199 
This annual plant resembles the perennial S. verrucosa M. Bieb. 
so much, that it could be considered as an annual variety of it. 
N. 2030. Chiwa, on dry plains between Chodsheli and Kunja Urgentsh. 
June 27. 1899. 
Area: Southern Russia, Southern Siberia, middle- and central Asia. 
48. S. rigida Pall.; Ldb. fl. ros. III, p. 809; Trautv. Enum. 
pi. songor. p. 68; Bunge reliq. Lehm. p. 471; Bunge Enum. p. 435; 
Bunge in Rgl. et Herd. 1. c. p.403; Buhse 1. c. p. 189; Bois. fl. 
or. IY, p. 962; Aitchison Afghan. Delim. p. 103; O. Fedtschenko 
1. c. p. 131. 
N. 1884. By the river Amu Daria between Tshardshui and Chiwa, in 
desert (of „Loss“) by Kara Aigir. June 26. 1899. 
N. 2001. Chiwa, on the mountain Sultan Babå. July 24. 1899. 
? N. 2003. Ib id (sterile, white-hairy). 
N. 2029. Chiwa, on dry plains between Chodslieli and Kunja Urgentsh. 
July 27. 1899. 
N. 2123. Transcaspia, by Babadurmaz near Askabad. Sept. 6. 1899. 
— — v. tenuifolia Bois. fl. or. IV, p. 963. 
N. 2214. Per sia, in the mountains near Teheran. Sept. 28. 1899. 
Area: South-western Sibiria, middle- and central-Asia, Persia, Afghanistan. 
49. 5. verrucosa M. Bieb.; Mém. Soc. Imp. Nat. Moscou I. 
1806; Ldb. fl. ros. III, p. 814; Bunge Enum. p. 436; Buhse 1. c. 
p. 189; Bois. fl. or. IV, p. 961; Hooker fl. brit. Ind. V, p. 18; 
Litwinow Herb. Fl. ros. N. 436; S. ericoides C. A. M. in Eichw. PI. 
casp. cauc.; Bunge reliq. Lehm. p. 471. 
N. 2024. Chiwa, on dry plains between Chodsheli and Kunja Urgentsh. 
June 27. 1899. 
N. 2057. Chiwa, near Kunja Urgentsh. Aug. 1. 1899. 
Area: Southern Russia, Southern Sibiria, Asia-Media. 
50. S. sp. 
This is a perennial white-hairy plant, nearly without leaves, 
but with many flower-balls and very succulent. The floral leaves 
are longer than the bracteoles. The flowers are so young, that the 
plant cannot be determined with safety. Perhaps it is a new 
