LECT. IX.] HYBERNACULA GEMS. 471 



deeply embrace the opposite leaf, 

 which in its turn encloses the one op- 

 posed to it ; and so on to the centre of 

 the bud. It is beautifully exemplified 

 in Day Lily, Hemerocallis ; in the 

 Iris family ; and in Solomon's Seal, 

 as represented in the marginal cut, in 

 which fig. 1. shows the character of the 

 entire bud, with the leaf a. embraced 

 by the opposite one b. ; and fig. 2. the 

 transverse section in which a. b. and 

 the other leaves are drawn slightly 

 asunder, so as to show more distinctly 

 their arrangement. 



3. The Ob volute (Obvoluta), in which one 

 leaf, doubled lengthways, embraces 

 within its doubling one half of the 

 opposite leaf, folded in the same manner ; 

 as in the genus Valerian, Valeriana ; 

 Scabious, Scabiosa; Teasel, Dipsacus ; 

 and Sage, Salvia. In the marginal 

 cut, a. represents the opening bud of 

 Common Sage, b. its transverse sec- 

 'tion. 



Rolled. This division contains all those 

 gems in which the leaves are rolled, either on their 

 lateral margins, or from the apex to the, base. 

 There are five varieties of this form of foliation. 

 l.The convolute (Oonvoluta}, in which the leaf 



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