EXPLANATION OF THE PLATES. 387 



petal, 4c, receptacle with tlie pistils, and one of the 

 sterile stamens ; all the natural size. 



5, Delphinium, a flower entire ; 5^^, sepals and petals 

 displayed; the five outer leaves are the sepals, the four 

 smaller, inner ones, the petals. 



6, Aconicum Napellus, an entire iiov/er; C«, a flower 

 displayed ; both representations the natural cize. 



7, Berberis vulgaris, a magnified flower ; 7«, one of 

 the natural size ; 7Z>, a stamen ; Tc, a petal with two 

 glandular spots at the base ; both magnified ; Tt?, a berry, 

 the natural size. 



8, Calycoearpum, inflorescence, the natural size; ^a, a 

 sterile flower ; SZ*, a fertile one ; Sc, a pistil — all magni- 

 fied ; 8^5 a drupe, the natural size. 



9, Papaver, a small capsule, the natural size. 



10, Arabis Canadensis, a flower, natural size ; 10«2, re- 

 ceptacle with pistil and stamens, magnified. 



11, Pulsatilla Nuttalliana, a flower with the remote in- 

 volucre ; ll6^, an achenium v/ith its plumose tail, both the 

 natural size ; lib, a stamen. 



PLATE lY. 



1, Dicentra Canadensis, a flower entire ; 1^, pieces of 

 the flower separate (namely, the two outer, saccate j^etals 

 with stamens above, the pistil with the two sepals be- 

 tween, and the inner two petals beneath) ; IJ, one set of 

 stamens, their filaments partly united into one; -all the 

 natural size. 



2, Yiola, an entire flower ; 2^, the pieces of the jDerianth 

 separate ; 25, a capsule dehiscent ; all of the natural size. 



3, Hypericum perforatum, a flower of the natural size ; 

 Za, pistil ; 35, cross-section of the capsule ; both magnified. 



4, Spergularia rubra, flowers of the natural size ; 4^, a 

 flower magnified ; 45, cross-section of the pistil ; 4c, longi- 



