— 305 — 



Petrosimonia Bge. 



64. P. sibirica Pall. Bge. 1. c. p. 60. 



Hab. in Mongolia boreali in itinere a fl. Ulasty ad 

 fl. Tumandy, 7. Aug. 76 et ad fl. Tschakyrta, 5. 

 Aug. 76. (Potanin.) 



HalogetOD C. A. Mey. 



Semen verticale H. glomeratus. 



» horizontale H. arachnoideus. 



65. H, arachnoideus Moq. Bge. 1. c. p. 98. Ind. mong. 

 1. c. 



Hab. in Mongoliae orientalis australioris arenosis 

 (Bunge, 1831.,Tatarinow, 1840.,Kirllow 1841), et 

 australi, in montibus Alaschan, Sept. 71. (Prze- 

 walski fructif.), boreali: in ditione Chalcha, lapi- 

 dosis nudis deserti aridissimi Golbyn-gobi frequens, 

 15. Aug. vix florens (Przewalski), in litore austro- 

 orientali lacus Uliungur prope Salburta (Potanin), 

 in Mong. occid. (Piassezki). 



Collecta insuper in terra Chalcha, 20. Aug. 73, spe- 

 cimina duo sub N. 267 a. D*" Przewalski, quae for- 

 san ad speciem novam pertinent; distincta habitu 

 multo robustiore, caule pedali annuo quidem sed 

 lignescente, cortice alutaceo-albo, flores saltern 

 medii in glomerulo pentandri, sed staminodia de- 

 tegere haud potui, fructu déficiente seminum situs 

 haud eruendus; affinis etiam H. tibetico m. 



66. jff. glomeratus M. B. Bge. 1. c. p. 95. 



Hab. in Mongolia boreali, pr. Kertsch ad fl. Tscha- 

 kyrta, 5. Aug. 1876. (Potanin) et occidentali (Pias- 

 sezki). 



Mélanges biologiques. X- 39 



