360 Schively — Contributions to the Life History of 



legumes. Those of the remaining types rarely fail to pro- 

 duce fruit. 



25. Legumes of types a } b, d, possess firm resisting walls, 

 being provided with sclerenchymatous fibres. These fibres 

 are absent in (c). But two types of hair are found upon 

 legumes of types (a, b } d) ; they are. more numerous upon 

 (d) than upon the others. Three distinct types of hair are 

 seen upon the surface of legumes of type (c). The stomata 

 of the aerial and subterranean legumes also differ. 



26. Aerial cleistogamic flowers or young legumes may 

 be converted into the subterranean form of legume (c), 

 if buried in the soil. 



27. A plant raised from terrestrial seed is capable of 

 bearing in summer, flowers of all three types — a } b, c. 



28. The low-growing forms of Amphicarpcea found in the 

 woods, which may be feeble twiners or non-twiners ; and 

 the taller, more vigorous specimens found upon the outskirts 

 of the woods, are believed to be varieties due to environ- 

 ment and not distinct species as some have supposed. 



Bibliography. 



Elliott. 1 — " Journal of Academy of Natural Sciences of Philadelphia," 

 Vol. 1, p. 372. 



Elliott. 2 —" Botany of the South." 



Darlington. 3 — " Florula Cestrica." 



Torrey and Gray. 1 — " Flora of North America." 



GRAy. 5 — " Botany of Northern United States." 



Von Mohl. 6 — " Bot. Zeitung," 1857, p. 730. 



.'—"Bot. Zeitung," 1863, pp. 309-328. 



Kuhn. 8 - " Bot. Zeitung," 1867, p. 65. 



Gray. 9 — "American Journal of Science," Second Series, Vol. 39, p. 105. 



Darwin. 10 — " Forms of Flowers on Plants of the Same Species." 



." " Power of Movement in Plants." 



, 12 — " Movements and Habits of Climbing Plants." 



Henslow. 13 — "Nature," October 19, 1876, p. 543. 



, 14 — "Gardener's Chronicle,'' 1877, p. 271. 



Farlow. 15 — " Bulletin of Bussey Institute," 1878, pp. 224-252. 



Meehan. 16 — "Proceedings of Academy of Natural Sciences," Philadel- 

 phia, 1887, pp. 323-333. 



Huth, E. 17 — " Ueber Geokarpe, Amphicarpe, und Heterocarpe Pflanzen." 

 Abhandlung. Ver. Naturwiss. VIII, 1890, pp. 89-121. 

 Frankfort-on-Oder. 



