CATALOGUE OF PLANTS COLLECTED IN SALTON SINK. 



Ill 



ASCLEPIADACE.E— Continued. 



Philabertia linearis B. & H. var. heterophylla Gray. 



PhUabertella hartwegii var. heterophylla Vail. 

 Occasional in dry soil throughout the Sink. AguaDulce, 



near Brawley (8327), Holtville (8081), mounds near 



the Alamo River east of Calexico (8327). 

 A common species of the desert, abundant in the 



Colorado River bottoms, and passing westward into 



cismontane southern California. 



CUSCUTACE.E. 



Ctjscuta caijfoenica Choisy. 



A few plants, parasitic on alfalfa, in the town park at 

 Holtville (8080). Slight infestments on alfalfa, seen 

 elsewhere in Imperial Valley, were probably the 

 same. 



A common indigenous species in many parts of Cali- 

 fornia. 



POLEMONIACE.E. 



Langloisia schottiiTorr. Gilia schottii Gray. 



A few plants in sandhills northeast of Mecca (8466). 

 A common species of the Colorado Desert. 



HYDROPHYLLACE.E. 



Heliotropium curassavicum Linn. 



A subordinate member of halophytic associations 

 throughout the Sink; rarely dominant over limited 

 areas, as on flats near Caleb. Mecca (MacDougal 

 5, 105), near Salton (8072), Obsidian Island (Mac- 

 Dougal 45), Dos Palmas, Rockwood, borders of 

 Salton Sea near Westmoreland, El Centro, New 

 River at Calexico. 



Widely distributed in California and in most of the 

 warmer parts of North America. 



Phacelia crenulata Torr. 



A single plant, in the sandhills northeast of Mecca 



(8464). 

 Infrequent in the southeastern Colorado Desert and 

 thence to Arizona and New Mexico. 



Eriodictyon californicum Greene. 



A single insulated society, occupying an acre or more 

 near Indio. 



This common species of cismontane southern Cali- 

 fornia occurs in a few places on the desert slope, as 

 at Whitewater. The present station is its farthest 

 known eastern and southern limits. 



Nama hispidum Benth. 



" Alamo river-bed " according to Davy's list. The 

 specimen (Davy 7965) is in the herbarium of the 

 University of California and the locality noted on 

 the label is Calexico. It has also been collected at 

 Palo Verde on the Colorado River. 



BORAGINACE.E. 



Cryptanthe angustifolia Greene. 



In a desiccated pool at the old beach east of Holtville 



(8124). 

 Common species of the Colorado Desert, extending 

 into Arizona. 



Cryptanthe barbigera Greene. (?) 



Obsidian Island (MacDougal 25, 26). 



The specimens are too young for positive determina- 

 tion, but the species is common in the Colorado 

 Desert and in Arizona. 



Cryptanthe costata Brandegee. 



In sands near Travertine Terraces (8429). Sandhills 



near Mecca (8465). 

 An endemic species of the Colorado Desert. Deter- 

 mined by Mrs. Brandegee. 



BORAGINACEJE— Continued. 



Krynitzkia micrantha Gray. Eremocarya micrantha 



Greene. 

 Sandhills northeast of Mecca (8464). 

 A common plant of arid soils in southern California, 



extending eastward to Arizona. 



Coldenia plicata Coville. C. palmeri Gray. 



A common xerophyte of the Sink, especially in detrital 

 soil, but occasional elsewhere. Mecca, Durmid, 

 Imperial Junction, Figtree John, El Centro, West- 

 moreland. 



A common species of the Colorado Desert. 



Pectocarya penicillata A. DC. 



Mesa at Mecca (8448). 



Common in arid soils in southern California. 



LABIATE. 



Mentha citbata Ehrh. 



In the stream from the railway waterworks, Mecca 



(8462, 8608). 

 Naturalized sparingly in cismontane southern Cali- 

 fornia. 



VERBENACE.E. 



Lippia nodiflora Michx. 



In the moist soil of river bottoms in Imperial Valley. 



New River at Rockwood (8330) and Calexico 



(8332), Obsidian Island (MacDougal 38). 

 A cosmopolitan tropical species; in California known 



only along the lower Colorado and as above. An 



entrant from the delta. 



SOLANACE^. 



SOLANUM ELEAQNIFOLITJM Cav. 



About railway station yards and tracks. Durmid, 

 Imperial Junction (8104), Imperial, Meloland. 



This weed entered southern California along the 

 Southern Pacific Railway, and is now widely dis- 

 tributed throughout its length in southern Cali- 

 fornia, but is not abundant. 



Physalis wrightii Gray. 



Rare in river bottoms, but very common along canals 

 and in irrigated lands, in Imperial Valley. Brawley, 

 Imperial, El Centro, Meloland (8091), Rockwood 

 (8338). 



An entrant from the delta and apparently owing its 

 presence here mainly to the irrigation system. It 

 occurs also in the Colorado River bottoms at Fort 

 Yuma and is now for the first time reported from 

 California. The type was collected in southwestern 

 Texas. 



Physalis crassifolia Benth. 



A single plant at the base of the range southwest of 



Travertine Rock (8435). 

 A migrant from the desert mountains, where it is a 



common chasmophyte in both deserts. 



Datura discolor Bernh. 



Streets at Mecca (8335), and along a road in the flats 

 a few miles west, along a canal at Dixieland (8336), 

 in somewhat damp soil not far from the borders of 

 Salton Sea at Caleb and Agua Dulce. 



This Mexican species grows in the bottom lands of the 

 Colorado River at Fort Yuma, where it appears in- 

 digenous. In the Sink it is an entrant from the 

 delta, apparently recent. The stations at Agua 

 Dulce and the Mecca flats are all on land flooded 

 by the recent Salton Sea; that at Caleb is slightly 

 above the late high-water mark. It thus maintains 

 the ambiguous character assigned it by Gray in 

 the Synoptical Flora, where it is insufficiently de- 

 scribed. 



