( 18 ) 
7/I8/4I-840 Erect gravelly flats abundant 
841 " Zotol I-fi M. Abundant 
3 K.N.W.Sta.Elena. 
Vicinity Sta.Elena. 
Left Santa Elena for Sierra del Diablo,Chihuahua via Puerto San Jose, 
Sierras de Leija,Rancho Almagre, Cerro Solo and made camp at the 
Canyon del Rayo on the north side of the Sierra del Diablo,Chih. 
&?/;• 4/41- 842 Costilla de Vaca 1-2 M.shrub rocky hillside 
Fairly common I5K. So.Puertp San Jos 
" 843 White prostrate heavy silt ■‘•oboso flat not common 15 K.So.Almagre 
844 Yerba Mora White shade near tank not common 
845 White erect 15-35 cms. Toboso flat 
A ancho Cerro Solo,Coah; 
4 K.West °erro Solo 
I #*****@4© Sierra del Diablo is a very rough limestone mountain lying just 
inside the Chihuahua line and south-west of Sierra Mojada,Coah; 
The mountain is broken up by many canyons filled with large boulders. 
The sides of the canyons which have not practically vertical walls 
are covered with s very dense growth of scrub-oak and Y&rijuhjShrubs. 
There are two old indian trails leading up to some high^’^B^^nn the 
north-western end of the mountain.Except in the rainy season the mount 
ain is very dry,as the water sinks into the limestone very soon after 
each rain-fall.The elevations of the highest peaks are probably 
around 2000 meters,about 600 meters above the surrounding 
country.The axis of the mountain is N.W.SJR.The mountain is about 
40 kilometers long by 25 wideThe canyon dn^Rayo is on the N.E.side 
of the mountain. Rayo 
f/25/4I-846 White shrub 1-3 M. gravelly hills below Yucca belt 6 K.N.E.Canyondel 
" 847 Orchid spreading shrub Common 4 ” " ” ” 
" 848 Yellow erect gravelly silt fairly common 4 K.N.E.°anyon del Ray 
" 849 Purple 25-70 cms. gravelly hills fairly common 4 K.N.E.Canyon del Rayo 
850 Orchid erect " 
851 Yellow erectsA " 
852 Yellow erect 15-35 cms.” 
853 Yellow shrub IM. " 
common 
ii 
” fairly common 
Common 
854 Lavender erect 10-25 cms. Common Gravelly hills2 " n " 
855 Purple erect 20-40 cms.gravelly hills common 2 " ” " 
856 White erect silty arroyas common I ” ” ,T 
857 White erect " " " I " " " 
858 Cebolla Cimarron erect 20-40 cm. silty hills 
Common 
859 Yellow erect Rocky dry arroya Not common 
860 Erect " " ” " »’ 
j ti n ii 
Mouth Canyon del Rayo 
n ti it ti 
861 White vining to 2 M. on shrubs Bank dry arroya 
Fairly common 
862 White erect bank dry arroya fairly common 
