Obder 112.— EtrPHORBIACE^. 631 



( Plants downy. JFartilo coljrx 5-partcd, with 2 styles, pendulous No. 1 



S Plants hairy or scaly, fertile calyx 5-parted, with 8 styles, each 3 or 8-cleft Nos. 2 — 4 



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



1 C. monanthogynum 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. — (D Prairies, Pike Co., 111. (Holton) and 

 south-westward. Herb near If high, Ivs. 1' long. Fls. very small, jn. — 

 Sept. 



2 C glandulosum L. Mspid, gkmdular, 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, octandroua. — (D In fields and 

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



1 to 2' long. Sd. light aah-oolored. Jn. — Sept. 



3 C. argyrduthemum Mx. Clothed with glandular scales, branched at base ; lvs. 

 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. — % Sandy soils, G-a. 

 (Wayne Co., Dr. Town) and Pla. (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 maritimura "Walt. Ilalf shrubby, diffusely and trichotomously branched, 

 branches clothed with a stellular tomentum ; lvs. broadly oval, obtv^e, 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, to- 

 mentous. — U DriiUng 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 ; fe. 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-clefi cal/yx ; stamens 10 to 

 12. — Dry barrens of III. 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, lvs. oblong-lanceolato, rounded or sub- 

 cordate at base, acute, entire, lower petioles elongated ; spilces 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, S 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, lvs. 



2 to 3' long. 9 Fls. a mass of fusty wool, 5" broad. 



8. CROTONOP'SIS, Mx, (Named for its resemblance {uipig) to the 

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



S calyx 6-partcd ; corolla of 5 petals; stamens 5, distinct ;$ calyx 5- 

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

 bifid ; ovary simple ; capsule 1-celIcd, 1-seeded, indehilcent. — (p Herb 

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

 sterile. * 



C. linearis Mx. — Sandy swamps, N. J. to Fla., La. and 111. (Lapham). Sts. as 

 slender as tho 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 

 lvs. Fr. oval, acute, muricate glandular. Jn. — Sept. 



9. PHYLLAN'THUS, L. (Gr. fvXXov, dvdog ; the leaves of the ori- 

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



