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Ceratozamia aurantiaca, a new cycad species from Oaxaca, Mexico, is endemic to lowland karst tropical rainforests of the northern mountains (Sierra Norte region).
Trait | C. aurantiaca | C. subroseophylla | C. leptoceras | C. robusta |
---|---|---|---|---|
Trunk | Erect to decumbent | Erect to decumbent | Erect to decumbent | Erect |
Color of emerging leaves | Orange-brown to orange | Yellowish-brown | Green to copper-green | Reddish-brown |
Crown of leaves | Open | Open | Open | Closed |
Texture of leaflets | Coriaceous | Papyraceous | Membranaceous | Papyraceous |
Veins on abaxial surface of leaflets | Not visible | Visible | Visible | Not visible |
Apex of female cone | Mucronate | Mucronate | Acute | Acuminate |
Key | Name Variable and Unit | F | d.f. | p | LD Axis Load |
---|---|---|---|---|---|
A | Length of petiole (cm) | 18.27 | 24.93 | 1.30 × 10−5 | 0.309 |
B | Length of rachis (cm) | 0.503 | 23.15 | 0.6112 | −0.024 |
C | Number of leaflet pairs | 12.53 | 24.81 | 0.0001735 | 0.103 |
D | Length of median leaflets (mm) | 1.682 | 21.84 | 0.2092 | 0.032 |
E | Distance between median leaflets (mm) | 12.56 | 23.87 | 0.0001877 | −0.278 |
F | Width of median (mm) | 20.94 | 24.59 | 4.899 × 10−6 | −0.227 |
G | Width of basal leaflets (mm) | 7.277 | 22.46 | 0.003662 | −0.033 |
C. aurantiaca vs. C. robusta |
C. aurantiaca vs. C. subroseophylla |
C. subroseophylla vs. C. robusta |
|
---|---|---|---|
A (length of petiole) | 4.121 * | 9.492 *** | 5.371 ** |
B (length of rachis) | 1.247 | 0.4368 | 0.8097 |
C (number of leaflet pairs) | 3.066 | 7.815 *** | 4.749 ** |
D (length of median leaflets) | 1.317 | 0.927 | 2.244 |
E (distance between median leaflets) | 3.804 * | 7.942 ** | 4.138 * |
F (width of median leaflets) | 8.635 *** | 6.692 *** | 1.942 |
G (width of basal leaflets) | 4.287 * | 0.4224 | 3.864 * |
C. aurantiaca | C. robusta | C. subroseophylla | Total | |
---|---|---|---|---|
C. aurantiaca | 15 | 1 | 0 | 16 |
C. robusta | 2 | 18 | 0 | 20 |
C. subroseophylla | 0 | 0 | 11 | 11 |
Total | 17 | 19 | 11 | 47 |
C. aurantiaca | C. robusta | C. subroseophylla | |
---|---|---|---|
C. aurantiaca | - | 5.07 × 10−6 | 7.42 × 10−8 |
C. robusta | 10.26 | - | 1.80 × 10−5 |
C. subroseophylla | 7.35.56 | 13.32 | - |