267 
Fam. 31. Typhaceae. 
116. Sparganium minimum Fries. 
Rosenvinge Tilleg, p. 709. Anm. p. 710. «Sparganium» in 
B. G. Nathorst. Kritiska anmärkn. om den grönl. vegetat. hist. 
Bihang t. kgl. sv. Vet.-Akad. Handl. Bd. 16, Il, Nr. 6, 1890 
p. 17. Ostenf. Fl. arctica p. 18. 
Very rare, in ponds with 20—40 ctm. deep water, sometimes 
drying up in August. The stems are 30—40 ctm. long, with 2—3, 
60—80 etm. long floating leaves, 1—2 female heads without or 
with one short stalk; sometimes the lower one is free from the 
ligule; 1 male head. Flowers in the middle of August, sets 
ripe seed. 
Amakä in one of the ponds, Sparganium-Dam in Elvbakker 
near Tasiusak. 
The Sparganium mentioned by Prof. Nathorst I. c. is un- 
doubtedly the above named species and the finding place is un- 
doubtedly my locality, ,Sparganium-Dam*, passed by N. on his long 
walking tour on the 4 of September 1883. 
Fam. 82. Potamogetonaceae. 
117. Potamogeton filiformis Pers. 
Rosenvinge Tilleg p. 710. P. marinus Lge. Consp. Fl. 
Groenl. p. 117 & 282. 
Found but in a single place in a pond with abt. 30 ctm. water 
and sandy ground covered with a layer of mud abt. 2 ctm. thick, 
10—20 ctm. high; stems with numerous leaves shoot out from the 
thin, white, creeping rhizome; sterile. 
Amaka. 65°39’ lat. N. 
Fam. 88. Orehidaceae. 
118. Habenaria albida (L.) R. Br. 
Lge. Consp. Fl. Groenl. p. 118 & 282. 
Rare, on herby and grassy slopes; abt. 20 ctm. high with four 
