I^ 



v^ 



''?^ 



', 



' 



J h 



- * 



\- 



'r 



n 1 



\ ^-' 



- \ 



■■-r , 





It 



-■V 



■ J 



OPUNTIA. ^ 159 



OpunTia assumptionis Schumann, Monatsschr. Kakteenk. 9: 153. 1899. 



Erect, I meter high; joints obovate, narrowed at base, thickish; spines at areoles on the faces 

 of the joints none, but on the edges i or 2, stout, subulate, the upper one stouter, 3 lo 4.5 cm. long; 

 flower 3.5 cm. long, lemon-yellow; fruit pear-shaped, with a deep umbilicus; seeds densely villous. 



Type locality: Ascuncion, Paraguay. 

 Distribution: Known only from the type locality. 



Opuntia cantErai Arechavaleta, Anal. Mus. Nac. Montevideo 5: 278. 1905. 



r 



Stems erect, branching, 5 to 10 dm. high; joints elongated, shining green, attenuate below, 

 15 to 20 cm. long, 4 to 6 cm. broad; areoles orbicular, when young each surrounded by a violet 

 spot, mostly spineless, about 4 cm. apart; spines, when present, i or 2 from an arcole, 1.5 to 2 cm. 

 long, whitish, with brownish tips; flowers orange-colored, 4 to 4.5 cm. broad; stigma-lobes 6 or 7, 

 light flesh-colored; fruit somewhat pear-shaped, 5 cm. long;. seeds flattened. 



Type locality: In Uruguay. vi«^ » -* 



Distribution: Along the coast oi Vruguay. 



T„ TT , 4-u:^ ^ — :^^ fl^,.r^^«- ;« January and Feb- v^^^^jjt:^ ^ * 



ruary . ^^ -WM- 'ki, " 4 - '^ •' 



Series 14. SCHEERIANAE. . vi^ -4l^^.l? \ -iter . „ :K J-x 



A single bushy species, with broad, thin, persistent joints, the '^Mi*J-^^^^)r '\ ' ^0 * 

 areoles close together, each bearing several yellow, acicular W^^Jf^ ./^''"^ 

 spines and long white or yellow hairs. Its home is unknown. W^^^-^.~4 



170. Opuntia scheeri Weber, Diet. Hort. Bois 895. 1898. "|^|C^^ji^^\^' ^ " 



' About I meter high, branching at base, the lower branches M^^^^^F ^f^\7i''M^^ ^'' **" 



sprawling over the ground; joints oblong to orbicular, 1.5 to 3 '^l^^%s^gT^ 



dm. long, bluish green; areoles circular, elevated, filled with ^r^|fe':^J*j^^^ 



short brown wool; spines 10 to 12, yellow, acicular, each sur- ' ^^^^^^iff M^t^-^y^...^ 



rounded by a row of long white or yellow hairs; flowers large, 'W'MWmb'jf 

 pale yellow, but in age salmon-colored; stigma-lobes deep 

 green; fruit globular, red, juicy, truncate; seed small, 4 mm. 

 broad, with a broad irregular margin. 



Type locality: In Mexico. 



Distribution: Mexico, but knov^rn to us only from fig. 198.— Opuntia schecri. X0.5. 



cultivated specimens. ^ , j 1 1. • a 



• This is a very beautiful species, covered as it is by yellow spines and long hairs. A 

 fine plant is growing in the open at La Mortola, Italy. The seedhngs produce a long mass 

 of soft white hairs almost covering the joints and giving an appearance very different from 

 the adult plant. In this young stage, according to Mr. Alwin Berger, they readily pass 



for Opuntia senilis (O. crinifera). ,r i. i t* i :« r^^r-. 



Figure .98 represents a joint from a specimen sent from La Mortola, Italy, m 19.2. 



Series 15. oaLENIANAE. 



Mostly bushy or tall species, with ^^;/^^°^^ ^^^^i^^S. TpcctcsTs 

 ro~^ ?h:™ >::, tr^ry ^r h^Xe„les" i?:f The p>a„t, J.^. the southern Uni.od 

 States, the West Indies, Mexico, and northern South America. 



Key to Species. 



171.0. chlorolka 



Spines nearly setaceous, most of them reflexed 



Spines, when present, acicular to subulate. oror.i<.c or .;niiu-s vcrv short. 



Joints spineless, or with only i or 2 spines at some of the areoles, or spmcs ver> 



Corolla rotate; petals yellow. . .. \-]2. 0. laevis 

 Plant tall; spines, when present, 2 '^'n-^f^^ or less. • • ... ^. • • • ^^ ^^^ ^ .^^^ 



Plant depressed, bushy or spreadmg; spmes, wlicn presem, 11 / ^ ^^^ ^ keyensts 



Corolla cup-shaped; petals salmon „■•„„,;; fiiparenies 



Joints usually manifestly spiny; spines mostly 2 or more at the areoies. ^ ^^ ^ ^.^^^^ .. 



Spines mostly stout, commonly flattened ... • • • •;•;•• v:^^ wp' 

 Spines acicular to subulate, terete, or slightly flattened at the base. 





