74 THE CACTACEAE. 
23. Echinopsis molesta Spegazzini, Anal. Mus. Nac. Buenos Aires III. 4: 490. 1905. 
Plants simple, subglobose, 20 cm. in diameter, pale green, not shining; ribs 13, prominent, acute 
on edge and somewhat undulate; areoles large; spines all grayish, rather stout; radial spines 6 to 8, 
straight, 10 to 15 mm. long; central spines 4, bulbose at base, slightly incurved, the lower one the 
longest, 3 cm. long; flowers slightly odorous, large, 22 to 24 cm. long; inner perianth-segments lanceo- 
late, white; stamens, style and stigma-lobes white. 
Type locality: Province of Cérdoba, Argentina. 
Distribution: Cérdoba, Argentina. 
This species is known to us only from description. 
24. Echinopsis baldiana Spegazzini, Anal. Mus. Nac. Buenos Aires III. 4: 490. 1905. 
Stems simple, cylindric, 2 to 3 dm. high, 12 to 15 cm. in diameter; ribs 13 or 14, not all crenate; 
areoles large; spines slender, blackish brown; radial spines 9 to 11, 15 mm. long; central spines 3 or 4, 
3 to 5 cm. long; flowers odorous, very large; inner perianth-segments lanceolate, acute, white; fruit 
large, 4 to 5 cm. long. 
Type locality: Near Ancasti, province of Catamarca, Argentina. 
Distribution: The dry mountain regions of the province of Catamarca, Argentina. 
This species is known to us only from description. 
25. Echinopsis aurea sp. nov. 
Plants solitary, small, globular to short-cylindric, 5 to 10 cm. high; ribs 14 or 15, acute on the 
edge, separated by deep intervals; areoles when young filled with short brown wool; radial spines about 
10, 1 cm. long; central spines usually 4, much stouter than the radials, often flattened, 2 to 3 cm. long: 
flowers from the side of the plant; flower-tube slightly curved, funnelform, greenish white, its scales 
ovate-linear, 4 to 6 mm. long, pale green but reddish at base, their axils filled with black and white 
hairs; flower-bud 9 cm. long, when young covered with long silky hairs; expanded flower 8 cm. broad, 
the perianth-segments in about 3 series, lemon-yellow, the inner ones deeper colored, about 20. 
oblong, mucronately tipped; filaments in 2 series, the upper series attached at the top of the throat, 
stiff and erect, exserted; the lower series inserted near the base of the throat, included; style green, 
very short and included, only 3 cm. long; stigma-lobes linear, cream-colored; scales on ovary small, 
their axils filled with long hairs; fruit not known. 
Collected by Dr. Rose near Cassafousth, Cérdoba, Argentina, in 1915 (No. 21046) 
and flowered in the New York Botanical Garden, May 6, 1916. 
Plate x, figure 1, shows the plant in flower. 
26. Echinopsis bridgesii Salm-Dyck, Cact. Hort. Dyck. 1849. 181. 1850. 
Echinocactus salmianus Cels, Protef. Hort. 180. 1847. Not Link and Otto, 1827. 
Echinopsis salmiana Weber, Dict. Hort. Bois 472. 18096. 
C ereus salmianus Cels in Weber, Dict. Hort. Bois 472. 1896, as synonym. 
Echinopsis salmiana bridgesii Schumann, Gesamtb. Kakteen 237. 1897. 
Plants usually in clumps of 3 to 6, low, 1 dm. in diameter or more; ribs 10 to 12, high, not undu- 
late; areoles large, filled with spines and short brown wool; spines about 10, brown when young, 
unequal; flowers 15 to 18 cm. long, probably white; tube slender, about the length of the limb; inner 
perianth-segments 3 to 4 cm. long, acute; scales on the ovary and flower-tube filled with long gray and 
black hairs. 
Type locality: Bolivia. 
Distribution: Bolivia. 
The species was originally described from barren specimens. We believe that we 
have its flowers in the specimens collected by Mr. Bang. Plants were collected by 
Miguel Bang near La Paz, Bolivia, in 1890 (No. 176) and at the same locality by 
J. N. Rose, August 11, 1914 (No. 18844), also by Mr. Bang near Cochibamba, Bolivia, 
in 1901 (No. 2051). Dr. Rose’s plant was without flower and its reference here is only 
tentative, but the habit of the plant was clearly that of the cespitose species of Echinopsis. 
Schumann, who studied Bang’s plant, compared it with Cereus pasacana (see Cactaceae 
