. Carnegie Institution of Washington publication. 48 TIM; UACTACKAK. 30. Cephalocereus chrysacanthus (\Vcber) Hritton and Rose, Coutr. I'. S. Nat. Herb. 12:416. 1909. 1'ilmi-r,-us fliryniuintliKS \Vulicr in Srliumunn, Gt/samtb. Kakti-i-n i-S. 1897. i reUS ilirysiiiiiHllnis Orcutt, \\Yst Amur. Si'i. 13: (13. 1902. Unit 3 to s mclcrs high, branching near the base; branches ereet or ascending, glaucous; ribs about i-1: areolcs about i cm. apart; spines 12 to 15, the longer ones 3 to 4 cm. long, at first golden yellow, becoming darker in age; flowers borne in definite zones on one side of the bran
. Carnegie Institution of Washington publication. 48 TIM; UACTACKAK. 30. Cephalocereus chrysacanthus (\Vcber) Hritton and Rose, Coutr. I'. S. Nat. Herb. 12:416. 1909. 1'ilmi-r,-us fliryniuintliKS \Vulicr in Srliumunn, Gt/samtb. Kakti-i-n i-S. 1897. i reUS ilirysiiiiiHllnis Orcutt, \\Yst Amur. Si'i. 13: (13. 1902. Unit 3 to s mclcrs high, branching near the base; branches ereet or ascending, glaucous; ribs about i-1: areolcs about i cm. apart; spines 12 to 15, the longer ones 3 to 4 cm. long, at first golden yellow, becoming darker in age; flowers borne in definite zones on one side of the branch, accom- panied by dense masses of long white hairs, nocturnal, 7 to 8 cm. long, rose-red; fruit smooth, reddish or purplish, about 3 cm. in diameter, the flesh red; seeds black. 7'r/v luiLiIily: Near Tehuacan, Mexico. : Puebla and Oaxaca, Mexico. MacDougal, Amer. Des. pi. 17, in part, asPilocereuschrysacanthus; Moilers Deutsche Gart. Zeit. 29: 356, f. 12. Plate vn, figure 2, is from a photograph taken by Dr. MacDougal near Esperanza, Mexico, in 1906. 31. Cephalocereus maxonii Rose, Contr. U. S. Nat. Herb. 12: 417. 1909. Ccrcus maxonii Yaupel, Monatsschr. Kakteenk. 23: 23. 1913. Plant 2 to 3 meters high, with few long branches, erect or nearly so, in mature plants the tops of the branches for about 30 cm. clothed with white hairs 4 to 5 cm. long; ribs 6 to 8, acute, pale blue and somewhat glaucous; areoles small; spines about 10, slender, yellow, the central single, 4 cm. long, all nearly hidden in flowering areoles by the long white hairs; flowers purple, 4 cm. long; ovary naked except for a few small scales; fruit cm. broad, broader than high; seeds brownish, reticulate, with an oblique basal '. ;i -Cephalocereus maxutiii. Type locality: Near El Rancho, Guatemala. I'i^rihntion: Guatemala. This species, although discovered only a few years ago, has been repeatedly collected since and is now to be found in living collections. It is called organo in Guatemala
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