According to Brongniart, Marsilea pubescens sleeps like the present species.
2
In the chapter on the Sleep of Plants the conspicuous circumnutation of Marsilea quadrifoliata (Marsileaceae, Fam.
3
Marsilea quadrifoliata (Marsileaceae).-Theshape of a leaf, expanded horizontally during the day, is shown at A (Fig.
4
Marsilea quadrifoliata: circumnutation and nyctitropic movement of leaflet traced on vertical glass, during nearly 24 h. Figure reduced to two-thirds of original scale.
5
Marsilea quadrifoliata: A, leaf during the day, seen from vertically above; B, leaf beginning to go to sleep, seen laterally; C, the same asleep.