OPUNTIA. 



123 



yellow to orange, 4 to 5 cm. long including the ovary; petals obovate, 2 to 2.5 cm. long; filaments 

 greenish white, short, i cm. long; style 1.5 cm. long, thick, bulbous just above the base; stigma- 

 lobes 5, deep green; ovary globular, 1.5 cm. in diameter, umbilicate, with large areoles; fruit, accord- 

 ing to field observation of Dr. Griffiths, bright red. 



Type locality: About Presidio del Norte, on the Rio Grande. 

 Distribution: Texas and northern Mexico. 



This species seems much less common than 0. microdasys, with which it is often con- 

 fused. The joints are gray or bluish green, and the glochids are brown. It does fairly well 



under greenhouse conditions. 



Illustration: Rep. Mo. Bot. Gard. 20; pi. 3; Carnegie Inst. Wash. 269: pi. 11, f. 94. 



Figure 153 is from a photograph of a plant brought from Mexico for the New York 

 Botanical Garden in 1896 by Mrs. N. I/. Britton. 



Fig. i54.-Opuntia pycnantha. Along the coastal plain of Lower California. 



pycnantha Kngel 



1896. 



4 



Opuntia pycnantha margaritana Coulter, Contr. U. S. Nat. Herb. 3: 424- 



1896. 



Often low and creeping, but sometimes forming a clump 2 dm. Jjf /, j^^^^^^^^^J^f^^^eT-^i;::^^^^^ 

 often 20 cm. long, puberulent or papillose, usually nearly hidden ^7 the ^^^^^^, ^ jl^^^^^ 



large and closel/sel the upper part filled with ye^^w ^ ^^^^^^^^^^ "^ fc- long' 



to 12 yellow or brown reflexed spmes 2 to 3 cm. long, leaveb duu iiwv> 



trry,~., ; J_ 1 i *-'W,n'\:r 



Type locality: Magdalen 



Dist 



Southern Lower California 



from Margarita 



from an adjacent island, Magdalen 



They diflfer only in the color 



glochids 



Both have been in cultivation in New York City and Wash- 

 ington but are not Vu suited for indoor pl»^^ „„ i^,^„^, „h„, there 



This species grows m one of the dnest partb ui xvyw ,,parc 



is no surface water and where there is no rain sometimes for ^^ Jf ^y^f^'g ^aeda- 



Figure 154 is from a photograph taken by Dr. Rose near Santa Mana Bay, Magda 



lena Island, Lower California, in 191 1. 



