EXPLANATION OF THE PLATES. 
263 
Fig. 25. Lavatera arborea. Malvacece. Fruit cut verti- 
cally and magnified : dieresile axile, compressed, 6-coqued ; 
coques one- celled, one-seeded; seed peltate; embryo bent; 
cotyledons plaited ; radicle basilary. 
Fig. 26. Ricinus communis. Eaiphorliacece. Regma cut 
longitudinally and magnified ; three-celled, covered with a 
pannexterne that separates ; coques one-cel led, two-valved, 
one-seeded; placentarium under the tip; seed coated, ca- 
runculated, perispermed, hanging. 
a. Perisperm. 
h. Embryo two-cotyledon, straight, in the middle; coty- 
ledons leaflike. 
c. Caruncle. 
d. Umbilical cord. 
Fig. 27. The same, with one of the coques taken away 
from the two others ; placentarium central, columnar, three- 
sided, with three blunt beaks passing into the cells, regma 
covered with soft spines. 
Fig. 28. The same, cut transversely, showing the three 
coques, emptied of their seeds. 
Fig. 29. The seed of the same cut across ; embryo two- 
cotyledon. 
Fig. 30. The seed cut lengthways; embryo nearly the 
size of the albumen. 
