|
|
|
Athyrium Roth
蹄蓋蕨屬
Pseudocystopteris Ching
Terrestrial ferns; rhizome usually stout and erect, rarely long creeping; scales thin, lancrolate or ovate and light brown, some narrow and black . Stipe green, stramineous, or purple, with 2 vascular strands at base and uniting into U-shaped strand at middle rachies; lamina pinnate to decompound; veins all free; rachis and costae grooved and connected on dorsal side, some species with spines on the dorsal side of rachies, costae and costulate. Sori oblong or round, usually crossing a veinlet, some species with Diplazium type. Indusia linear, J-shape or reniform.
About 24 species in Taiwan, most species in Taiwan grown at altitude 1000 to 3000 m.
|
|
|
|
| 1 |
Rhizome long creeping |
|
(2) |
| + |
Rhizome erect |
|
(5) |
| |
|
|
|
| 2 (1) |
Fronds bipinnatifid or more complex |
|
(3) |
| + |
Fronds pinnatifid or pinnate |
|
(4) |
| |
|
|
|
| 3 (2) |
Fronds bipinnate or tripinnatifid |
|
Athyrium nipponicum |
| + |
Frond tripinnate or more complex |
|
Athyrium atkinsonii |
| |
|
|
|
| 4 (2) |
With distinct apex pinnae, later pinnae with petiole |
|
Athyrium cumingianum |
| + |
Without distinct apex pinnae, later pinnae without petiole |
|
Athyrium sheareri |
| |
|
|
|
| 5 (1) |
Without spines on rachis, costae and costulate |
|
(6) |
| + |
Spines on rachis, costae or costulate |
|
(13) |
| |
|
|
|
| 6 (5) |
Pinnate, or with free pinnulate in the base of pinnae |
|
(7) |
| + |
Bipinnate or more complex |
|
(9) |
| |
|
|
|
| 7 (6) |
Fronds glabrous |
|
Athyrium anisopterum |
| + |
Frond pubescent, densely covered with unicellular hairs |
|
(8) |
| |
|
|
|
| 8 (7) |
Margin of pinnae entire or crenate, with obviouly auricaulate |
|
Athyrium nakanoi |
| + |
Margin of pinnae serrate, sometimes with free pinnulate in the base of pinnae |
|
Athyrium australlium |
| |
|
|
|
| 9 (6) |
Bipinnatifid, fronds covered gland hairs, most pinnae reflex |
|
Athyrium reflexipinnum |
| + |
Bipinnate or more complex |
|
(10) |
| |
|
|
|
| 10 (9) |
Sori short straight, less variable |
|
(11) |
| + |
Sori reniform, or variable |
|
(12) |
|
|
|
List of lower taxa
| Related Links (opens in a new window) |
|
Treatments in Other Floras @ www.efloras.org
Other Databases
|
|
|
|
|
|
|
|
|
