2I 4 



THE CACTACEAE. 



Figure 275 is from a photograph of part of the original collection as grown by Dr. E. 

 Chaff ey, taken and contributed by Senor Don Teodoro Chairez, of Ciudad Lerdo, Mexico ; 

 figure 276 is from a photograph of the type showing the large root and the young shoot. 



As stated in the original description, this is a remarkable Opuntia, being the only one 

 known which has an annual stem. In cultivation, where the plant is grown under abnor- 

 mal conditions, the stem persists for more than a year; but Dr. Chaffey assures us that in the 

 desert, where the species grows naturally, the stem dies down to the ground in the dry 

 season. We have had it in cultivation since 1910, but it does not do well, and is gradually 

 dying out. It has not been found in flower in a wild state, but it flowered with Dr. Chaffey 

 at Ciudad Lerdo, Durango, Mexico, in 1915. Dr. Chaffey, who has been studying this spe- 

 cies for several years, has made a number of interesting observations; he states that the 

 large base, which usually is found 15 to 20 cm. beneath the surface of the ground, when 

 allowed to grow above the ground develops clusters of spines like those on the normal 

 stems, and finds that the plant is easily started from cuttings which soon develop the 

 normal, large, underground part. He further states that the desert turtle eats this plant. 

 It is well known that the Galapagos turtles feed upon the native opuntias of those islands. 



The native name of this plant is sacacil. 



The following described Opuntias we have been unable to refer to any of the species 

 otherwise mentioned in this work : 



Opuntia bicolor Philippi, Linnaea'33: 83. 1864. 



glaucophylla Wendland, Cat. Hort. Herrenh. 1835. 



laevior Salm-Dyck, Cact. Hort. Dyck. 1844. 46. 1845. 

 longiglochia C. Z. Nelson, Galesburg Register. July 20, 1915. 

 Inciila Hortus, Wiener Illustr. Gartenz. 14: 146. 1889. 

 prostrata spinosior Schumann, Gesamtb. Kakteen 723. 1898. 

 spinaurea Karwinsky in Salm-Dyck, Cact. Hort. Dyck. 1844. 46. 1845. As synonym for O. 



pseitdoluna elongata Salm-Dyck. 

 tubercnlala Haworth, Suppl. PI. Succ. 80. 1819, first described as Cactus tuberculatus (Enum. 



Hort. Berol. Suppl. 34. 1813). 



The following names of Opuntia are chiefly found in catalogues or in lists, or have 

 been so briefly described that we have not been able to identify them, and it does not seem 

 worth while even to cite the places where they first occur in literature : 



Opuntia alpicola Schumann 

 americana Forbes 

 attulica Forbes 

 barbata K. Brandegee 

 barbala gracillima K. Brandegee 

 bernhardinii Hildmann 

 betancourt Mnrillo 

 calacantha 

 calacantha rubrn 

 Carolina Forbes 

 ciliosa Forbes 

 consoleana Todaro 

 consolei Haage and Schmidt 

 demorenia Forbes 

 demoriana Forster 

 deppei Wendland 

 dichotoma Forbes 

 eborina Forster 

 erecla Schumann 

 /estiva Sencke 



ficus-indica alhispina Haage and Schmidt 

 flavispina Forster 

 lievernickii Hildmann 

 hitchcnii Forbes 

 italica Tenore 



joconoslle Haage and Schmidt 

 jussieuii Haage 

 leucostata Forbes 

 macrophylla Haage and Schmidt 



Opiinlia niissouriensis elongata Salm-Dyck 



erythrostemma Haage and Schmidt 

 salmonea Haage and Schmidt 



montana Sencke 



morenoi Schumann 



myriacantha Link and Otto. Not Weber 



ottonis Salm-Dyck 



pachyarthra flava Haage and Schmidt 



pachyclada rosea Haage and Schmidt 

 spaelhiana Haage and Schmidt 



parole Forbes 



piccolomini Hort. 



platyclada Haworth 



praecox Forbes 



prolracta Lemaire 



elongata Salm-Dyck 



pseudococcinelltfer Bertoloni 



pseitdotuna Salm-Dyck 

 elongata Salm-Dyck 

 spinosior Salm-Dyck 



pulvcrata Forster 



re plans Karwinsky 



sal mii Forbes 



schomburgkii Salm-Dyck 



speciosa Steudel 



spinuliflora Salm-Dyck 



spinulosa Salm-Dyck 



stratninea Sencke 



strifta spiinilescens Salm-Dyck 



siibineriiiis Link 



