ROBINSON AND GREENMAN. —GENUS ZINNIA. 15 
ee Ze. pumila, Gray. Very similar to the preceding: leaves linear, 
flat, mostly less than half inch long, prominently 1-nerved. — Pl. Fendl. 
81, Pl. Wright. i. 105, & ii. 86. — Hills, W. Texas, Wright, nos. 323, 
1215, to Arizona, Camp Grant, Palmer, no. 122, near Tucson, Greene, 
no. 1106, Camp Lowell, Pringle, Lemmon, nos. 91, 92, near Sta. Cata- 
lina, Lemmon, no. 3033, Lowell Mts., W. F. Parish ; Mexico, on high 
plains near San Juan de la Vequeria and at ‘‘Castaniola” (= Cas- 
tanuela?), Gregg, no. 279; on lanos of Sonora, Schott ; east of Guada- 
lupe Cafion, Z. K. Smith; near Carneros Pass, Coahuila, Pringle, no. 
2390 (distrib. as Z. acerosa); San Luis Potosi, Schaffner, no. 336, and 
Parry & Palmer, nos. 439, 440. The technical distinctions between this 
and the preceding are unsatisfactory at best, although the specimens are 
for the most part pretty readily distinguished upon the feliar differences. 
+ + Leaves 3-nerved. 
3. Z. juniperifolia, Gray. Leaves somewhat longer than in the 
related species, the larger ones inch or more in length, usually whitish 
beneath: rays oblong, mostly 2 or even 3 times as long as broad, of deep 
orange color. — Pl. Wright. i. 105. Diplothrix juniperifolia, DC. Prodr. 
vy. 612. — North Mexico, mountains near San Juan de Vanegas, Berlan- 
dier, 1359 ; without locality, Gregg, no. 68; Santillo, Parry, no. 40, and 
near same locality, Palmer, no. 576; and on limestone hills, Carneros 
Pass, Pringle, no. 2404. , 
4. Z. grandifiora, Nutt. Leaves less than an inch in length: 
rays pale or sulphur yellow, very broad, suborbicular in outline. — Nutt. 
Torr. & Gray, Fl. ii. 298; Torr. in Emory, Report Reconn. Calif. t. 4. 
— Colorado, on bluffs near Pueblo, Greene, to W. Texas, Wright, nos. 
322, 1213, Pope, Ft. Davis, Girard ; New Mexico, Fendler, no. 400, near 
Santa Fé, Wi islizenus, no. 415; Arizona, near Ft. Whipple, Cowes & 
Palmer, no. 2821, Ft. Apache, Palmer, no. 583, Mustang Mts., Pringle, 
Huerfano, Parry, no. 106, Upper Canadian River, Emory; Sonora, 
Thurber, no. 812, Smith ; San Cedro, Lloyd, no. 401. 
* * Ligules almost obsolete, shorter or scarcely longer than the achenes. 
O.. 2. anomala, Gray. Scabrous-pubescent: leaves 9 lines to inch 
n length, line to line and a half in breadth: heads 3 to 5 lines in di- 
ameter, appearing discoid or with evident but short yellow rays: disk- 
flowers apparently orange-red ; the limb velvety-margined. — Pl. Wright. 
106. — Prairies of W. Texas, Wright, nos. 325, 1216; near Saltillo, 
, Coahuila, Mexico, Palmer, no. 581. First coll. (acc. to Gray, 1. ¢.) by 
_ Berlandier in Northern Mexico. | - 
