174 



MISSOURI BOTANICAL GARDEN. 



The description is a compilation of several drawn from a 

 number of cultivated plants, together with subsequent notes 

 upon the flowers. It is named in honor of Mr. Wm. Sin- 

 clair to whom I am greatly indebted for assistance. The 

 type is No. 9003 D. G., prepared from a cultivated specimen 

 May 2, 1910. The original cuttings were secured near San 

 Antonio, Texas. — Plate 28. 



EXPLANATION OF PLATES. 



Plate 19. — Opuntia alta, from type plant. 



Plate 20.— Above, Opuntia alta, type plant. Below, O. xantho- 

 glochia, from cultivated plant. 



Plate 21. — Opuntia Gomei, from type plant. 



Plate 22. — Above, Opuntia pachona, showing a diseased spot, from 

 a cultivated seedling. Below, O. Gomei, type plant. 



Plate 23. — Opuntia lubrica, from cultivated plant grown from 

 cutting. 



Plate 24.— Opuntia nigrita, from a nearly mature plant cultivated 

 from a cutting. 



Plate 25. — Opuntia Ellisii, from a cultivated plant grown from a 

 cutting secured in cultivation at Corpus Christi, Texas. 



Plate 26. — Above, Opuntia Wootonii, in third yearVgrowth from a 

 cutting from Professor Wooton's plantation. Below, O. atrispina, 

 from Devil's River, Texas. A small plant. 



Plate 27. — Opuntia Wootonii. See upper figure in plate 26. 



Plate 28. — Opuntia Sinclairii, from a plant cultivated in the type 

 locality. 



