9 6 



Till- CACTACKAIC. 



'I'his plant is called cardon and candcbobe. 



U3 belieuli and ( '. fui^iiniilcr are two garden names referred here by Schumann 

 (Gcsamtb. Kakteen 107. 1897). 



Illustrations: Contr. U. S. Nat. Herb. io:pl. 21; MacDougal, Bot. N. Amer. Des. 

 pi. 21 ; Nat. Geogr. Mag. 21: 705; Journ. Intern. Card. Club 3: 16; U. S. Dept. Agr. Bur. PI. 

 Ind. Bull. 262: pi. ii, all as Cereus wcbcri; vSchelle, Handb. Kakteenk. f. 37; vSchumann, 

 (U-saintb. Kakteen f. 24; Mollers Deutsche Gart. Zeit. 29: 352. f. 7; 353. f. 8, as Cereus 

 candelabrum; Contr. U. S. Nat. Herb. 12: pi. 71. 



Figure 139 is from a photograph taken by Dr. Rose at Tomellin, Mexico, in 1905; 

 figure 140 shows clusters of spines and figure 141 a fruit collected by H. H. Rusby at 

 Cuicatlan, Oaxaca, in 1910. 



FIG. 138. Lcrnaireucereus deficiens. 



FIG. 139. Lemaireocereus weberi. 



15. Lemaireocereus queretaroensis (Weber) Safford, Ann. Rep. Smiths. Inst. 1908: pi. 6, f. 2. 1909. 



Cereus queretaroensis Weber in Mathsson, Monatsschr. Kakteenk. i: 27. 1891. 

 Pachycerciis queretaroensis Britton and Rose, Contr. U. S. Nat. Herb. 12: 422. 1909. 



Plant 3 to 5 meters high, with a short woody trunk, much branched above ; ribs 6 to 8, prominent, 

 obtuse; areoles about i cm. apart, large, brown-woolly, very glandular; spines 6 to 10, at first red, 

 becoming grayish in age, acicular, rather unequal, sometimes only 15 mm. long, at other times 5 cm. 

 long; flowers 7 to 8 cm. long; ovary with many woolly areoles subtended by ovate scales 2 mm. long 

 or less; fruit spiny, edible. 



Type locality: Oueretaro, Mexico. 



Distribution: Central Mexico. 



This species was formerly referred by us to the genus Pachycercus, but it has since been 

 learned that the fruit is not dry, but juicy and edible, and therefore the plant is more prop- 

 erly a Lemaireocereus. Its peculiar glandular areoles are like those of L. thurberi, although 

 otherwise the two species are quite different. This plant is said to be cultivated in Jalisco 

 and Oueretaro, Mexico, doubtless for its edible fruits, which are also called pitahaya. We 

 have had the plant in cultivation in Washington since 1907, but it has made little or no 

 growth. 



