BINGHAMIA. 



167 



Amor. Hort. Bailey 1: 1". 413; Emory, Mil. Rcconn. pi. opp. 72; PI. Stir. 10: pi. 977 a; 

 15: pi. 1600; Gard. Chron. III. 45: f. 69; Gartenflora 31:217; Hornaday, Camp-fires on 

 Des. and Lava opp. 42, 68, 72, 82, 154; Lumholtz, New Trails in Mex. opp. 48; 

 Monatssckr. Kakteenk. 10: 187; Bot. Wheeler Surv. frontispiece; Nat. Geogr. Mag. 21: 

 711; Orcutt, Caet. 5; Plant World 9:f. 46; n r ':f. 2; 11 '":f. 2 to4;Rumpler, Sukkulenten 

 f. 63 ; .Sargent, Man. Trees N. Amer. f. 558 ; Diet. Gard. Nicholson Suppl. f. 231 ; Garden 1 : 

 263; Vegetationsbilder 4: pi. 40. b; pi. 41, 42; Garten-Zeitung 3:58. f. 15; MacDougal, 

 Bot. N. Amer. Des. pi. 48, 54 to 56, mostly as Cereus giganteus; Nat. Geogr. Mag. 27: 85, 

 as Cactus; Forster, Handb. Cact. ed. 2. 663. f. S8, as Pilocereas giganteus; Journ. Intern. 

 Gard. Club 3: 17. 



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 1905. 



29. BINGHAMIA gen. nov. 



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

 spiny; 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; fruit 

 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. Binghamia melanostele (Vaupel). 



Cephalocereus melanostele Vaupel, Bot. Jahrb. Engler 50: Beibl. hi 

 Much branched at base, the 10 to 12 branches 

 strict, usually only 1 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 



B. melanostele 

 B. acrantha 



Fig. 236. — Binsjhamia melanostele. 



Fig. 237.— Bingt 



