344 PROCEEDINGS OF THE AMERICAN ACADEMY. 
species are slightly stouter and more pubescent than any other 
specimens examined but show no essential differences.— LOWER 
CALIFORNIA: Lagoon Head, Mar. 1889, Palmer 795; Natividad 
Island, 10 April 1897, Brandegee; Cape San Lucas, &c., Aug. 1859- 
Jan. 1860, Xantus 62 (ryPE of C. heterocarpus); San José del Cabo, 8 
Mar. 1892, Brandegee 339; La Paz, 20 Jan.—5 Feb. 1890, Palmer 19; 
Santa Agueda, 4-6 Mar. 1890, Palmer 248; mountain sides, Los 
Angeles Bay, Dec. 1887, Palmer 660; Lower California, without 
locality, Dr. Street. 
* * Suffrutescent perennials. 
+ Achene-wing pectinately dissected. 
a 2. C. arizonicus (Gray) Blake, n. comb. Much branched from a 
woody base, nearly or quite glabrous; leaves 7-10.5 cm. long, pin- 
nately divided into 3-5 linear lobes 1-3 mm. wide; heads rather nu- _ 
merous in panicled few-headed cymes; involucral scales 5-6 mm. long; 
rays 5-6, 7 mm. long; achenes with the wing split into flattened cu- 
neate lobes, the inner achenes narrower; retrorsely spinulose awns 
sometimes present.— Leptosyne (Coreocarpus) arizonica Gray, Proc. 
Am. Acad. xvii. 218 (1882). Coreopsis arizonica O. Hoffm. in Engler 
& Prantl, Nat. Pfl. iv. Ab. 5. 243 (1890).— Arizona: along streams, 
Ft. Lowell, Aug. 1880, Lemmon (cotyre); by streams of the Santa 
Catalina Mts., 760-1060 m., April 1881, Pringle (corypE); Santa 
Catalina Mts., May 1881, Lemmon 211; mountains, Lowell, 8 May 
1884, W. F. Parish 112. Sonora: Touithebs: 18 Nov. 1890, F. E. 
Lloyd 407; Alamos, 1890, Palmer 384 (approaching the next form); 
CHIHUAHUA: southwestern part, 1885, Palmer 294. 
28. C. arizonicus (Gray) Blake var. pubescens (Rob. & Fern.) 
Blake, n.comb. Whole plant pubescent with short rather soft hairs.— 
Leptosyne arizonica var. pubescens Rob. & Fern. Proc. Am. Acad. xxx. 
118 (1894).— Sonora: Granados, 905 m., 15 Nov. 1890, Hartman 
222; Huchuerachi, 1220 m., 5 Dec. 1890, Hartman 296; Agnos 
Blanco, 9 Dec. 1890, Lloyd 406. 
2y. C.arizonicus (Gray) Blake var. filiformis (Greenm.) Blake, 
n. comb. Leaf-lobes linear-filiform, less than 1 mm. wide, the lower — 
4-6 cm. long.— Leptosyne arizonica var. filiformis Greenm. Proc. Am 
Acad. xl. 44 (1904).— Srvatoa: Sierra de Choix, 80 km. NE. of 
Choix, 15 Oct. 1898, Goldman 258 (coryrs in Gray Herb.). 
+ + Achene-wing thick, ys ose, entire or barely crenulate; leaves 
fles' ipinnatifid. 
3. C. dissectus (Benth.) ei n.comb. Suffrutescent, trichoto- 
mously branched, glabrous; leaves mostly crowded near the base 0 
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