128 THE FLORA OF NEBRASKA. 



G30- 810 /I long, about 3G0 /( broad, several sharp prongs at the base; bracts 

 at the fertile joints variable in length, usually somewhat shorter than the 

 carpogoue. 



Whitman, lakes in central Cherry county, 



PI. XXXV. Figs. 1, 1 a, parts of plants natural size; Pig. '2, part of stem show- 

 ing bases of leaves of a whorl and two fertile nodes; 2 b, stipular whorl; 

 2 a, remainder of leaf shown in 2; Fig. 3, carpogoue containing spore; 

 Fig. i, cross-section of stem, x.W. 



Cliara sojniifta A. Hn. Pi. Lindh. 56. (Bost. Journ. Nat Hist. 1815 p. 2G3.) 



General habits of C. fragilis; stem triply corticated; leaves long, in whorls of 

 8-12, with 6-10 segments, the lowest or first segment short, not corticated, 

 all the others corticated, last segment tipped with several short spines; 

 stipular whorl well developed, of 3 series of stipules, spines on the stem 

 short and sharp; monoecious, but antherids and carpogones borne at dif- 

 ferent joints, not together; antherids about .360-380 /z in diam.; spore of 

 carpogoue G30.\360/i, crown of long, narrow cells spreading or connivent. 

 Mindeu. 



PI. XXXVI., Pig. 1, part of plant natural size; Pig. 2, part of stem showing 

 lower naked segments of the leaves of a whorl and stipular ring, 2, a, b, 

 c, leaf with fertile nodes; Fig. 3, cross-section of stem, 3a, .spine, .\5U. 



