Fig. 182: a-d, Scirpus validus: a, habit, X l^; b, cross section of upper stem, X 1; 

 c, scale, X 7; d, achene, X 10. e-h, Scirpus californicus: e, cross section of upper stem, 

 X 1; f, sheath, X 1; g, scale, X 7; h, achene, X 10. (Courtesy of R. K. Godfrey). 



