206 
THE CACTACEAE. 
Echinocactus intricatus Link and Otto, Verh. Ver. Beford. Gartenb. 3:428. 1827. 
Melocactus intricatus Link and Otto, Verh. Ver. Beford. Gartenb. 3: pi. 24. 1827. 
Ovoid, 10 cm. high, green; ribs 20, obtuse; radial spines 14 to 16, spreading, 8 mm. long; central 
spines 4, stouter than the radials, 16 mm. long; flowers and fruit unknown. 
The plant is said to have come from Montevideo and to have been collected by Sellow. 
Echinocactus weingartianus Haage jr. in Quehl, Monatsschr. Kakteenk. 9: 73. 1899. 
Short-columnar, rounded above; crown lightly tubercled, with sparse wool, exceeded by 
the upright spines, but can be seen, 8 cm. high by 5.5 cm. in diameter, bright green when young, 
later turning gray; ribs 13, straight, separated by sharp furrows, about 1 cm. high, divided into 
tubercles, broadening out with age; areoles 10 to 12 mm. apart, very large, covered with yellow¬ 
ish, curly wool turning gray and finally disappearing; radial spines 5 to 10, of various sizes, when 
young brownish black on the tips and base, horn-colored in the middle, more or less upright, later 
becoming white, more spreading; central spines up to 4, upright, when young a few ebony-black, the 
rest shading into the color of the radial spines, the uppermost and stoutest always black, up to 
3 cm. long, bent above; flowers (according to traces) numerous in the region of the crown; seeds small, 
kidney-shaped, dark grayish brown, tubercled. 
Distribution: Argentina. 
Echinocactus sanjuanensis Spegazzini, Anal. Mus. Nac. Buenos Aires III. 4: 501. 1905. 
Nearly globose, 8 to 9 cm. in diameter; ribs 13, rather broad and low, strongly tubercled; 
areoles nearly circular, prominent, 4 mm. in diameter; spines 15 to 19, slender, rigid, 1 to 2.5 cm. 
long, at first rose-colored, becoming in age blackish. 
Type locality: Province of San Juan. 
Distribution: Western Argentina. 
We know this species definitely only from the original description and a photograph 
obtained by Dr. Rose in 1915 from Dr. Spegazzini. 
Echinocactus rotherianus Haage jr. in Quehl, Monatsschr. Kakteenk. 9: 74. 1899. 
Simple, slender, crooked, up to 26 cm. high and 5 cm. in diameter near the crown, constricted 
below; crown somewhat sunken and somewhat woolly, exceeded by the central spines of the new 
areoles; ribs 23, straight, separated by sharp furrows about 5 cm. deep, tubercled; tubercles slightly 
bent downward and bearing areoles, bright olive-green; areoles 5 mm. apart, naked; radial spines 
about 10, radiating, the lateral longer than the upper and lower, up to 5 mm. long, bright amber in 
color; central spines about 4, upright, stouter and longer (up to 10 mm.) than the radial spines, 
thickened at the base, reddish when young, otherwise colored like the radial spines; later all the spines 
bending downward and mixing together; these stiff, brittle, and finally disappearing, leaving the 
body naked; flowers unknown. 
Type locality: Paraguay. 
The following descriptions are translated from Fries who described three plants which 
he referred to Echinocactus but gave no specific names. They are evidently better referred 
to Malacocarpus or to some other South American genus. 
“Echinocactus sp. 
“Prov. Jujuy; in rocky places in Yavi, 3,400 m. alt. 
“Spherical, up to 1 dm. high; ribs 13, more or less divided into conical tubercles; radial 
spines about 8, directed obliquely outward, 3 to 3.5 cm. long; central spine 1, stouter, projecting 
straight outward, 3 to 8 cm. long, twisted-round, crooked above; flowers collected on the summit, 
2.5 to 3 cm. long, with thick wool on the outside.” (Fries, Nov. Act. Reg. Soc. Upsal IV. x: 121. 
1905-) 
“Echinocactus sp. 
“Prov. Jujuy; in rocky places at Moreno, 3,500 m. alt. 
“Plant 2 to 3 dm. high, 1 to 2 dm. in diameter, short-cylindric; ribs about 30, plainly divided 
into tubercles; areoles covered with thick wool; spines up to 17, bent outward, up to 5 cm. long, 
stiff, twisted, straight; the areoles on the summit are spineless; the flowers are 5 to 10 cm. from 
the growing point, are 4 to 5 cm. long, are covered with thick wool; petals reddish brown.” (Fries, 
Nov. Act. Reg. Soc. Upsal IV. 1: 122. 1905.) 
