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LEMAIREOCEREUS. 



89 



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This plant is certainly native in south-central Mexico, and 

 distinguishable from the related cultivated L. griscus by fewer 

 ribs, larger flowers, and ovoid fruit. 



Cereus roridus (Pfeiffer, Enum. Cact. 54. 1837) was given 

 as a synonym of Echinocactus pruinosus. 



Cereus edulis Weber (Monatsschr. Kakteenk. 10:55. 1900) 

 is another name for this species, never described. 



Illustrations: BulL Soc. Acclim. France 52 :f. i, as Cereus 

 pruinosus; Bradley, Hist. Succ. PI. ed. 2. pi. 12, as Cereus ameri- 

 canus octangularis ; Monatsschr. Kakteenk, 18: 171, in part; 21: 

 37; U. S. Dept. Agr. Bur. PL Ind. Bull. 262: pi. 8; pi. 13, f. 2; 

 MacDougal, Bot. N. Amer. Des. pi. 23; Journ. N. Y. Bot. 

 Gard. 8: f. 6, all these as Cereus eburneus. 



Figure 130 shows a fruit collected by H. H. Rusby in Fig. i.v^ — rmit of Umairco 



r\ • cereus pruinosus. Xo.7. 



Oaxaca in 1910. 



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5. Lemaireocereus (?) longispinus sp. nov. 



Erect, rather stout, light green, the young growth more or less glaucous; ribs 6, broad at base, 

 somewhat acute, more or less undulate; areoles borne at the tops of the undulations; radial spines 

 about ID, spreading or even reflexed, acicular; central spine elongated, porrect, flattened above, up 

 to 8 cm, long, gray; flowers and fruit unknown. 



F. Eichlam in Guatemala in 1909. 

 from a photosfraph of the type specimen 



Botanical Garden. 



6. Lemaireocereus eichlamii nom. nov. 



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Cereus laevigatus guatemalensis Eichlam in Weingart, Monatsschr. Kakteenk. 22: 182. 1912. Not C. 

 guatetnalensis Vaupel. 



Cylindric; simple in cultivation, deep green except for narrow glaucous bands showing the 

 commencement of new growth; ribs 8 to 10, rather broad and rounded, with acute mtervals between; 



gray; s 



:m. Ion J 

 gments 



greenish 



tube 



surface covered with stamens ; filaments unequal, white, numerous ; style slender, white below, orange 

 above, included; ovary tuberculate, each tubercle crowned by a mmute scale; areoles on the ovary 

 bearing brown felt but no spines. * .... 



Typ 

 Dist 



Guatemala 

 Guatemala. 



Illustration: Monatsschr. Kakteenk 



iiLu^i^ruiion: ivxuuaLbbtjiu. x^cirwL^^**^- *--• ^^^y — -- *^ * 1 r^ ^ 



Figure 132 shows a plant in the collection of the New York Botanical Garden. 



7. Lemaireocereus chichipe (Gosselin). 



Cereus chichipe Gosselin, Bull. Mus. Hist. Nat Paris "= 507- 

 Cereus mixtecensis J. A. Rirpus, Monatsschr. Kakteenk. 19. 52- 



1905. 

 1909 



Lemaireocereus mixtecensis Britton and Rose, Contr. U. S. Nat. Hcrlx 12: 425. 1909. 



Tree-like, up to 5 meters high, with a short trunk 8 to 10 dm in f iameter and a large ver^, 

 much branched top; branches 9 to 12-ribbed, undulate, acutish, 2 cm. high, areoles i to 1.5 cm. 







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