66 



THE CACTACEAE. 



from 



numerous 



e^nrdHached; ;o^etimes short and nearly globular to narrowly oblong lo to .5 cm.^lo^^^^ 



tiihPrnilate- snines reddish normally 6 to lo, elongated, 4 to 5 cm. long, coverea witn inm, wxnue, 

 papery sheathrflowei^^^^^^^^ long, yellow ; petals 'obtuse ; ovary often bear.ng long spmes at the 

 areoles, but usually naked. 



Type locality: In Mexico. _ , ^ j -t, nui^^ 



Distribution: Highlands of central Mexico; also in Ecuador, Peru, and northern Chile^ 



,.._ 1 „„i^^ „^ii..^+^t-o otnri ctiif1pTif<? of cacti. Wc arc convinced 



Opuniia stapelia 



starved or stunted greenhouse specimens of the common 



When srown in cultivation, 0. tunicata takes on abnormal 



We 



break off easily, rarely grow to their full size. In its native home many small 



are found everywhere about the larger pla 



O. stapeliae with Mr. A. Berger, and he agrees with our conclusion. ^ „ „ , . 



No specimens of the type of 0. stapeliae are preserved in the De Cando le Herbarium 

 The plant figured as Opuntia stapelice (?) by Goebel in Pflanzenbiologische (f. 36) does not 

 belong here. It is erect, has strongly tuberculate joints, very short spines and narrow 



elongated leaves. r /-i., *-. 



Ccreus tunicatus (Pfeiffer, Enum. Cact. 170. 1837) is given as a synonym of Opuntia 



tunicata, but has never been formally taken up. ^,.11, 



We believe Opuntia hystrix Grisebach, collected by C. Wright in Cuba, belongs here, 

 probably being an escape from a garden. Dr. Rose examined the specimens in the Krug 

 and Urban Herbarium inBerhn in 191 2; the loose sheaths of the spines of these specimens 

 are now brown, while the flowers seemed a Uttle smaller than those of the Mexican speci- 

 mens. The flowers were described as red. _ . . ^ . . ,_ 



Opuntia furiosa Wendland (Pfeiffer, Enum 



Salm-Dvck refers it to his variety O. tunicata laevior (Cact. Hort. Dyck 



^ — - - - , 



1849. 73. 1850). 



J. S. Dept. Agr. 31 : pi. 4; Cact. Journ. i : October; The Gardei 

 Smiths. Inst. 1008: pi. 10, f. 5; Schumann, Gesamtb. Kakteen 



Rep. Mo. Bot. Gard. 22 : pi. 13, 14, these two as Opuntia perrita. 



Plate X, figure i, represents a joint of a plant collected by Dr. Rose near Cuzco, 

 Peru. Figure 80 is from a photograph of the same plant. 



ft 



28. Opuntia pallida Rose, Smiths. Misc. Coll. 50: 507- 1908. 



Stems 5 cm. in diameter, about i meter high, with widely spreading branches, the whole plant 

 often broader than high ; old areoles very spiny, often bearing 20 spines or more, often 3 to 4 cm. long, 

 with white, papery sheaths; young areoles bearing few spines; ovary tuberculate, the areoles 

 either naked or bearing a few bristly spines; flowers pale rose-colored; petals 15 mm. long. 



Type locality: Near Tula, Hidalgo, Mexico. 



Distribution: State of Hidalgo, Mexico. 



This species is known only from near Tula, Mexico, where it was discovered by Dr. 

 J. N. Rose in 1905, and afterwards collected near the same station by Mr. E. W. Nelson. 

 It grows interspersed with 0. imbricata, but is much lower in stature and has smaller leaves 

 and lighter-colored flowers. It is much Hke 0. tunicata, but that species has yellow flowers 



. O 



■ I 



\. 



smaller 



Herb 



from a photograph of the type specimen 



V 

 -f 



molesta 



1889. 



mly 6 dm. ! 

 sometimes 



-i 



■k"> 



4 "' 



- ■ Vj 



