Table 1.
Morphological comparison of five major clades (i.e., subgenera of the genus Incarvillea); modified from Chen et al. (2005).
| Characteristics | Incarvillea subgenus Niedzwedzkia | I. subgenus Amphicome | I. subgenus Incarvillea | I. subgenus Pteroscleris | I. subgenus Olgaea |
|---|---|---|---|---|---|
| Habit | Suffruticose | Suffruticose | Suffruticose | Herbaceous | Suffruticose |
| Leaf arrangement | Alternate | Alternate | Alternate | Alternate or radical | Opposite |
| Calyx teeth base | Not swollen | Not swollen | Swollen | Not swollen | Not swollen |
| Inflorescence | Racemose | Racemose | Racemose | Racemose | Paniculate |
| Anther texture | Glabrous | Pilose | Glabrous | Glabrous | Glabrous |
| Capsule shape | Ovate | Elongate, linear cylindrical | Cylindrical | Cylindrical | Cylindrical |
| Capsule texture | Subligneous | Fibrous | Coriaceous | Subligneous | Coriaceous |
| Capsule wing | Six wings, longitudinal | No | No | No | No |
| Capsule dehiscence | Septifragal | Loculicidal | Loculicidal | Loculicidal | Loculicidal |
| Seed wing | Opaque wing | Coma at ends | Hyaline wing | Opaque wing | Hyaline wing |