240 PRINCIPLES OF BOTANY, ETC. 
8. Opposite, (oppositiflorus), when the particular. 
flower-stalks stand quite opposite to one another. 
9. Opposite to the leaf, (oppositifolius), when it 
stands on the cther side exactly opposite to the leaf, 
10, Beside the leaf, (/aterifolius), when it sits on, 
the stem by the side of the leaf. 
11. Under the leaf, (extrafoliaceus). when it is 
seated under the leaf. 
12. Between the leaves, (intrafoliaceus), when it is 
seated on the stem between the leaves. 
§ 18. 
The leaf-stalk, (petiolus), bears only leaves. Its 
kinds are, 
1. Round, (eres), as in most plants. 
2. Compressed, (compressus), asin the trembling 
poplar, Populus tremula. 
3. Channelled, (canaliculatus), when there is on 
the surface a deep’ longitudinal furrow, as in the 
butter-bur, Tussilago Petasites, Angelica Archan- 
gelica. | | 
4. Winged, (a/atus), when there is a leat-like ex- 
pansion on two opposite sides of the leaf-stalk, as 
in the orange, Citrus aurantium, fig. 2. 
N. ‘The petiolus is denominated, as to figure and 
surface, like the stem. } 
§ 19. 
Stipe, (stipes), ‘This term is applied only to the 
Filices, Fungi and Palms. The different sorts of it 
are denomimated like those of the stem. 
tn 
