56 MISSOURI BOTANICAL GARDEN. 
but intermediate forms have not been observed. — South- 
west Texas and northward. 
Specimens examined from Texas (Havard, nos. 4 and 5; Heller, no. 
1800; Wooton, no. 227; Pringle, no, 2073; Ferguson, several collections 
in 1899); Indian Territory (Ward. no. 11, in part). 
C. MUELLERI Coulter, Bot. West. Texas 399. 1894. C. Berlandieri Muell. 
Arg. in Linnaea 84: 141. 1865; DC. Prodr. 15%: 688. 1866. Heptal- 
lon aromaticum Rafinesque, Neogenyton 1. 1860. Ex Muell. Arg. 
Perennial (?), 8 to 12 dm. high, the entire plant covered with a very 
fine stellate tomentum; leaves ovate to lanceolate, entire, &’Acuminate; base 
obtuse, 3 to 6 cm. long, 8 to 15 mm. broad; tomentum appressed, fine; 
petioles 1 to 2 cm. long; stipules about 3 mm. long; racemes oblong, 2 
to 3 cm. long, not capitate, tomentose but not loose woolly; staminate 
flowers small, short pedicelled; sepals ovate; petals ovate and ciliate at 
their base; stamens about 10, the filaments and receptacle pilose; pistil- 
late flowers subsessile or short pedicelled; calyx unequally 6- to 7-parted; 
petals none; gland disc-shaped but very unequally lobed; styles 3, twice 
bicleft or palmately 4-cleft, about 2 mm. long; capsule globose, slightly 
depressed at the apex, trisulcate, about 4 mm. tall; seeds oval, about 3.5 
mm. long. — Found in Mexico near the border and possibly occurs in our 
territory. — Specimens examined collected by Berlandier, nos. 861, 2281, 
Llano de Santa Teresa, Matamoros to San Fernando, 1830. — Plate 20. 
C. Ex.iorrm Chapman, Fl. South. U. S. 407. 1860; 
Muell. Arg. in DC, Prod. 157: 688. 1866. C. ellipticum 
Elliott, Sketch Bot. S. C. and Ga. 2: 648. 1824. 
Ex Chapman. — Not Nuttall, which is CO. monantho- 
gynus Michx. 
Annual, slender, probably 4 to 8 dm. high, stem scabrous 
below, short appressed stellate above, repeatedly and ap- 
proximately branched; leaves linear, 4 to 5 cm. long below, 
2 to 3 cm. above, 4 to 8 mm. wide, entire, apex generally 
obtuse; base 1- to 3-nerved, cinereous-tomentose below, 
darker and velutinously short stellate above; petioles 5 to 
20 mm. long; raceme 1 to 2 cm. long, tomentose; stami- 
nate flowers several, short pedicelled; bracts setaceous; 
sepals 5, elongated-oblong; petals linear, ciliate; stamens 
8 to 10; pistillate flowers subsessile and clustered at 
base of the raceme; sepals 6 to 7, unequal, loose tomen- 
tose; petals none; glands annular, thin or sometimes 
ci 
