42 
Knickerbocker Nursery 
O. scheeri. Mexico. Almost covered with yellow, hair-like 
spines. FIs. yellow. Handsome. Cuts...15c 
O. stenopetala. Mexico. Spines black. FIs. orange-red. Beau¬ 
tiful. Cuts.15c 
O. strigil. Texas. Many reddish-brown spines and glochids. . 
O. sulphured. Argentina. Strikingly handsome. Cuts.15c 
O tomentosa. Mex. Short spines, velvety stems. 
O. tracyi. Miss, to Fla. Small, oval pads with long, light spines 
and yellow fls. with green blotch. 
O. vaseyi. S. Calif. Spines light brown, fls. deep salmon. 
O. ivhitneyana var. albiflora. Hardy. Ruffled, white, many 
petaled fls. 
OREOCEREUS 
Oreocereus celsianus. . Bolivia. Brownish spines, long wooly 
hairs on top.35c to 75c 
O. fossulatus. Argentina. Long, w'hite wmol and long yellow 
spines. A fine Cereus .25c to $1.00 
O. trolli. The hairiest of the three Oreocereus listed here. Ex¬ 
ceptionally beautiful.25c to $1.00 
PACHYCEREUS 
P. marginatus . Mexico. "Organ Cactus.” Smooth, green col¬ 
umns, usually 4 to 7 ribs with small spines regularly spaced 
on them. Used as hedges in Mexico.25c to $7.50 
P. pecten-aboriginum. Mexico. Giant. S.25c to 50c 
P. pringlei. Lower Calif, and Mexico. Similar to the Carnegiea 
gigantea but slenderer when young. One of the very largest 
cacti.$1.00 to $2.00 
Pelecyphora pseudopectinata. Mexico. Grafted.$1.00 
P. valdeziana. Mexico. Dwarf.$1.00 
Peniocereus greggi. The strange night bloomer of the S. W. 
Enormous tuberous roots; slender, ribbed stems; big, white 
fls. Grows in shade. Does not do well unless grafted. 
Large grafted plants.$1.00 
Oreocereus celsianus 
