r 



BINGHAMIA; 



i 



! 



" 



167 



Amer. Hort. Bailey i; f. 411; Emorv. Mil 



600 



Lava 



Monatsschr 



42, 68, 



Lumholt 



10: pi. 977 a; 



J, Jamp-fircs on 



New Trails in Mex. opp. 48; 



Kakteenk. 10: 187; Bot. Wheeler Surv. frontispiece; Nat. Geogr. Mag 



World , 

 Man. Trees N. Amer 



21; 



263; Vegetationsbilder 4: pi. 40. b; pi. 41, 42; Garten-Zeitung 3:58. f. 



Amer. Des. pi. 48. ka to 'iC. m 



MacDougal 



Gard. Club 3: 17. 



Handb. Cact. ed. 2. 663. f. 88, as Pilocereus giganteus; J 



Plate XXII shows the top of a plant, brought to the New York Botanical Garden by 

 Dr. MacDougal in 1903, in flower June 1912; plate xxiii is from a photograph taken by 

 Dr. MacDougal near Tucson, Arizona. Figure 234 is from a photograph also taken by Dr. 

 MacDougal, 60 miles west of Tucson, showing a single plant; figure 235 shows the fruit 

 collected by Dr. MacDougal, near Tucson, in loos. 



/ 29. BINGHAMIA gen. nov. 



^ Bushy, more or less Branched cacti, the stout branches many-ribbed; ribs low, usually very 

 spmy; flowers white, solitary at an areole, funnelform-campanulate, opening at night, of medium 

 size, the tube straight and stout; style exserted; stamens weak and reclining on the underside of 

 tube; scales on ovary and tube small, narrow, bearing a few hairs in their axils but no spines; fniit 

 turgid, juicy, globular, crowned by the withering-persistent flower; seeds black, small. 



We recognize 2 species in this genus, inhabitants of western Peru ; it is dedicated to 

 Hiram Bingham, Director of the Yale University Expedition to Peru, 1914-1915. The 

 type species is Cephalocereus melanostele Vaupel. 



Key to Species. 



Upper areoles of the flowering plant long-bristly, bearing spines 



Upper areoles bearing acicular spines similar to those of the lower 



1. B, melanostele 



2. B, acrantha 



1. Binghamia melanostele (Vaupel). 



Cephalocereus melanostele Vaupel, Bot. Jahrb. Englcr 50: Bcibl, 



Much branched at base, the 10 to 12 branches 

 strict, usually only i meter high; ribs 18 to 22 

 (perhaps sometimes more), low, close together; 

 areoles approximate, circular, bearing short white 

 and yellow spines; spines very numerous, diverse, 

 those on sterile branches stiff and pungent, the 



hi: 12. 1913. 



Fig. 236. — Binghamia melanostele. 



Km. 237. — Binghamia acrantha. 



