164 ALTERATION OF POSITION. 
tion of adventitious buds, such as happens in prolifi- 
cation. Such a partial change from a floriferous to a 
foliiferous branch may be seen in a specimen of Sam- 
bucus nigra in the Smithian herbarium in the Linnean 
Society, where the ultimate branches of the cyme bear 
small leaves. My attention was directed to this speci- 
men by the Rev. W. Newbould. 
Jacquin figures an analogous case in Sempervivum 
sediforme,' in which the branches of the inflorescence 
were prolonged into leafy shoots. 
Sometimes from the side of a flower-stalk or scape, 
which usually does not bear leaves, those organs are 
produced. The common dandelion, Taraxracumh, some- 
times offers an illustration of this, and also the daisy 
(Bellis)? In a specimen of fasciated cowshp given me 
by Mr. Edgeworth there was a similar formation of 
leaves on the flattened stalk. 
Production of leaves or scales in place of flower-buds.—The 
position of the leaf and of the flower-buds respectively 
1s, In most plants, well defined, but occasionally it 
happens that the former is formed where, under ordi- 
nary circumstances, the latter organ should be. This 
may happen without the formation of any transitional 
organs between the two, and without actual increase 
in the number of the buds. Where there is evidently 
a passage from leaf-bud to flower-bud, or vice versd, 
the case would be one of metamorphy. If the 
number of buds be augmented, or they be mixed with 
the flower-buds, then it would be referable to leafy 
prolification of the inflorescence. There remains a 
class of cases wherein there is a complete substitution 
of one structure for the other, it may be without the 
shehtest mdication of transition between the two, and 
without any admixture of leaf-buds among flower-buds, 
1 * Misc. Austriac. ad Bot.,’ vol. i, p. 133, t. 5. 
2 See also Carriére, ‘Revue Horticole,’ 1866, p. 442; and as to pears, 
Radlkofer in ‘ Bericht iiber die Thatigkert der Baierischen Gartenbau 
Gesellschaft,’ 1862, p. 74, t. 1. 
