570 
7 
THE DICTIONARY OF GARDENING, 
Opuntia—continued. 
convex, the upper part yellow, bristly, the lower bearing four to 
six unequal, whitish prickles. Warmer parts of America, 1819. 
O. filipendula (drooping-threaded).* f. purplish, 24in. in 
diameter, very handsome. May and June. Stems about lft. 
high, spreading; joints flat, round or oval, about 3in. long, 
often less, bluish-glaucous; cushions in. apart, composed of 
a little tuft of white, woolly hair, and a cluster of erect, 
rather strong bristles; spines usually one to each cushion, 
slender, defiexed, white, lin. to 2in. long, but absent from 
some joints. 
Mexico. Stove., See Fig. 605. 
Fic. 605. FLOWERING BRANCHES OF OPUN'TIA FILIPENDULA. 
O. formidabilis (formidable). Plant deep glaucous-green. 
Stems short and thick, and covered with white, stiff spines 
6in. or more in length. Chili. 
OQ. frutescens is a form of 0. leptocaulis. ’ 
O. fulgida (shining). . bright pink, fading to purple, cup- 
shaped, usually less than lin. in diameter. July and August. 
Jr. fleshy, lin. to 14in. long, ovate. Stems 5ft. to 12ft. high, 
arborescent, flexuous, with a few divaricate branches; joints 
clustered at their ends, 3in. to 8in. long, very spiny, dull 
greyish, inclining to olive; spines lin. to lin. long, stellate. 
Arizona, &c., 1895. (G. & F. 1895, p. 324, f. 46.) 
0. Grahami (Graham’s). jl. yellow, 2in. across, borne on 
the ends of the ripened joints. June. fr. lin. long, 
stellate-spiny. Joints 2in, long, cylindrical, with adpressed 
tubercles 4in. or more in length, each bearing a tuft of long, 
radiating spines. Roots thick and fleshy. Mexico. Stove. 
O. horrida (horrid). A variety of 0. Tuna. 
O. humilis (dwarf). A synonym of O. Tuna. 
O. hystricina (porcupine-like). fl. yellow, large. //r. lin. long, 
spiny. Plant spreading; joints 3in. to 4in. long and broad; 
cushions rather large, Jin. apart, with numerous spines varying 
in length from 4in. to 4in., and short, yellowish bristles. San 
Francisco Mountains. Probably hardy. 
O. imbricata (imbricated) The correct name of O. decipiens. 
‘O. inermis (unarmed). A synonym of 0. stricta. 
©. invicta (invincible). #7. yellow, 2in. across, abundant. 
tr. covered with reddish spines. Plant low, branching; joints 
4in. long, 3in. thick, with star-like tufts of about twenty 
flattened spines, the shortest 2in. long. California. ‘This 
may be a Cereus, but it groups well enough with O, Schottii 
to be retained for the present in Opuntia” (Coulter). 
O. leucotricha (white-haired).* #. variable. June. J. in young 
plants small, subulate, bright red. Stem erect ; joints flattened, 
ovate or oblong, having numerous cushions, 4in. apart, of soft 
bristles, with a large central spine and a few shorter ones, all 
rigid and needle-like when young, but lengthening with age 
and becoming soft and curled like stiff, white hair. Mexico, 
1836. Stove. A beautiful species. 
O. lucida (clear).* 7. yellow, Rose-like in shape, large, fragrant. 
Stems 3ft. to 4ft. high; branches covered with a network of 
shining spines. Habitat not recorded, 1889. 
O. lurida (lurid), Candle Cactus. A tree-like plant, with 
elongated tubercles. (fl. dark yellow, Rose-shaped, with dense 
centre of stamens. Stems slender, with short, tine but strong 
spines. 
| 
Opuntia—continued. 
O. macrocentra (large-spurred).* fl. bright yellow, 3in. across, 
borne on the upper edges of the youngest joints. May and 
June. Joints flat, large, almost circular, thinly compressed, 
usually purplish; cushions lin. apart, with greyish spines, often 
3in, long and generally pointing downwards. h. 3ft. Mexico. 
Intermediate. A rare but desirable species. 
0. macrorhiza (large-rooted). jl. yellow, large and beautiful. 
Summer. Stems cylindrical at maturity; joints flattened, 
battledore-like, with deciduous spines longer than the tufted 
bristles on the stems, the newly-developed joints having small 
leaves; roots thick and fleshy, having the appearance of 
Potatoes, and supposed to be edible. Texas. This is now 
regarded as a form of O. Rajinesquii. See Fig. 606. 
O. maxima (largest). A synonym of P. decwmana. 
O. microdasys rufida (reddish). A variety with reddish- 
brown bristles. 
O. missouriensis. The correct name is 0. polyacantha. 
O. monacantha variegata (variegated). A very desirable 
variety, showing white and green variegation, 
0. occidentalis (Western).* jl. orange-yellow, nearly 4in. 
across, borne on the ripened joints. June. Jr. 2in. long, 
juicy but sour. Stem stout, woody, with numerous wide- 
spreading branches often bent to the ground; joints Yin, to 12in. 
long, 6in. broad, flattened, sometimes 100 on a plant; cushions 
nearly 2in. apart, with small, closely-set bristles, and straight 
spines 4in. to ldin. long. California. A fine plant where room 
can_be afforded; it requires rough, stony soil. Possibly 
hardy. 
0. pachyclada rosea (thick-branched, pink). ‘This is 
described as “a small-jointed dwarf, spreading form, which is 
probably a hybrid between 0. Sragilis and O. xanthostema.” 
Colorado, 1899. Hardy. 
Fic. 606. 
FLOWERING BRANCHES OF OPUNTIA MACRORHIZA. 
O. papyracantha. ‘his species (see Fig. 607) is one of about 
half-a-dozen characterised by flat, paper-like spines, and which 
form a group called Platyacantha. O. diademata and 
0. Turpinii are other members of this group. 
O. Parryi (Parry’s). jl. yellowish-green, 14in. across, borne on 
the terminal joints. Stem short; joints club-shaped, 4in. to 
6in. long, very spiny; cushions elevated on ridge-like tubercles ; 
bristles few, coarse and long; spines very. numerous, 4in. to 
sin. long, the central one broad and flattened, the rest 
triangular. Mexico. Intermediate. 
O. Piccolominiana (Piccolomini’s). Plant robust, oval-bladed, 
glaucous-green; blades thick, with cushions of short, white 
spines. This is regarded by some as a variety of O. robusta. 
O. plicatus (folded). Tree-like, and bearing long, white spines. 
O. plumosa nivea (white). This is a curious and somewhat 
remarkable plant, from the fact that it bears long, white, flat, 
papery spines, somewhat resembling wood shavings. By some 
authorities regarded as a variety of O. papyracantha. 
O. polyacantha Caueny une The correct name of 
O. missouriensis. (B. M. 7046.) The following are varieties : 
albispina, fruit ovate, spines white, bristles straw-coloured ; 
erythrostema, flowers yellow, with bright red stamens; platy- 
carpa, fruit flattened or depressed, spines few, bristles straw- 
coloured ; salmonea, flowers clear yellow at first, becoming deep 
orange and eventually salmon ; trichophora, bristles and spines 
white, the latter twisted, old joints having a hoary appearance. 
