ECHINOPSIS. 
75 
2: 133. 1920) from which it is very distinct although the flowers resemble very much 
those of a Trichocereus. 
21 . Echinopsis mamillosa Giirke, Monatsschr. Kakteenk. 17: 128. 1907. 
Stem simple, depressed-globose, 6 cm. high, 8 cm. in diameter, shining dark green, tubercled 
and unarmed at the apex; ribs 17, divided by deep furrows into acute tubercles; areoles 8 to 12 mm. 
apart, irregularly orbicular; radial spines 8 to 10, subulate, 5 to 10 mm. long; central spines 1 to 4, 
somewhat stronger and longer than the radials, all yellowish, brown at the apex; flowers 15 to 
18 cm. long, white, rose-colored towards the apex of the segments; flower-tube funnelform, some¬ 
what curved, green, bearing small ovate scales, these hairy in their axils; outer perianth-segments 
linear, brownish, spreading; inner perianth-segments oblong, apiculate; stigma-lobes yellow, 
linear, about 10. 
Type locality: Bolivia. 
Distribution: Bolivia. 
We have not seen this plant, but have a colored sketch of the type made by Mrs. 
Giirke, July 16, 1907. Through some error, the Kew Bulletin (Kew Bull. Misc. Inf. 
App. 87. 1908) describes the flower as only three-fourths of an inch in length. 
Although this species is formally described on page 135 of the Monatsschrift fur 
Kakteenkunde, it is technically described a month earlier (p. 128). In fact, the flowers 
are much better and more fully characterized here than in the formal description. 
Illustration: Monatsschr. Kakteenk. 31: 153. 
28 . Echinopsis formosa (Pfeiffer) Jacobi in Salm-Dyck, Cact. Hort. Dyck. 1849. 39. 1850. 
Echinocactus formosus Pfeiffer, Enum. Cact. 50. 1837. 
Echinopsis formosa spinosior Salm-Dyck in Labouret, Monogr. Cact. 303. 1853. 
Echinopsis formosa laevior Monville in Labouret, Monogr. Cact. 303. 1853. 
Echinopsis formosa rubrispina Monville in Labouret, Monogr. Cact. 303. 1853. 
Simple, oblong, 3 dm. high, pale green; ribs 15 to 35, vertical; areoles 8 to 10 mm. apart; spines 
acicular, reddish, 2 to 4 cm. long; radial spines 8 to 16, yellowish; central spines 2 to 4, brown; 
flowers golden-yellow, 8 cm. long, 8 cm. broad. 
Type locality: Mendoza, Argentina. 
Distribution: Western Argentina. 
We know the species only from descriptions and from some very poor illustrations. 
H. J. Elwes (Gard. Chron. III. 70: 199. 1921) states that there is a specimen in the Darrah 
Collection at Manchester that is 2 feet high. It has added but one inch to its height 
in the last 10 years. The specimen has been in England for 60 years. 
Cereus gilliesii Weber (Diet. Hort. Bois 471. 1896) was given as a synonym of Echinop¬ 
sis formosa. 
Melocactus gilliesii (Otto, Allg. Gartenz. 1: 364. 1833) a nd Echinocactus gilliesii and 
Echinopsis formosa gilliesii (Salm-Dyck, Cact. Hort. Dyck. 1844. 22. 1845) are usually 
referred to Echinopsis formosa. 
Echinocactus formosus crassispinus Monville (Labouret, Monogr. Cact. 303. 1853) 
was published as a synonym of Echinopsis formosa spinosior and therefore doubtless 
belongs here. 
Echinopsis formosa albispina Weber is mentioned by Schelle (Handb. Kakteenk. 118. 
1907). 
Illustrations: Schelle, Handb. Kakteenk. f. 51; Monatsschr. Kakteenk. 4: 187. f. 1; 
Knippel, Kakteen pi. 16. 
UNCERTAIN OR UNDESCRIBED SPECIES. 
Echinopsis miecklEyi R. Meyer, Monatsschr. Kakteenk. 28: 122. 1918. 
Simple, ellipsoid to short-columnar, pale grayish green, 16 cm. high, 10 cm. in diameter; 
ribs 14, high, somewhat sinuous; radial spines usually 10, but sometimes 9 or 11, straight, 2.5 cm. 
long, central spine solitary, stouter than the radials, pale brown, sometimes whitish at tips, 5 cm. 
long; flowers and fruit unknown. 
