ECHINOFOSSULOCACTUS. 
n 3 
7 . Echinofossulocactus lloydii sp. nov. 
Nearly globular, 12 cm. in diameter or more, crowned by the long overtopping connivent spines; 
ribs very numerous, thin, more or less folded; areoles brown, woolly when young; radial spines acicu- 
lar, 10 to 15, white, 2 to 8 mm. long, spreading; central spines 3, light brown, much elongated, some¬ 
what incurved and connivent, the two lateral ones similar and not so papery, the middle one very 
thin, annulate, 4 to 9 cm. long; flowers small, nearly white; outer perianth-segments with a green 
stripe on the mid-vein; inner perianth-segments thin, narrowly oblong, acute; scales on the ovary 
ovate, acute, very thin. 
Collected by F. E. Lloyd in Zacatecas, Mexico, August 14, 1908 (No. 7), and flowered 
in Washington the same year. 
Figure 118 is from a photograph of the type plant. 
8. Echinofossulocactus zacatecasensis sp. nov. 
Plants solitary, globular, 8 to 10 cm. in diameter; ribs pale green; very thin, about 55; radial 
spines 10 to 12, spreading, acicular, white, 8 to 10 mm. long; central spines 3, brownish, 2 of them 
terete, but the middle one flattened, erect or connivent, longer than the other 2, sometimes 3 to 
4 cm. long, never annulate; flowers 3 to 4 cm. broad, nearly white; inner perianth-segments linear- 
oblong, with an ovate apiculate tip, slightly tinged with lavender, 15 mm. long; style slender; 
stigma-lobes bifid(!); scales on the ovary broadly ovate, apiculate, scarious. 
Collected by F. E- Lloyd in northern Zacatecas, Mexico, in 1908 (No. 58). Living 
specimens were sent to Washington and these flowered in March 1909. 
Fig. 119.—Echinofossulocactus zacatecasensis. 
Fig. 120.—Echinofossulocactus arrigens. 
This species is perhaps nearest E. multicostatus, but has fewer ribs and fewer radial 
spines. 
Figure 119 is from a photograph of the type plant. 
9 . Echinofossulocactus lamellosus (Dietrich). 
Echinocactus lamellosus Dietrich, Allg. Gartenz. 15: 177. 1847. 
Subglobose to short-cylindric, more or less depressed at the apex; ribs about 30, strongly flat¬ 
tened, more or less undulate; areoles remote, tomentose when young; spines 5 or 6, white (Schumann 
says yellow) with brown tips; flowers tubular, 3.5 to 4 cm. long; inner perianth-segments linear to 
linear-lanceolate, acute; stigma-lobes 5 to 8, linear, yellow. 
Type locality: Mexico. 
Distribution: Hidalgo, Mexico. 
