| A |
Serrate leaves |
| |
| |
Secondary veins often leading to teeth (see drawing) |
Dilleniaceae |
|
| B |
Palmately veined |
| |
| (a) |
Petiole pulvinate at base and apex |
| (i) |
Wiry pulvinate petiole |
Menispermaceae |
| (ii) |
Petiole just swollen (some can have
entire leaves) |
Bauhinia sp. (Caesalpiniaceae) |
| (b) |
Petiole swollen without being pulvinate |
Dioscoreaceae |
| (c) |
Lateral main veins following the base of the margin
(see drawing), strong medicinal smell |
Aristolochiaceae |
|
| C |
Obscure venation / succulent / coriaceous (leathery)
leaves |
| |
| (a) |
Adventitious roots |
| |
(i) |
Axis and petiole light grey, leaves succulent |
Markea sp. (Solanaceae) |
| |
(ii) |
Leaves coriaceous, apex of the stem usually detaches
from the trunk and hanging |
Marcgraviaceae |
| (b) |
No Adventitious roots. Spine like scars or small
spines, twigs green and short petioles |
Polygalaceae |
|
| D |
Petiole swollen / thickened / relatively long |
| |
|
| E |
Spines |
| |
| (a) |
Spines scattered along the axis |
| |
(i) |
Palmate venation |
Smilacaceae |
| |
(ii) |
Pinnate venation |
Solanaceae |
| (b) |
Spines by two spine-like scars always near petiole |
Polygalaceae |
|
| F |
Adventitious roots: plant climbing appressed to the
trunk |
| |
| (a) |
Leathery leaves, plant often ornamental, many
aromatic |
Araceae |
| (b) |
Parrallel venation |
| |
(i) |
Leaves pinnate |
Desmoncus sp. (Arecaceae
(Palmae)) |
| |
(ii) |
Leaves entire or lobed |
Cyclantaceae |
| (c) |
Adventitious roots in a first stage
than plant scandent or hanging |
Marcgraviaceae |
|
| G |
|
| H |
|
| I |
|
