Sept.£4,I94J 
6 
4$ Km.north El Pino 
‘"'2420 Purple,ascending,rocky slopes,frequent 
*-''2421 Purple,erect,rocky slope,scarce 4 " " " 
‘"'2422 Purplish white,ascending,rocky slopes,frequent 4 " " " 
^£423 Ascending,rocky slope, scarce 4 " T! " 
*"'2424 White,erect,rocky slope,scarce 4 ” ” " 
‘"'2425 Whitish,ascending,rocky slopes,frequent 4 " " " 
*""2426 Tascate,tree 4 M.dia,40 cms.Scarce 4 ” " 
•'"2427 Blue,ascending,rocky slopes,frequent 5 ” " 
/2A28 Yellow,ascending,rocky slopes,frequent 6 " ” « 
Sierra Rica is an igneous mountain for the most part ryolitic that rises 
rather abruptly from elevated low rolling hills on the south-eest,and from 
much lower terrain on its north-west slopes.The axis of the mountain is north- 
cast , south-west . Some limestone was observed in the foothills on the south-east 
side of the mountain.Sierra Rica is the termination on the north of the elevated 
highlands known locally as the Rancheria del Norte.Sierra Rica is 
approximately 8 Kilometers wide,by 15 long.One of the most iHHHNfrfcfcifc noticeable 
features of the mountain is the large amount of pinyon that covers its slopes, 
and pecks. 
The Canon de la Madera starts at the Rancho de la Madera and runs north- 
south into the mountain of Sierra Rica.From the mouth of the canon to the highest 
points in the mountain it is all an oak end pinon belt.Water runs in the canon 
during the rainy season and for a short time afterwards. 
Sierra Rica,Chih. Madera 
1^2429 Purple,ascending,shady arroyo bank,frequent I Km.S tE.R ancho de la Madeil 
*^<430 Purple,ascending,small gypsum outcrop on slope,scarce I Km.S.E. 
i/2 431 Orange,ascending " r > " » " " j » n 
/'24Z2 Pinkish,ascending,confined to smell gypsum outcrop on slope 
abundant ' I Km.S.E. 
433 Purple,ascending,small gypsum outcrop on slope,frequent I Km.S.E 
t/2Ac4 Zacate,ascending,confined, to smell gypsum outcrop on 
slope,frequent I « " 
^ 2435 Shrub,50 cms.small gypsum outcrop on slope,scarce I " ” 
"2436 Whitish yellow,ascending to erect,small gypsum outcrop 
on slope,frequent 
I " 
‘•"2437 White,ascending,small gypspm outcrop on slope,frequent I " 
^2438 Shrub I M.small gypsum outcrop on slope,frequent I " 
*^2439 Whitish,ascending to erect,arroyo bank,scarce, I " 
^440 Purple, ascending,arroyo bank,frequent I " 
/244I White,ascending,dry rocky arroyo,scare 
e 
