56 



the; cactaceae. 



August lo, 192 1, near Rio Grande, Starr County, Texas. The plant flowered in Washing- 

 ton March 13, 1922. 



Plate VI, figure i, is from a photograph of the type plant taken by Robert Runyon. 

 Figure 53 is from a photograph taken by Robert Runyon. 



5. Escobaria chaffeyi sp. nov. 



Short-cylindric, 6 to 12 cm. long by 5 to 6 cm. in diameter, almost covered by the numerous 

 white spines; tubercles rather short, light green, with a narrow groove above; radial spines numerous, 

 spreading, bristly ; central spines several, a little shorter than the radials and brown or black-tipped ; 

 flowers 15 mm. long, cream-colored or sometimes purplish; outer perianth-segments ciliate; inner 

 perianth-segments oblong, obtuse, entire ; style white ; stigma-lobes very short, yellowish green ; fruit 

 crimson, 2 cm. long. 



Collected by Dr. Elswood Chaffey near Cedros, Zacatecas, Mexico, in June 1910 

 (No. 5, type), and by F. E. Lloyd near the same locality in 1908 (No. 29). 



Fig. 53. — Escobaria runyonii. 



Fig. 54. — Escobaria sneedii. 



6. Escobaria sneedii sp. nov. 



Densely cespitose, sometimes with as many as 50 joints, creeping or spreading; joints cylindric, 

 up to 6 cm. long, i to 2 cm. in diameter; tubercles numerous, hidden under the many spines, terete, 

 2 to 3 mm. long, in age naked; groove narrow, hairy throughout its length; axils of tubercles not 

 setose; spines 20 in a cluster or more, nearly white, or the larger ones brown at tip, longest one 6 

 mm. long, all usually appressed, but the longer ones near top, connivent; flowers small, 10 mm. long 

 or less when dry, the outer segments long-ciliate ; fruit (immature) a little longer than thick, 5 to 7 

 cm. long, green (?), at first juicy, naked; seeds globose, brown, nearly i mm. in diameter, pitted. 



This curious httle plant was sent us in February 1921 by Mrs. S. L. Pattison from 

 southwestern Texas; it was collected by J. R. Sneed, who at first found only three clumps, 

 but afterwards a fourth clump was discovered and again it was found in June 1921 just 

 after it had flowered. It is known from a single station on the Franklin Mountains, 

 Texas. According to Mrs. Slater the flowers are pink to saffron. 



Figure 54 is from a photograph of a single plant sent by Mrs. Pattison in 1921. 



7. Escobaria bella sp. nov. 



Cespitose, cylindric, 6 to 8 cm. long; tubercles nearly terete, 1.5 to 2 cm. long, the groove white- 

 hairy, with a narrow brownish gland near center; radial spines several, whitish, i cm. long or less; 

 central spines 3 to 5, brown, unequal, the largest 2 cm. long or more, ascending; flowers central. 



