496 PKOCEEDINGS OF UNITED STATES NATIONAL MUSEUM. [1885. 



Castilleia Integra. 

 Seymeria scabra. 



Staehys Bigelovii, shade of rock near summit. 

 Poliomintha mollis. 



Cedronella micrantha and pallida (var. parviflora). 

 Silene laciniata var. Greggii, upper slopes. 

 Aquilegia longissima (new to the United States), upper cafLons. 

 Desmanthus velutinus. 

 Sosackia puherula. 

 Dalea frutescens. 



Oxybaphus aggregatus, upper shady slopes. 

 Tradescantia leiandra, shade of rock. 

 Talinum parviflorum, shade of rock. 



Sedum Liebinajinianinn (uew lo the United States), shade of rock. 

 Cotyledon strlctiflora, sides of rocky canons. 

 Hibiscus Coulteri, common on gravelly foot-hills. 

 Heuchera rubescens, upper shady slopes. 



Spiranthes chinabarina (new to the United States), only one speci- 

 men, seen on rocky foot-hill. 

 JEvolvulus alsinoides. 

 Asclepias perennis,\iiv.parvula. , 

 Gilia aggregata and incisa. 

 Phacelia congcsta and integrifolia. 

 Linum peremie, Greggii, multicaule. 

 Eriogonum tenellum on hills, and Wrightii in canons. 

 Thelypodium lincarifolium. 

 Galium microphyllum. 

 Grasses : 



Stipa tenuissima. 

 Lycurus phleoides. 

 Melica mutica, var. glabra, 

 Bromus ciliatus, var. minor. 

 Stipa Jimbriata. 

 Cathestechum erectum. 

 Muhlenbergia distichophylla. 



In arroyos, at the northern base of the mountains, the handsome 

 Anisacanthus pumilus is common, and a new species, Nama Havardi, 

 (Gray), stout and erect, was collected. 



SALT LAKES BASIN. 



This barren and desolate tract of alkali land begins at the western 

 base of the Guadalupe Mountains, above Crow Spring, and extends 

 in a south-southeast direction to Rattlesnake Spring, having Sierras 

 Prieta and Diablo to the west, and to the east the Guadalupe Mount- 



