— — var. angustifolius Fieb. 
This form with long and narrow leaves is in Asia-Media and 
India more frequent than the typical form. 
N. 1678. Bucliara, in the pond „Hafs-i-Pasha-Chodsha“. May 16. 1899. 
6. P. Friesii Rupr. ? P. mucronatus Schrad. 
Mr. Hagstrom means this is an intermediate form between 
P. Friesii and P. rutilus Wolfg. 
N. 1117. Pamir, in the lake JashilKnl, depth 1—2“ Alt. 3800“ Aug. 15. 
1898. 
7. P. pectinatus L. 
N. 2130. In the Caspian See by Krasnowodsk, depth l m . Sept. 7.1899. 
8. P. amblyophyllus C. A. Meyer (Beitr. z. Pflanzenk. des 
russ. Reiches. St. Petersburg 1849. 6. lief. p. 10). This species 
belongs to the group Coleogeton and under this nearest to the 
filiformis-giou]). Meyer says „proxime ad P. pectinatum accedit“; 
several botanists take it for a form of P. Jiliformis, but the fruit 
is different, and by the broad leaves, whose point is at least as 
broad as the middle of the leaves, and by the short rigid ligulae 
this species is sufficiently distingued from P. jiliformis. — The 
plant agrees perfectly with the original (fructiferous) specimens 
from the museum of Helsingfors. — The localities indicated by 
Meyer (Kasbek Kaukasus and Jahagan Altai) might make it pro- 
bable, that P. amblyophyllus were to be found in the Pamir. 
N. 711. Pamir, in swamps by the river Mnrghab, in stagnant water. 
Alt. 8800“ July 8. 1898. 
N. 712. Ibid, in running water. 
N. 1456. Pamir, prov. Wakhan (Ishkashim), in running water by Nut. 
Alt. 2700“ Oct. 3. 1898. 
9. P. jiliformis Pers. 
N. 639. Pamir, in a pond by the lake Kara Kul. Alt. 4000“ July 1. 
1898. 
N. 879. Pamir, in swamps by the river Alitshur. Alt. 3800“ July 22. 
1898. 
N. 1102. Pamir, in the lake Jashil Kul, depth 0,5“. Alt. 3800“ Aug. 13. 
1898. 
