1885.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 489 



Aplopappus spinulosus, blephariphyUus, rubiginosus. 

 Chrysopsis villosa (vars. canescens and foliosa). 

 Actinella scaposa (var. linearis) and linearifoUa. 

 Bidens Bigelovii. 

 Senecio longilobus. 

 Aster multifiorus. 



Helianthus petiolaris and lenticularis. 

 Grasses : 



Bouteloua oligostachya, racemosa (var. aristosa), eriopoda. 



Andropogon saccharoides and furcatus. 



Muhlenbergia Texana, paucijlora, areiiicola, setifolia (Vasey, n. sp). 



Hilaria mutica. 



PappopJioruni Wrightii. 



Triodia acuminata. 



Sporobolus asperifolius. 



Eragrostis tenuis and capillaris. 



Setaria oaudata. 



Aristida dispersa and purpurea. 



About 3 miles northeast of Pine Spring is a small valley down which 

 runs Five Spring Creek, and containing large Cottonwood and Chestnut 

 Oak. AgiantSunflower(^e/mwi/ms<7ros.9e-serrfliws), alarge flowered form 

 of (Enothera biennis am\ the Water Hemlock {Cicuta macuJata) thrive in 

 the marshy ground, mixed with Cat-tail [Typha latifolia) urn] Wild Broom 

 Corn {Phragmites communis). A few miles further is another pretty 

 brook (Marr's Creek), shaded with Ash {Fraxinus pi staciw folia) and Black 

 willow. The grazing is excellent in the foot-hills. At Grapevine Creek 

 there is hardly any timber, but the grass continues fine. 



Snake Spring, a large body of slightly saline water, issues from the 

 ground about 2 miles from the base of the mountain. The grazing in 

 its immediate vicinity is poor, but the possibility of irrigation permits 

 the raising of corn and vegetables. The country improves and fine 

 rolling prairies are passed on the way north to Brigg's Ranch. Black 

 Eiver, where the road strikes it, is dry and timherless. Brigg's Creek, 

 a permanent, salt-water stream, has its source in the foot-hills under a 

 bower of Hackberry, Soapberry, and Sumac [Rhus copallina). 



The mountain, here, is hardly more than a high table-land, gradually 

 sloping northward to the level of the plain. It is bare of arborescent 

 vegetation, and mostly covered with the exceedingly noisome Lechu- 

 guilla. The leaves of this Agave change very little, but the variations 

 of its fruiting stem — from a stalk the thickness of the little finger, and 

 3 to 5 feet high, bearing few sessile, geminate pods, to a stalk 1 finches 

 thick and 10 feet high, bearing an ample pyramidal panicle 4 feet long — 

 are puzzling and interesting. 



A foot-trail, up Rattlesnake Canon and over a rocky divide, led us into 

 Guadalupe Caiion, a picturesque mountain valley in the heart of the 

 range, fairly timbered with Chestnut Oak and Gray Oak, Cottonwood, 



