|
| 1 |
Plants robust, up to 1 m tall; leaves lanceolate, thinly leathery, angled straight with rachis or angled slightly upward. |
|
17 P. squarrosus |
| + |
Plants relatively thin, much shorter than 1 m; leaves of various shapes, textures, and pointing in various directions; strobili not columniform and thin, or without distinct strobili; sporophylls sparse |
|
(2) |
| |
|
|
|
| 2 (1) |
Stems 10-15 cm; leaves narrowly lanceolate, without stipes, sharp at apex. |
|
16 P. nylamensis |
| + |
Stems normally more than 20 cm; leaves linear to ovate, with or without stipes |
|
(3) |
| |
|
|
|
| 3 (2) |
Leaves linear |
|
(4) |
| + |
Leaves lanceolate to ovate |
|
(6) |
| |
|
|
|
| 4 (3) |
Plants 60-75 cm; leaves ca. 1.2 cm ?2 mm. |
|
6 P. cunninghamioides |
| + |
Plants 15-50 cm; leaves 0.8-1.1 cm ?0.5-1.5 mm |
|
(5) |
| |
|
|
|
| 5 (4) |
Leaves ascending and amplexicaul; branches plus leaves ca. 6 mm wide; stems 15-50 cm, main stems ca. 4 mm in diam.. |
|
4 P. pulcherrimus |
| + |
Leaves only slightly ascending and not amplexicaul; branches plus leaves ca. 10 mm wide; stems 10-25 cm, main stems 1-2 mm in diam.. |
|
5 P. taiwanensis |
| |
|
|
|
| 6 (3) |
Leaves ovate, subcordate at base; leaves at middle of plants ca. 7 ?5 mm, large. |
|
15 P. ovatifolius |
| + |
Leaves elliptic-lanceolate or lanceolate, not cordate at base |
|
(7) |
| |
|
|
|
| 7 (6) |
Leaves lanceolate, without stipes, sharp at apex; leaves at middle of plants normally 1.5-2 mm wide |
|
(8) |
| + |
Leaves elliptic or elliptic-lanceolate, with or without stipes, acuminate, acute, or obtuse toward apex; leaves at middle of plants normally over 2 mm wide or smaller but with stipes |
|
(9) |
| |
|
|
|
| 8 (7) |
Leaves papery, sparse, midrib not raised abaxially. |
|
13 P. mingcheensis |
| + |
Leaves thinly leathery, denser, midrib raised abaxially. |
|
14 P. cryptomerianus |
| |
|
|
|
| 9 (7) |
Leaves (at least leaves near bases of plants) amplexicaul, elliptic-lanceolate, without stipes, not lustrous. |
|
12 P. fordii |
| + |
Leaves angled straight or upward, elliptic or elliptic-lanceolate, with distinct or indistinct stipes, lustrous or not lustrous |
|
(10) |
| |
|
|
|
| 10 (9) |
Leaves elliptic or elliptic-lanceolate, with obvious stipes, lustrous |
|
(11) |
| + |
Mature leaves without clear stipes, lustrous or not lustrous |
|
(12) |
| |
|
|
|
| 11 (10) |
Leaves elliptic-lanceolate; leaves at middle of plants normally narrower than 2 mm wide. |
|
7 P. petiolatus |
| + |
Leaves elliptic (obtuse at apex); leaves at middle of plants more than 2.5-4 mm wide. |
|
8 P. austrosinicus |
| |
|
|
|
| 12 (10) |
Leaves elliptic, straight or slightly angled upward, not lustrous. |
|
11 P. henryi |
| + |
Leaves elliptic-lanceolate, much or slightly angled upward, lustrous |
|
(13) |
| |
|
|
|
| 13 (12) |
Leaves obtuse at apex, more than 6 mm wide. |
|
9 P. hamiltonii |
| + |
Leaves sharp at apex, 3-4 mm wide. |
|
10 P. shangsiensis |
|
