NO. 2 GENTRY : LAND PLANTS 175 



EuPATORiUM PuRPUSii Brgc, Erythea 7:3. 1899. 



Canyon above Puerto Escondido, Sierra Giganta, March 13, Rempel 

 160, canyon bottom. 



Southern Baja California in the mountains of the Cape District and 

 along the Sierra Giganta; type from San Pablo. A low polypodial her- 

 baceous perennial with stems 3-6 dm long, often forming colonial bushes 

 in the damp shady recesses of the mountains. The triangular serrate 

 leaves are large, 5-8 cm long, shallowly emarginate, the lower long petio- 

 late (4-7 cm long), the stems commonly purplish. Rarely collected. 



Franseria arborescens Brge., Zoe 5:162. 1903. 



Canyon above Puerto Escondido, Sierra Giganta, March 13, Rempel 

 151 (sterile), canyon bottom. 



Southern Baja California; type from Ascension. A large-leaved per- 

 ennial, which may form large woody-stemmed shrubs up to 3 m tall, 

 and which is one of the least xerophytic of the genus, apparently limited 

 to the canyons and arroyos, drawing upon subsurface run-off. 



Franseria dumosa Gray in Frem. 2nd Rep. 316. 1845. 



Los Angeles Bay, March 19, 20, Rempel 250 (sterile). 



Widely distributed in the drier areas of the Sonoran Desert from 

 central Sonora and middle Baja California north to the Mojave Desert 

 of southeastern California and southern Nevada, also in southern Ari- 

 zona; type from the sandy uplands of the Mojave River. It is lacking 

 or scarce in the arboreal desert of middle Sonora and the wetter areas 

 of the peninsula. It commonly forms a lov/, densely intricated, pallid, 

 and rather brittle bush with ephemeral leaves, pinnately dissected. The 

 burr-like fruits mature quickly and are easily detached from the rachis. 

 It normally flowers in March; the Rempel collection is indicative of a 

 dry season. 



Franseria ilicifolia Gray, Proc. Am. Acad. Sci. 11:77. 1876. 



North end of Los Angeles Bay, March 19, 20, Rempel 253. Puerto 

 Refugio, Angel de la Guardia Island, March 20, Rempel 279. 



Around the shores of the northern part of the gulf region including 

 nora; type from the "Great Canyon of the Tantillas Mountains, near 

 the border of Lower California," Baja California. A low, spreading 

 polypodial bush with harsh leaves having spiny marginal aristations. In 

 the gulf it is known from San Lorenzo, Angel de la Guardia, and San 

 southeastern California and adjacent Arizona, but not known from So- 

 Esteban Islands. 



