25h EXPLANATION OF THE PLATES. 
y; 
PLATE THE THIRTEENTH. 
Fruits. 
Fig.1. Hordeum Zeocriton. Graminee. Cariopsis mag- 
nified, and partly uncoated. 
a. Perisperm. 
b. Posterior cotyledon saucerlike. : 
c. Root mamillee, three, enclosed in a coleorhize. 
d. Radicles two, each in a coleorhize. 
: Plumule; the gemmule having a pileolar, primordial 
leaf. 
Fig.2. Embryo of the same, magnified. 
a. Cotyledon. 
_ b. Root mamillee 3, in their coleorhizes. 
- c. Pileolar primordial leaf. 
Fig. 3. Oryza sativa. Graminee. Cariopsis cut length- 
ways and magnified. 
a. Gemmule with its pileole, enclosed in the coleoptile. 
i. Radicle in its coleorhize. 
Fig. 4. Hieracium glaucum. Composite. Embryo mag- 
nified. 
Fig. 5. Akenium of the same, magnified ; pappus sessile, 
bristled, appearing simple to the naked eye: the pericarp is 
cut open, and the seed divided longitudinally. 
Fig.6. Polygonum scandens. Polygonee. Carcerule cut 
lengthways and dissected. Carcerule boney; seed coated, 
upright, perispermed ; embryo 2-cotyledon, lateral, thread- 
like, bent; radicle opposite the hile, above. 
Fig. 7. Cherophyllum aromaticum. Umlellifere. Cre- 
mocarpe with the two coques separated, but remaining sus- 
pended to the axis: magnified. 
Spermapodium axile, 2-parted at top. 
Styles persisting on the fruit. \ 
Commissures, or the faces applied to each other. 
. Latuscule, or face opposite to the commissure. 
Vallecules between the ribs of the coques. 
Spermapodophore. 
. Stylopodium. 
Fig. 8. A coque of the same cut lengthways and mag- 
nified. 
a. Perisperm, horny. 
b. Integument of the coque. 
¢ Embryo small, basilary. 
mAs Ue Ss 
