( 460 ) 
2. Hymenoc.tes Monocyra Torr. & Gray, Pl. Fendl. 79. 1849. 
Tyre locality: “Along the valley of the Gila.” 
Distribution: In the vicinity of San Diego and adjacent Lower 
California, eastward to western Texas. Lower Sonoran. 
Specimens examined: Chollas Valley, Susan G. Stokes, Aug. 
25, 1895; Mission Valley, San Diego, Brandegee, Aug. 1902; San 
Diego, Orcutt, Oct. 11, 1883. 
2. GAERTNERIA. 
Spines of the bur straight. 
Leaves pinnately parted; spines glabrous or minutely pubescent. 
1. G. dumosa 
Leaves sinuate-toothed to sinuate-pinnatifid; spines villous. 
2. G. eriocentra. 
Spines of the bur uncinate. 
Leaves petioled, crenately toothed. 3. G. oe 
Leaves clasping, coarsely spinose-dentate. 4. G. iltetfolt 
1. GAERTNERIA DuMosA (A. Grav) Kuntze, Rev. Gen. Pl. 1: 339. 
Franseria dumosa A. Gray, in Frem. Second Rep. 316. 1845. 
Type locality: “On the sandy uplands of the Mohave River, 
and very common in all that region of North California.” 
Distribution: A very common and characteristic shrub of the 
Mohave and Colorado Deserts, extending eastward to southern 
Utah, and southward into northern Mexico and Lower California. 
Lower Sonoran. 
Specimens examined: Signal Mlountain, Imperial County, 
Abrams 3179; Mohave Desert, Brandegee; Palm Springs, Parish 
412i. 
2, GAERTNERIA ERIOCENTRA (A. Gray) Kuntze, Rev. Gen. Pl. 
339-1891 
Franseria eriocentra A. Gray, Proc. Am. Acad. 7: 355. 1868. 
Type locality: “East slope of Providence Mountain, Arizona.” 
Distribution: From the Providence Mountains, eastward through 
southern Nevada and adjacent Arizona. Lower Sonoran, 
Specimens examined: I have not seen any specimens from 
southern California. 
