7O THE CACTACEAE. 
. . . ; ; or 
central spine solitary, 10 cm. long or less, ascending, somewhat curved, the upper ones more 
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. ror). 
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 
Fic. 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. 
Shafer at Trancas, Argentina, in 1917; 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. 
Fic. 89.—Echinopsis shaferi. 
SO 
