l82 



THE CACTACEAE. 



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201. 



ipinulifera 



1834. 



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Opuntia candelahriformis Martius in Pfeiffer, Enum. Cact. 159. 

 Ot>imiia olimcantha Salm-Dvck. Cact. Hort. Dvck. 184Q. 241. 



T837 

 1850. 



Tall, much branched plants; joints orbicular to oblong, sometimes obovate, 20 to 30 crii. long, 

 glabrous, a little glaucous; leaves small, red, 4 to 6 mm. long; areoles on young joints usually small, 

 sonietiiues longer than broad, the margin at first bordered with cobwebby hairs, afterwards short 

 white hairs, either spineless or with short white bristle-like spines ; areoles on old joints more or less 

 sunken, rather close together; spines on old joints i to 3, i to 2 cm. long, subulate, bone-colored. 



Type locality: In Mexico. \ V / ; - 



DisinbuHon: Mexico. 



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We have seen no wild specimens of this species, but Mr.'Berger has grown it at I^a 

 Mortola, Italy, and has distributed specimens now growing in New York and Washington. 



So-called Opuntia candelahriformis and O. 

 oligacantha are also in cultivation; but the 

 original descriptions indicate that these two 

 species should be merged into O. spinulifera, 

 and plants so determined in European collec- 

 tions support this view. In so far as we have 

 been able to ascertain, no type specimens of 

 any of the three supposed species are extant. 

 Schumann (Gesamtb. Kakteen 740. 1898) de- 

 scribes the flowers of 0. candelahriformis as 

 purple, 6 to 7 cm. broad^ , Opuntia candela- 

 hriformis ngf^/zor Salm-Dyck (Cact. Hort. Dyck. 

 1849. 68. 1850), an unpublished variety, may 

 belong here. 



Figure 221 represents a joint of a plant 

 presented to the New York Botanical Garden 

 by Mrs. George Such in 1900! ^ > 



\ 



202. Opuntia lasiacantha Pfeiffer, Enum. Cact. 160. 



1837^ 



Opnnfia megacantha lasiacantha 

 Jahrb. Engler 36: 453. 1905. 



Bcrger, Bot. 



Fig. 221. — Opuntia spinulifera. X0.4. 



A tall plant, with a more or less definite trunk; joints obovate to oblong, 20 to 30 cm. long; 

 leaves short, red; areoles small, 2 to 3 cm. apart; spines usually i to 3, acicular, white, 2 to 4 cm. 

 long, slightly spreadmg; glochids numerous, prominent, dirty yellow to brown; flowers large, yellow 

 or deep orange, 6 to 8 cm. broad; ovary bearing long, brown, deciduous bristles, especially from 

 the upper areoles; style pinkish; stigma-lobes pale green. 



Type locality: In Mexico 



Distribution 

 Schumann 1 



Mexico 



living plants show. Pfeiffer said 



pinulifi 



candelahrif 



under 



* T 



Mr 



very 



seems distinct from 



Opuntia chaeiocarpa Griffiths (Proc, Biol. Soc. Washington 27: 25. 1914), in its few 

 long white spines, resembles plants collected by Dr. Rose in southern Mexico which we 

 have referred to this species. 



Illustration: Addisonia 3: pi, 90. 



Plate XXXIV, figure 3, represents a flowering joint of a plant collected by Dr. Rose near 



Mexico 



Mexico, in 



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