ESPOSTOA. 



6l 



1. Espostoa lanata (HBK.). 



Cactus lanatus Humboldt, Bonpland, and Kunth. Nov, Gen. ct. Sp. 6: 6S. 1823. 



Cereus lanatus De Candolle, Prodr. 3: 464. 1828. 



Pilocereus dautwitzii Haage, Gard. Chron. 1873: 7. 1873. 



Pilocereus haagei Riimpler in Forster, Handb. Cact. ed. 2. 665. 1885. 



Pilocereus lanatus Weber, Diet. Hort. Bois 965. 1898. 



Cereus dautwitzii Orcutt, West Amer. Sci. ±3: 63. 1902. 



Cleistocactus lanatus Weber in Gosselin, Bull. Mens. Soc. Nice 44: 37. 1904. 



Pilocereus lanatus haagei Jostmann, Monatsschr. Kakteenk. 21: 25. 191 1. 



Oreocereus lanatus Britton and Rose, Stand. Cycl. Hort. Bailey 4: 2404. 1916. 



Plant simple, 2 to 4 meters high, sometimes with several strict branches or with a simple erect 

 stem, 4 to 10 cm. in diameter, with many spreading branches at first nearly horizontal or curved 

 upward and becoming erect near the tip, the tip hidden under a mass of hairs and brown bristles; 

 ribs numerous, 20 to 25, low, 5 to 8 mm. high, rounded; areolcs rather large, 5 to 6 mm. apart; radial 

 spines numerous, acicular, 4 to 7 mm. long, brownish, intermixed with long white hairs; central 

 spine solitary, yellow or brown to black, subulate, 2 to 5 cm. long; flowers borne on one side of the 

 stem from a prominent pseudocephalium, 3.5 to 5 cm. long; scales on the tube many, triangular- 

 lanceolate, acute, about 6 cm. long; fruit 3 to 4 cm. long, juicy, edible, white except the small 

 pinkish scales; seeds i mm. broad. 



Type locality: Near Rio Aranza and Guancabamba, Ecuador. 



Distribution 



Ecuador, altitude 1,200 



meters 



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to reach the 



Figs. 87 and 88.— Espostoa lanata. 



Ecuador, Dr. Rose attempted 

 •calitv of Humboldt's Cactus 



lanatus, but was unsuccessful. In the Catamay 



same 



Valley somewhat north of Humboldt' 

 in what is doubtless a part of the 

 he collected this species and upon this our descrip- 

 tion above is largely based. These plants are so 

 different in habit from other plants collected by 

 Dr. Rose in central Peru that we have been very 

 much in doubt whether they should all be referred 

 here or a part separated as a new species. That 

 there is more than one species in this genus has been 

 photograph from G. M. Dyott, taken atChagual, on th 

 in northern Peru. In this photograph are shown sevei 

 haps of this e^enus. but verv unHke any we have heretc 



r'lG. 89. — Flower of Fsix)stoa lanafa. X0.7. 

 Fig. 90. — Fruit of same. Xo.7- 



striking cactus plants, per 



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