335 
4.—DICKSONIA. 
. D. Barometz, Link ; Hook. et Bak. 1. c. 49. Common in ravines, 
"'aimoshan, Hongkong New Territory ; 
Lofoushan. 
5.—HYMENOPHYLLUYM. 
Key to species. 
l. Fronds about 6 inches long... an 2. 
Fronds under 3 inches long... = 3. 
2. Rachis winged to the base... ef) o 3. Javanicum. 
Rachis not winged 2. polyanthos, 
3. Stalk very short ; frond bipinnatifid ... 4. oxydon. 
[=] 
o 
ve 
paN 
Stalk about 1 inch ET frond t ps 
natifid l. fenellum. 
. H. tenellum, Kuhn; Hook. et Bak. Syn. Fil. 57. Taimoshan, 
Hongkong New Territory. 
. H. polyanthos, Swartz; Hook. et Bak. l.c. 60. Lantao am, 
Taimoshan and Maónsban, Hongkong New Territo 
. H. javanicum, Spreng.; Hook. et Bak. 1. c. 60. bonas on 
granite rocks at 2500 ft., Hongkong New Territory ; slopes 
of the Phoenix Mt., Swatow ; Hoifung ; Lofoushan 
. H. oxydon, Bak. in Journ, Bot. 1890, 262. Taimoshan on 
rocks at 2500 ft., Hongkong New Territory. 
6.—TRICHOMANES. 
Key to species. 
1. Fronds 5 inches or more long... abe 2. 
Fronds 2 inches or less in length 5. 
2. Stalk winged to the base .. 8. orientale, 
Stalk not ‘winged, or slightly sc so 3 
3. Stalk very short or frond sessile e. 9. auriculatum. 
Stalk 2 inches or more long Sr 4. 
4. Fronds 8 inches or more long . 7. radicans. 
Fronds 6 inches or less long 25 + 10. rigidum. 
5. Fronds under 1 inch long š ss 6. 
Fronds over 1 inch long. “xs T r^ 
6. Fronds fan-sha gan oss ~~ 2; parvulum. 
Fronds obovate- EE Les l. Henzaianum. 
7. Stalk 4 to 4 inch long .. x ond 8. 
Stalk zhorier or none ... es Hes 9. 
8. Fronds glabrous 5. humile, 
Nerves of fronds puberu ulou 6. Matthewii. 
9. Fronds suborbicular or bide rhom- 
boidal, not tapering below 4, latemarginale. 
Fronds pee Debes oblong-rhom- 
boidal 3. intramarginale, 
. T. Henzaianum, Parish; Hook. et Bak. Syn. Fil. 75. Mt, 
ame Hongkong 
