LECT. X.] POSITION OF LEAVES. 539 



close; and imbricated (imbricata), (12, and also 

 fig. l . Plate 4), that they partly cover each other, 

 like the tiles upon a house-top : but if they do not 

 overlap very closely, and the leaves regularly di- 

 verge, producing a figure somewhat resembling 

 that of a rose, the position is termed roselata (13), 

 and crowning (coronantia) , when they terminate 

 the stem or its divisions like a plume of feathers, as 

 in the Palm tribe. Remote (remota) is employed 

 solely as a term of comparison, and implies that 

 the leaves are at greater distances from one an- 

 other than is usual in the majority of plants. 



In whatever manner leaves are disposed on 

 the stem or branches, the mode in which they are 

 connected with these parts is termed their in- 

 sertion; and the diversities of this are taken ad- 

 vantage of in forming specific characters. The 

 majority of leaves are supported on footstalks ; 

 and those thus furnished, whether the foot- 

 stalk be long or short, siinple or compound, 

 are said to be petiolate (folia petiolata) ; but if 

 there be no footstalk, they are termed sessile 

 (sessilia). There are several varieties of sessile 

 leaves : thus, if the leaves clasp the stem with 

 their bases, they are termed embracing, or clasp- 

 ing (amplexicauliaj, (14, page 540); if the em- 

 bracing leaves be opposite and united at their 

 bases, they are said to be connate (connata), (15, 

 page 540) ; and connato-perfoliata, ( \ 6, and fig. 6. 



