648 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
5. COELESTINA Cass. 
Perennial herb, suffrutescent at the base, puberulent; leaves opposite, petiolate, 
the blades ovate or deltoid, crenate, thick, gland-dotted beneath; heads few, cam- 
panulate, many-flowered, glomerate at the ends of the long naked branches; bracts 
linear, appressed, striate; flowers bluish; achenes 5-angled, the pappus a short den- 
tate crown. 
1. Coelestina sclerophylla Woot. & Standl. Contr. U. S. Nat. Herb. 16:176. 1913. 
TYPE LOCALITY: In Guadalupe Canyon, Sonora. Type collected by E. C. Merton 
(no. 2031). 
Rance: Northern Sonora to southwestern New Mexico and southeastern Arizona. 
New Mexico: Guadalupe Canyon. 
6. STEVIA Cav. 
Annual or perennial herbs with opposite or alternate, mostly narrow, entire or 
toothed, sessile leaves and small narrow heads in panicles or corymbs; heads cylindric, 
the flowers white or purplish; achenes linear, sometimes compressed; pappus palea- 
ceous or aristiform, dr of both awns and short scales, 
KEY TO THE SPECIES, 
Annual; heads loosely paniculate.................2.2.2-2.2-000- 1. S. micrantha, 
Perennials; heads corymbose. 
Upper leaves mostly alternate, linear to linear-lanceolate; 
stems rather densely leafy, pubescent or hirsute... .... 2. S. serrata. 
All leaves opposite, lanceolate (conspicuously veined); stems 
less leafy, puberulent...................2.0-.2-2-2-2-0- 3. S. plummerae. 
1. Stevia micrantha Lag. Gen. & Sp. Nov. 27. 1816. 
Stevia macella A. Gray, Pl. Wright. 2: 70. 1853. 
TYPE LOcALITY: Mexico. 
Rance: New Mexico and Arizona to Mexico. 
New Mexico: Fort Bayard (Blumer 128), Low mountains. 
2. Stevia serrata Cav. Icon. Pl. 4:33. pl. 35. 1797. 
Type Locauity: ‘‘ Habitat in Nova-Hispania.”’ 
Rance: Southern New Mexico and Arizona to Mexico. 
New Mexico: Mogollon Mountains; Hanover Mountain; Sacramento Mountains, 
Hills and mountains, in the Upper Sonoran and Transition zones. 
3. Stevia plummerae A. Gray, Proc. Amer. Acad. 17: 204. 1882. 
Type Locauiry: Rucker Valley, Chiricahua Mountains, southern Arizona. 
RancGe: Mountains of southern Arizona and southwestern New Mexico, 
New Mexico: Mogollon Mountains; Sawyers Peak. Transition Zone, + 
7. CARPOCHAETE A. Gray. 
Low shrub, 40 cm. high or less, with slender brittle branches; leaves opposite, entire, 
sessile, spatulate-oblong, bearing fascicles of leaves in their axils; heads solitary or 
clustered; flowers rose-colored; involucre cylindric, of few acuminate bracts; achenes 
puberulent, the pappus paleaceous-aristiform. 
1. Carpochaete bigelovii A. Gray, Pl. Wright. 1: 89. 1852. 
Type Locatiry: ‘‘On the boundary between Mexico and New Mexico.”’ Type col- 
lected by Bigelow. ; 
Rance: Southern New Mexico and Arizona and southward. 
New Mexico: Emory Peak; Organ Mountains. Dry hills and canyons, in the 
Upper Sonoran Zone. 
