30 
Knickerbocker Nursery 
OPUNTIA 
An interesting cactus low in scale of evolution. 
Hence the leaf 
O. erinacea. Long numerous, sort, thin spines giving it a 
hairy look. Magenta flowers_25c to #3.00 
Var. ursina. From Mojave Desert. Denser spines, 
yellow flowers. The grizzly bear_25c to #3.00 
O. grandiflora. The largest of the Texas cactus. Large 
yellow flowers with red centers__50c 
O. leucotricha. A very large stately variety with short, 
pure white hair-like spines. Large plants_#2.00 
Cuttings _10c 
O. Iinguiformis. The peculiar cow’s tongue cactus of 
Texas. Per leaf_25c 
O. macrocentra. Purplish leaves, a few very long spines 
on the margin _— 35c 
O. margarita. L. Calif. Densely covered with pink- 
brown spines__-----35c 
O. michrodasys. Covered with tiny golden yellow spines 
looking like velvet but dangerously deceptive. Small 
ones are perfect in bowls_15c to #1.00 
var. rufida. Like the above but the spines are au¬ 
burn in color and spaced more widely. A perfect 
harmony of color are those rich hues on a dark 
green ground _25c to 50c 
O. monacantha. (vulgaris). Brazil. Thin pads with long,_ 
dark spines ___15c up 
monacantha variegata. The best seller because of its 
unusual marbled mosaic of color and design _ 15c up 
O. orbiculata. (crinifera lanigera, senilis). Mexico. 
Grown under glass covered with white hair; in open 
has yellow spines only__15c 
O. pottsi. Red flowered_15c to 25c 
O. rafinesque. (opuntia). Indiana. Hardy. Small green 
pads. Grows erect in summer but becomes procum¬ 
bent in fall so that snow will not break it..15c 
O. retrorsa. A very charming dark green, shining, spraw¬ 
ling Opuntia. Each spine seems to cast a long pur¬ 
ple shadow. The joints are flat but very thick and 
nearly round. Not common_15c to 25c 
O. rubescens. (Consolea). From Porto Rico. Smooth, 
dark green, almost spineless, rare and beautiful in 
shape —__ ___50c 
O. santa-rita. Purplish pads in winter. Sage green in 
growing season. Flowers golden yellow, as large as 
a water lily. Ariz. ___25c to #1.00 
O streptacantha. San Luis Potosi. One of the most im¬ 
portant food cacti of Mexico ___15c 
O. subulata. S. America. Different from any native 
Opuntia. Round stems, pronounced conic leaves. 10c to 25c 
O. tuna amarilla. Single pads_____15c 
O. tomentosa. Mex. Short spines, velvety stems_15c 
Oreocereus celsianus. (Bolivia). Yellow spines, long 
white hairs. S. ____35c to 75c 
O. trolli. Very hairy. Striking. S__40c to 50c 
