EXPLANATION OF THE PLATES. 261 
Fig. 28. Saxifraga granulata. Saxifragee. Capsule half 
adherent, two-headed, opening in the middle of the head ; 
calyx. i Ss 
Fig. 29. Ipomea purpurea. Convoluulacee. Capsule cut 
transversely, after its dehiscence, three-celled, three-valved, 
septicidal; partitions. verticillate, interpositive, persistent ; 
placentaria basilary. 
Fig. 30. Orontium majus. Scrofulariee. Capsule eut 
transversely ; two-celled ; partitions two, valvean, marginal, 
-meeting ; placentarium central, two-lobed. 
\ Fig. 31. Capsule of the same entire, three-hoied at the 
oe 
PLATE THE SEVENTEENTH. 
Fruits. 
Fig. 1. Acteea spicata. Ranunculacee. Berry cut trans- 
versely, fleshy, camarelike; seeds in two rows, nearly semi- 
circular. 
Fig. 2. The same, with part of the covering removed, 
to show the seeds lying over one another in two rows. 
Fig. 3. The seed cut lengthways; perisperm the shape 
of the seed; embryo very small, nearly ovate, at the base. 
Fig. 4. Ribes spinosum. Grosswlarie. Acrosarcum, or 
berry crowned with the persistent calyx, cut longitudinally; 
placentaria two, lateral, opposite. 
Fig. 5. The same cut transversely; placentaria lateral, 
triple. 
Fig. 6. Perisperm of the same cut longitudinally and 
magnified, with the umbilical cord, as it passes through the 
gelatinous pulp surrounding the seed: embryo very small, 
at the tip. . 
Fig. 7. Vaccinium montanum. Vaccinie. Acrosarce, oF 
crowned berry, spherical. 
Fig. 8. The same cut transversely: acrosarce five-celled ; 
placentaria central. 
Fig.9. Androseemum officinale. Hypericinee. Berry cut 
transversely, one-celled; placentaria three, lateral, spongy, 
at first solid, but when ripe leaving a vacant space between 
their two divisions. 
