CROTONS OF THE UNITED STATES. 59 
Havard, 1883, no. 32, “on T. P. R. R.”, a very large-leaved form 
with an unusually developed raceme of only pistillate flowers, 12 cm. 
long, pedicels 4 to 6 cm. long, but not reflexed); New Mexico (Roth- 
rock, no. 506; Rusby, no. 375; Vasey, no. 452, 1881; Mearns, no. 152; 
Mulford, nos. 616, 761, 948; Wright, no. 1805); Arizona (Rothrock, 
1874; Pringle, 1884; Lemmon, no. 461; Palmer, no. 242; Wilcox, no. 276; 
McDougal, no. 793; Schott and Parry, 1852); Mexico (Palmer, no. 1245, 
in Coahuila; Hartman, no. 806, in Chihuahua; Thurber, no. 337, in Sonora 
and no. 706, in Chihuahua, “ Common on sandy plains from Gila to Rio 
Grande’’). 
C. LinpHEIMERIANUS Scheele, in Linnaea 25: 580. 1852; 
Coulter, Bot. West. Texas 399. 1894; Small, in Brit- 
ton and Brown, Ill. Fl. U.S. and Can. 3:518. f. 
2292a. 1898. C. ellipticus Muell. Arg. in DC. Prod. 
15?2:688. 1866. C. eutrigynus A. Gray, Man. Bot. 
438. 1867. Oxydectes elliptica Kuntze, Rev. Gen. Pl. 
611. 1891. 
Annual, 3 to 5 dm. high, 2- to 4-chotomous, appressed 
pubescent throughout, greenish, incanous only on younger 
branchlets; leaves oval or rhomboid-elliptical, 1 to 3 cm. 
long, somewhat oblong above, apex shortly rounded, some- 
times retuse, base truncate or cordate, entire or undulate, 
cinereous below; petioles about as long as the leaves; stam- 
inate flowers in short few-flowered racemes; pedicels 3 to 
4mm. long; bracts setaceous; sepals generally ovate; pe- 
tals 5, clavate, densely ciliate; glands thin; stamens 7 to 12, 
the filaments nearly smooth; receptacle pilose; pistillate 
flowers solitary or in twos or threes from the base of the 
raceme, apparently from the forks as in C’. monanthogynus, 
very rarely racemose as in C’. corymulosus, long pedicelled, 
5 to 15 mm. at maturity, becoming pendent; sepals 5, sub- 
equal, concave, obovate or lanceolate ; petals none or only 
rudiments; glandular disc thin, lobed; styles 3, biparted, 
about 3 mm. long; capsule oval or cylindrical, 4 to 5 mm. 
long, truncate or obtuse at both ends, 3-celled and gen- 
erally containing 3 oblong, punctulate seeds ; caruncle large, 
stipitate; calyx lobes more or less accrescent, becoming 
