154 Kansas Academy of Science. 



III. Trichomes 5-25 mic. in diam. 



A. Trichomes 8-24 mic. in diam.; apex of trichoma slightly taper- 

 ing, capitate; cells 2.7-5.6 mic. in length; sheaths thickened and 

 yellow with age L. sestVAiriu 



B. Trichomes 6-10 mic. in diam.; apex of trichomes not tapering, 

 not capitate; cells 1.7-3.3 mic. in length; sheaths thickened and 

 roughened with age L. vxartensiana 



C. Trichomes 11-16 mic. in diam.; apex of trichomes slightly taper- 

 ing, somewhat capitate; cells 2-3.4 mic. in length, transverse 

 walls granular; dark blue-green cell contents, sheaths colorless, 

 thick and roughened L. majw. 



D. Trichomes 7.5-13 mic. in diam., constricted at the joints; apex 

 of trichomes not tapering, not capitate; cells 3-10 mic. in length; 

 sheaths colorless, thin, papery L putealis. 



23. L. nana Tilden 



Kansas: Masses, Burlington, August, 1915, April, 

 1916; Council Grove, October, 1916. 

 2^. L. subtiUs W. West. 



Kansas: Ottawa, November, 1915. 



25. L. lutea Agardh. 



Kansas: lola, August, 1915, December, 1915, March, 

 1916; masses, Ottawa, November, 1915, October. 

 1916, dense masses of yellow color; much, Osawat- 

 omie, April, 1916, October, 1916; Washington, 

 August, 1916. 



26. L. digiieti Gomont. 



Kansas: Coffeyville, November, 1915, July, 1916, 



masses; Washington, August, 1916. 

 Missouri (11). 



27. L. serugineo-cseridea Kuetzing, Gomont. 



Kansas: Council Grove, November, 1915, July, 1916, 

 October, 1916, calcarious deposite; Atchison, October, 

 1916, slimy velvety growth, carpet; Emporia, March, 

 1916, August, 1916; Lansing, November, 1915, 

 March, 1916, August, 1916; Paola, March, 1916. 



Colorado (15). 



28. L. aestuarii Mertins Liebman. 



Kansas: Coffeyville, August, 1915, November, 1915. 

 Iowa (4); Nebraska (25). 



29. L. martensiana Meneghini. 



Kansas: Atchison, August, 1915, March, 1916; much, 

 Emporia, November, 1916, August, 1916; Burling- 

 ton, April, 1916; Coffeyville, July, 1916. 

 Variety: Calcarea Tilden. 



Kansas: Lyndon, October, 1916, about edge in 



calcareous material. 



30. L. major Meneghini. 



Kansas: Neodesha, October, 1916, masses. 

 Nebraska (3). 



31. L. put calls Montagne. Plate II, fig. 7. 



Kansas: Chanute, August, 1916; Cherryvale, October, 

 1916, mat about edge of resei*voir along vnth O. 

 splendida and O. terebrifonnis ; Kansas City, March. 

 1916; Winfield, August, 1916, March, 1916. 

 5. Hypheothrix. 



32. H. coriacea Kuetzing. 



Filaments long and flexible; plant mass encrusted with 



calcium carbonate; trichomes 1-1.7 mic. in diam. 

 Kansas: Leavenworth, April, 1916. 



