42 
Knickerbocker Nursery 
U. rafinesque (opuntia). Indiana. Hardy. Small green 
pads. Grows erect in summer but becomes pro¬ 
cumbent in fall so that snow will not break it. 
O. retrorsa. Argentina. A very charming dark green, 
shining, sprawling Opuntia. Each spine seems to cast 
a long purple shadow. The joints are flat but very 
thick and nearly round. 
O. rhodantha. Brownish spines, red or pink flowers. 
Colorado. 
O. rubescens (Consoled ). From Porto Rico. Smooth, 
dark green, almost spineless, rare and beautiful in 
shape ...—. 
O. r uf id a. Texas and Mexico. Like microddsys but the 
spines are auburn and more widely spaced. A per¬ 
fect harmony of color are those rich hues on a dark, 
green ground. 
O. santa-rita. Arizona. Purplish pads in winter. Sage 
green in growing season. Flowers golden yellow, 
as large as a water lily. 
O. scheeri. Mexico. Almost covered with yellow, hair¬ 
like spines. FIs. yellow. Handsome. Cuts.15c 
O. scheeri. White spines. Rare.. 2 5c 
O. strigil. Texas. Many reddish-brown spines and glochids. 
O. sulphured. Argentina. Strikingly handsome. Cuts. 
O. tortispina. Prostrate, spines white, yellow or brown. 
Flowers yellow. 
O. treleasei. Rose flowers. Calif. 
O. whitney ana var. albiflora. Hardy. Ruffled, white, 
many petaled fls. 
OREOCEREUS 
O reocereus celsianus. Bolivia. Brownish spines, long, wooly 
hairs on top.3 5c to $1.50 
O. fossulatus. Argentina. Long, white wool and long 
yellow spines. A fine Cereus ...50c to $5.00 
O. trolli. The hairiest of the three Oreocereus listed here. 
Exceptionally beautiful .2 5c to $1.00 
PACHYCEREUS 
P. marginatus. Mexico. "Organ Cactus.” Smooth, green 
columns, usually 4 to 7 ribs with small spines 
regularly spaced on them. Used as hedges in 
Mexico ..2 5c to $10.00 
P. pecten-aboriginum. Mexico. Giant__$1.00 
P. pringlei. Lower Calif, and Mexico. Similar to the 
Carnegieu gigantea but slenderer when young. One 
of the very largest cacti__$1.00 to $2.00 
Parodia. Recently discovered S. Amer. genus of great 
interest and beauty of spine and flower. 
P. Aureicentra. Hooked golden spines. Own roots 50c; 
Grafted .. 75c 
P. aureispina. Golden spines, yellow flowers.20c to $1.00 
P. chrysacanthion. Straight, golden spines.3 5c to 50c 
P. maassi. Orange brown curved spines. 3 in.$1.00 
P. microspherica. White with brown central spines, own 
roots 50c; grafted_75c 
P. mutabilis. Red hooked spine. Own roots 50c; grafted 75c 
P. nivosa. White spines with red flowers_$1.00 
P. steumerit. Similar to P. maasii. Own roots 50c; grafted 75c 
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 
P. johnsoni. Lower Calif. Like the above with fewer ribs 
and more velvety stems. Rare. Large grafted .. 5 0c 
PERESKIA 
Pereskiae are the first form in evolution from other 
plants to Cacti. Cuts only for sale, easily rooted. 
P. godseffiana. The most beautiful one in coloring of 
the leaves. Supposed to have been a sport and to have 
originated in Australia. A fine hot house plant. Plants 50c 
