Table 2.
Characters used by various authors to distinguish C. hunua and C. ruamahanga
| Present study |
|||||||
|---|---|---|---|---|---|---|---|
| Character | Taxon | Kirk (1899) | Cheeseman (1925) | Allan (1961) | Webb et al. (1988) | Mean ± s.d. | Range |
| Internode (mm) | C. hunua | Usually not >5 | 2·5 ± 0·9 | 1·5–3·6 | |||
| C. ruamahanga | Up to 10 | 4·2 ± 2·1 | 1·9–9·8 | ||||
| Leaf length* (mm unless indicated) | C. hunua | 1/16–1/14 inch | 1/15–1/10 inch | 1–2 | 0·7–2·8 | 1·7 ± 0·4 | 0·8–2·1 |
| C. ruamahanga | 1/16 inch | 1/15–1/12 inch | 1·5–2·5 | 1·3–5·0 | 2·0 ± 0·6 | 1·1–2·9 | |
| Leaf width (mm) | C. hunua | 0·3–0·6 | 0·5 ± 0·1 | 0·3–0·7 | |||
| C. ruamahanga | 0·4–1·0 | 0·5 ± 0·1 | 0·3–0·8 | ||||
| Leaf tip angle (degrees) | C. hunua | Obtuse | Obtuse or subacute; acute | Obtuse to subacute | Acute | 31·3 ± 17·3 | 8·4–58·4 |
| C. ruamahanga | Acute or apiculate | Acute or apiculate | Acute to apiculate (sometimes long-apiculate) | Sharply acute | 19·3 ± 7·5 | 5·6–31·5 | |
| Apiculus (degrees) | C. hunua | – | 0·04 ± 0·11 | 0·0–0·1 | |||
| C. ruamahanga | Shortly acuminate or apiculate | 0·08 ± 0·09 | 0·0–0·3 | ||||
| Peduncle length (mm) | C. hunua | Usually longer than leaves | Longer or shorter than leaves | Short | > Calyx, 0·5–1·3 | 0·9 ± 0·4 | 0·2–1·9 |
| C. ruamahanga | Sessile or on peduncles shorter than leaves | Shorter than leaves | Sessile or subsessile | > Calyx, 0·5–1·0 | 1·0 ± 0·6 | 0·1–5·4 | |
| Peduncle width (mm) | C. hunua | Thickened | 0·3 ± 0·1 | 0·1–0·7 | |||
| C. ruamahanga | 0·2 ± 0·1 | 0·1–0·6 | |||||
| Flower diameter (mm unless indicated) | C. hunua | Minute | 1/15 inch | ±1·75 | 2·2–3·0 | 1·6 ± 0·3 | 1·0–2·8 |
| C. ruamahanga | Minute | 1/20–1/15 inch | ±1·5 | 1·8–2·5 | 1·6 ± 0·4 | 0·9–2·7 | |
| Calyx length (mm) | C. hunua | < Petals | 0·5–0·7 | 0·7 ± 0·2 | 0·3–1·1 | ||
| C. ruamahanga | > Petals | 0·8–1·0 | 1·1 ± 0·3 | 0·5–1·7 | |||
| Calyx lobe apex angle (degrees) | C. hunua | – | Acute | Obtuse | Obtuse or apiculate | 35·7 ± 12·3 | 20·0–60·0 |
| C. ruamahanga | Acuminate | Acuminate | Acuminate | Acute | 22·2 ± 9·6 | 5·0–50·0 | |
| Petal length (mm) | C. hunua | Longer than sepals | > Calyx | > Calyx lobes | 1·0–1·4 | 1·0 ± 0·2 | 0·6–1·5 |
| C. ruamahanga | Shorter than sepals | < Calyx | < Calyx lobes | 1·0–1·3 | 1·2 ± 0·3 | 0·5–1·7 | |
| Petal apex angle (degrees) | C. hunua | - | Acute or subacute | Acute to subacute | Subacute | 31·0 ± 12·3 | 10·0–60·0 |
| C. ruamahanga | acute | - | Acute to subacute | Acute or sharply acute | 28·6 ± 18·9 | 8·0–64·0 | |
Character mean, standard deviation and range are presented from the present study (vegetative character sample sizes: C. ruamahanga n = 30; C. hunua n = 17; floral character sample sizes: C. ruamahanga n = 17; C. hunua n = 8).
* Leaf length differs in Cheeseman (1906, 1925) between the keys and descriptions for T. acutifolia and T. pusilla. The measurements presented here are those given by Cheeseman (1906, 1925) in the description.