ORDER 112. EUPHORBIACE^E. 631 



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



Plants hairy "or scaly. Fertile calyx 5-parted, with 3 styles, each 2 or 3-cleft ........ Nos. 2 4 



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



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

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

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

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

 in the same axil, recurved ; fr. 2 -seeded. () Prairies, Pike Co., Ill (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. GD 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 with glandular scales, branched at base ; Ivs. 

 oval or oblong, tapering to a petiole, obtuse, entire, silvery beneath; fl-s. in a 

 capitate, terminal spike, silvery v:hitish all over, fertile at baso, 5-parted, with 3 

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

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

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

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



4 C. maritimum ^Valt. Half shrubby, diffusely and trichotomously branched. 

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

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

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

 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, the fertile at the base, with a large (8" diam.} 8-ckft calyx ; stamens 10 to 

 12. Dry barrens of I1L 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. Lindheimeri 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 the 

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

 or alone ; cal. very woolly, $ 7 or 8-parted ; styles 3, twice or thrice 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. (Xamcd for its resemblance (<ty*c) to the 

 genus Croton.) Flowers 3 , minute, in terminal and axillary spikes; 

 o calyx 5-parte<l ; 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. CD Herb 

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

 .sterile. 



C. linearis MX. Sandy swamps, IST. J. to Fla., La. and 111. (Lapham). St.-. a* 

 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, acute 

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



9. PHYLLANTHUS, L, (Gr. QV/JMV, dvdog ; the leaves of the ori- 

 ginal species are apparently floriferous.) Flowers " . : Calyx per- 



