FKUIT. 



101 



Examples, Mira!)ilis and Salsola. 



33. Sphahrocarpum , IVricaipiiim induliiscont, one seeded, 

 cnclosi'd vvitliiri a tlesliy poriantli. 



Examples, Taxns, Blitum. 



34. Sf/conus, a fleshy rachis, havinir the form of a flattened 

 disk, or ot'a hollow receptacle, with distinct flowers and dry 

 (>ericarpia. 



Ficiis. 



35. Strohilus, an amentum, the car- 

 -^^ 14fl j)elhio of wiji(;h arc scalc-liUe, spread 



\s open, and bear naked seeds; sometimes 



^s^^ the scales are tliin with little cohe- 



\ sion ; but they often are woody, and 



cohere into a single tuberculated 



mass. 



Example. Piniis, fig. 141. 



36. ISorosis, a spike or raceme 

 converted into a fleshy fruit by the 

 cohesion in a single mass of the ova- 



Examplr. 



y 



ria a In, :i i ,u envelops. 

 Exam I lie. Morus. 



Seed, 



115. The seed is a perfected, impregnated ovule. No soon- 

 er has the influence of the pollen been felt by the ovule, than 

 various c'langes commence ; the foramen closes^uj), the integu- 

 mcnts linrd'Mi, the heretofore pnlpy substance becomes consol- 

 idated. The most material change that takes place, however, 

 is the appearance of a new body, called the embryo. 



The face of a seed is that part of it parallel with the pla- 

 centa, or when the clialaza is present, this ori'^an with only 

 few exceptions, runs over the face. 'I'he opposite surface is 

 the back. 



116. The parts of the seed demanding our attention are the 

 coverintr, hihim, raphe, chalaza. embryo, and albumen. 



The integuments or coverings of t!ie seed are subjects of 

 much di.scu-*sion. both as to their nuniber and constitution. 

 The diversity of opinion on the subject, originates, no doubt in 

 a great measure from the change they imdergo, from the 

 transformation of the ovule into a seed. One would naturally 

 suppose that the integuments of the seed would be the same 

 as those of the ovules. But this is certainly not the case in 

 many instances. Three have been named by diflercnt wri- 

 ters. corresponding to the three lavers of tlie ovule : but the 



9* 



