Typhaceee. Aroideae. 
361 
— The 2 spikes of the inflorescence gen. touching. Stig. 
spathulate-lanceolate ...... 3 
3. Stig. exceeding the hairs of the perianth. Ls 12—18 mm 
broad. Fern, spikes (at the last) blackish brown. Stem 
10—20 dm. —As the last; distrib. 6 latifolia L. 2062. 
— Stig. shorter than or hardly as long as the hairs of the 
perianth. Stem lower; ls narrower (5—10 mw broad); 
fem. spike gray; male spike shorter.—As the last; 
Rolle ? banks of the Aar near Thun, Bern, Lyss, Aarau; 
edges of the Singine near Neueneck; of the Saane 
near Freib.; Biinzenermoos near Muri; Baar on the 
Lorze. 6.Shuttleworthii K. S. 2063. 
537. Sparganium. Bur-reed. XXI, 30, 22. 
1. Male heads 1—2. Stig. oblong-linear. Ls flat, floating 
in the water, as also the stem. S. natans auct.—Marshes 
of peat-mosses; ditches; distrib. but not common. 7 
minimum Fr. 2064. 
— Male heads 4—10. Stig. linear. Ls 3-cornered at the 
base, gen., like the stem, erect . ... 2 
2. Stem simple above. (Heads in a raceme, and above that 
in a spike.) Ls with flat side-faces. —b. fluitans A. Br. 
Stem and ls elongated, floating in the water.*)—Ditches, 
ponds; distrib., but less common than the following. 6 
simplex Huds. 2065. 
— Stem branchy above. Ls with concave side-faces.—As 
the last; distrib. 6 . . . • ramosum Huds. 2066. 
111. Aroideae. 
538. Arum. Arum. XXI, 27. 
1. Spadix blackish violet. Ls uniformly green or spotted 
with black.—Hedges, thickets; distrib.5 maculatum L. 2067. 
— Spadix yellow. Ls with whitish nerves. —T. (Gandria). 4 
italicum Mill. 2068. 
539. Calla. Calla. XXI, 27. VI, 30. 
1. Ls cordate. Spathe white inside.—Marshy wooded places; 
Lucern (Chiisirainwald near Sempach, and between Meggen 
and Adligenschwyl). 6 . • palustris L. 2069. 
*) We do not know if the pi. of Vuadens, Canton Freib., belongs to this 
or to the closely allied species: Sp. affine Schnitzl. ; the latter differs in 
very long, limp and almost flat Is, it is found in the Black Forest and in the 
Vosges.— Sp. natans Fr., a northern species, differs from it. 
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