APPENDAGES. 75 



and Cinquefoil, where they are united 

 laterally to the leaf-stalk, and on the out- 

 side of it, fig. 1, pi. 36, fig. 3,* pi. 37. In 

 Persicaria they embrace the stem in an un- 

 divided tube. In the Grasses they consist 

 of a white membrane, crowning the sheath 

 of the leaf, and embracing the straw or 

 culm, fig. 2. In the Yellow Vetchling, 

 (Lathy rus aphaca) they supply the place of 

 leaves ; the true leaves soon disappearing. 



Bractece, floral leaves, or small leaves with 

 which a flower stalk is frequently furnished. 

 They are variously formed, sometimes co- 

 loured, and sometimes without colour. In 

 the Lime-tree, (Tilia europsea) the floral 

 leaf is single, oblong, and of a pale hue, 

 fig. 3. In Marjoram, (Origanum) they are 

 numerous, highly coloured, and imbricated 

 over the calyces. 



Thorns, growing from the interior of the plant, 

 and therefore not coming ofl" with the bark. 

 They are terminal in the Buckthorn ; late- 

 ral in the Hawthorn ; on the leaves in the 

 Cotton-thistle, (Onopordon) ; on the calyx 

 in Carduus; and on the fruit in Thorn- 

 apple. They are either simple, as in 

 Prunus, and Rhamnus, fig. 4 ; or branched, 

 as in the Barberry, and Ulex, fig. 5. 



