70 



THE CACTACEAE. 



central spine solitary, 10 cm. long or less, ascending, somewhat curved, the upper ones more or 

 less connivent over the top of the plant; flower slender, funnelform, 2 dm. long, white; filaments 

 and style pale green; fruit ovoid, 3 cm. long, brick-red. 



Collected by J. A. Shafer in sandy thickets, Trancas, Tucuman, Argentina, February 

 11, 1917 (No. 101). 



This is the largest species of the genus known to us. It flowered at the New York 

 Botanical Garden in June 1920. In the new growth the top is very woolly. The top 



Fig. 88. Echinopsis spegazziniana. 



of the growing plant is covered with a mass of brown wool arising from the closely set 

 young areoles. 



John Adolph Shafer (1863-1918), an enthusiastic 

 botanical collector, was commissioned by Dr. Britton 

 to visit Argentina in the winter of 1916-1917 and he 

 obtained plants and specimens of great importance 

 in our studies of the cacti. 



Figure 89 is from a photograph taken by Dr. 

 vShafer at Trancas, Argentina, in 191 7; figure 87 shows 

 the fruit of the plant photographed. 



18. Echinopsis fiebrigii Giirke, Notizbl. Bot. Gart. Berlin 4: 

 184. 1905. 



Stems simple, depressed-globose, 9 cm. high, 15 cm. 

 broad; ribs 18 to 24, strongly crenate, broken into long 

 tubercles, 1.5 cm. high; radial spines 8 to 10, 10 to 25 mm. 

 long, recurved; central spine one, curved, ascending; flowers 

 17 to 19 cm. long, the tube nearly cylindric; outer perianth- 

 segments green, spreading; inner perianth-segments white, 

 short, broad, obtuse or truncate ; filaments white ; style green ; 

 stigma-lobes 11, green, 15 to 17 mm. long. 



Type locality: Bolivia. 

 Distribution: Bolivia. 



The plant is known to us only from description 

 and illustrations. 



