[1885. PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 493 



Mimosa Lindheimeri, borealis, Muncifera. 



J)alea formosa. 



Coldenia Greggii and canescens. 



Celtis pallida. 



Microrhamnus ericoides. 



Lippia Wrightii, lycioides, graveolens. 



Salvia Greggii. 



Lonicera dumosa. 



Anisacanthus Thurberi. 



Leucophyllum Texanum and minus. 



Berberis trifoliata. 



Buddleia marrubiifolia. , 



Mortonia scabrella. 



Dicrourus diffuses. 



Kramer i a canescens, parvifolia, and var. ramossissima. 



Flourensia cernua. 

 Nolina Texana, 'Yucca baccata and Sotol are common. Lechuguilla, 

 a form with low, slender stems and geminate flowers, besets the hill- 

 sides j higher up is the large Maguey ( Agave Wislizeni) already noticed 

 in the Guadalupe and Limpio Mountains, here with stout stalks 15 to 

 18 feet high. 



Of the flowering herbs the most characteristic are : 



Aquilegia chrysantha. 



Mirabilis Wrightii. 



Boerhaavia paniculata and erecta. 



Nicotiana trigonophylla. 



Linum rigidum and rupestre. 



Menodora scabra, pubens, longiflora. 



Abutilon Wrightii and crispum. 



Anoda cristata. 



Pavonia Wrightii. 



(Enothera pinnatijida, tubicoJa, Greggii. 



Gaura coccinea and sinuata. 



Phacelia congesta and integrifolia. 



Dalea frutescens, Wrightii, lachnostachys, aurea, mollis, rubescens. 



HosacMa puberula. 



Indigo/era Lindh eimeriana. 



Besmanthus velutinus. 



Rhynchosia Texana. 



Galium Wrightii. 



Eriogonum Abertianum, annuum, rotundifolium, Havardi. 



Thamnosma Texanum. 



BOFECILLOS MOUNTAINS. 



About 15 miles below Presidio del Norte, begins the high, grassy pla- 

 teau of the Bofecillos, drained, as already seen, by Ternero and Grape- 



