— setacea, ix, 61.f
— Shortiana, xxx, 60.f
— siccata, x, 278f; xiv, 353.
— Sparganioides, viii, 265.
— spectabilis, xxix, 248.f
— spherostachya, xlix, 44.f
— squarrosa, vii, 270f; xi, 316.
— stellulata, xi, 306.
— stenolepis, xxx, 59.f
— stenophylla, xxvii, 237.