simple, often 

 clustered. Lvs. 1' to 18" long, half to a third as wide. Scales stellate, with a 

 central gland. Fls. short-pediceled. Apr. Jn. 



4 C. maiitinmm Walt. Half shrubby, diffusely and trichotomously branched, 

 branches clothed with a stellular tomentum ; Ivs. broadly oval, obtuse, entire, sub- 

 cordate, pale above, silvery beneath, petiolato ; fls. in dense spikes, terminal and 

 -in the forks, tho sterile many, the fertile commonly 2 at the base ; caps, to- 

 mentous. 2 Drifting sands along the seacoast, S. Car. to Fla. and Tex. (Engel- 

 man). Sts. straggling and spreading 2 to 3f. Lvs. shining with a silvery scurf, 

 not hairy beneath, nearly as broad as long. 



5 C. capitatum MX. Annual, woolly or tomentous, hoary, branched ; Ivs. long- 

 petioled, oval-oblong, obtuse, entire, rounded at base ; fls. in terminal, capitate clus- 

 ters, tho fertile at the base, with a large (8" diam.) 8-deft calyx ; stamens 10 to 

 12. Dry barrens of 111. to La, Also in N. J. (Kniskern in Gray's Manual). 

 Herb 1 to 2f high. Lvs. 18" to 2' long, often rather lanceolate and acutish, 

 scarcely longer than, their petioles. Seeds polished, cinerous-brown, mottled. Jn. 

 Sept. 



6 C. Liiicilieimeri Eng. & Gray. Shrubby, erect, trichotomously branched, 

 clothed with a dense, hoary tomentum, Ivs. oblong-lanceolate, rounded or sub- 

 cordate at base, acute, entire, lower petioles elongated ; spikes terminal and in tho 

 forks, mixed or separate, sterile fls. many, sessile, fertile larger, 2 or 3 at the baso 

 or alone ; cal. very woolly, $ 7 or 8-parted ; styles 3, twico or thrica forked, 

 red ; ova. very villous. Sands, near the coast, La,, Tex. Shrub 2 to 4f high, Ivs. 



2 to 3' long. $ Fls. a mass of rusty wool, 5" broad. 



8. CROTONOP'SIS, MX. (Named for its resemblance (fyi$) to the 

 genus Croton.) Flowers 8 , minute, in terminal and axillary spikes; 



$ ealyx 5-parted ; corolla of 5 petals ; stamens 5, distinct ; ? calyx 5- 

 parted ; corolla none ; stamens 5 rudimentary scales ; stigmas 3, each 

 bifid ; ovary simple ; capsule 1-celled, 1-seeded, indehiscent. (D Herb 

 slender, branching, silvery-scurfy, with small, alternate Ivs. Upper fls. 

 sterile. 



C. linearis MX. Sandy swamps, K J. to Fla., La. and 111. (Lapham). Sts. as 

 slender as the flax, at length repeatedly forked, 1 to 2f high, clothed with rusty 

 glands in shining scales, as well as the small (6 to 10" long), linear-oblong, acuto 

 Ivs. Fr. oval, acute, muricate glandular. Jn. Sept. 



9. PHYLLANTHUS, L. (Gr. $vMov, dvdog ; the leaves of the ori- 



ginal species are apparently floriferous.) Flowers 8 . $ Calyx per- 



