LEMAIRIiOCEKEUS. 



93 



times 5 to 6 cm. long; areoles i to 2 cm. apart; flowers appearing at or near the top of the plant, 

 red, small, narrowly campanulate, about 4 cm. long; ovary bearing small scales subtending wool 

 and bristly spines; fruit red, spiny, globular, about 3 cm. in diameter; spines deciduous; seeds dull, 

 pitted. 



Type locality: Mexico. 



Distribution: Southern Mexico. 



The fruit is known in the markets as joconostle and sometimes as tuna. 



The above description is drawn from Dr. Rose's specimens, which seem to represent 

 L. stcllatus, but the identification has not been confirmed by reference to the type specimen. 



Cereus joconostle Weber (Schumann, Gesamtb. Kakteen 79. 1897) is known only as a 

 synonym of this species. 



FIG. 135. Lemaireocereus aragonii. 



Illustrations: Contr. U. S. Nat. Herb. 10: pi. 20; Rep. Mo. Bot. Card. 16: pi. 3, f. i 

 to 4; U. S. Dept. Agr. Bur. PI. Ind. Bull. 262: pi. 12, as Cereus stcllatus; Bull. Soc. Acclim. 

 France 52: f. 3, as Cereus dyckii; Contr. U. S. Nat. Herb. 12: pi. 69. 



Figure 136 is from a photograph taken by Dr. MacDougal at Tomellin, Mexico, in 1906. 



12. Lemaireocereus treleasei Britton and Rose, Contr. U. S. Nat. Herb. 12: 426. 1909. 



Cereus treleasei Vaupel, Monatsschr. Kakteenk. 23: 37. 1913- 



Plant 5 to 7 meters high, simple or with a few strict branches; ribs about 20; areoles approxi- 

 mate with a peculiar V-shaped depression just above each one; spines rather short, yellowish; 

 flowers pinkish, 4 to 5 cm. long, diurnal; scales on ovary and flower-tube subtending slender whitish 

 bristles; fruit red, about 5 cm. in diameter, covered with clusters of deciduous spines; seeds black 

 with a dull, rugose surface and a large oblique basal hilum. 



