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IvEMAIRKOCEREUS. 



103 



figure 2, shows the top of a plant brought by Dr. Ros'e from 



Morelos. Mexico 



Figure 152 shows the fruit of a plant from Hidalgo; figure 



from a photograph taken by him in Hidalgo, Mexico 



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SPECIES NOT GROUPED. 



4 ■ J 



LEMAiRE;oceRE;us scHUMANNii (Mathssoti) Britton and Rose, Contr. U. S. Nat. Herb. 12 : 425. 1909. 



Cereus schumannii Mathsson in Schumann, Monatsschr. Kakteenk. 9: 131. 1899. 



Plants tall and stout, 15 meters high, with few branches; ribs 8, thick and high, very obtuse, 

 somewhat pruinose ; spines 6 or 7, radial, i central, all white with brown tips ; flowers and fruit unknown . 



■ 



Type locality: Honduras. ' ' 



Distribution: Known only in cultivation. 



Little is known regarding this species and from the brief description we are unable to 

 place it definitely in our key. It may be only a form of L. griseus so widely cultivated in 

 Mexico and Central America and is near L. aragonii and possibly not specifically distinct. 



m 



LemaireocerEus sp. 



Cereus rigidispimis Monville, Hort. Univ. i: 223. 1840. 



"Erect, stout, dark green, somewhat glaucous; ribs thick, rounded; sinuses open, deep, acute. 

 Spines very strong and stiff, whitish, divaricate. Trunk 2% feet in diameter, having 7 ribs about 

 9 lines by 5 lines thick at the middle. Areoles 6 to 10 Hues apart, a little sunken, subovate, a little 

 convex, covered with a very short 

 as well as the weakest, arising from no 



all exceedingly stiff, whitish and black at the tip, sometimes 2 centrals or larger ones united along 

 their entire length. Habitat: Mexico. Flowers and fruit unknown. This plant should be placed 



In spite of its peculiar appearance, it shows some 



grayish nap, bearing 6 to 8 very unequal spines, the strongest, 

 10 particular point, 3 to 13 lines long and X to i line in diameter, 



in Cat. Monv. between Cer. hystrix and eburneus. 



similarities to them, especially to the latter." (Translated from De Monville, Hort. Univ. 



1840.) 



Mexico 



Schumann refers Cereus hildmannii Hortus (Gesamtb 



1897) here as a 



synonym. 



lyEMAIREOCE 



r 



Cereus conjormis Salm-Dyck, Cact. Hort. Dyck. 1849. 203. 1850. 



green 



gra 



spines i to 3, a little stouter than the radial; flowers and fruit unknown. 



Type locality: Mexico. _ ,. _ . 



from Mexico by Khrenberg 



1840, but 



has doubtless long since disappeared. Schumann did not know the species, but Wemgart 



(Monatsschr. Kakteenk. i^: 7Q. iQO.s) considers it identical with 



Lemaireocereus 



may 



areoles 



Lemaireocereus sp. 



Joints bright green, not at all glaucous; rib 



vals; margin of ribs somewhat crenate with the ■ . 4.- ^ .^ 



spines about 8, i to 2 cm. long; central spine usually solitary, erect or porrect, sometunes 10 cm. 



long. 



This olant was sent to the New York Botanical Garden by Dr. George F Gaumer 



as not yet flowered (New York Botani 

 from Yucatan two other plants which 



Dr. Gaumer 



unable to place. His No. 23941 has 7 ribs a 

 No. 23922 has 10 ribs and also short spines. 



numerous 



His 



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