156 
CHRIST. 
10. Hymenophyllum formosum Brackenr. U. S. Explor. Exped. 16 (1854) 
268. t. 32. f. 3. 
Mindanao, Mount Apo (1442 Copeland) October, 1904, alt. 1,800 m. ; (340 
DeVore & Hoover) May, 1903. Our plants match the form represented by Tab. 1ft 
Van den Bosch, Hymenophyllaceae Javanicae. 
11. Hymenophyllum Junghuhnii Van den Bosch Hymen. Jav. 60. Tab. Ifi. 
Luzon, District of Lepanto, Bagnen (1921 Copeland) November, 1905, alt. 
1,950 m. Mindanao, Province of Misamis, Mount Malindang. (4638 Mearns & 
Hutchinson) May, 1906. 
A form with very large sori and with broad segments. 
The Philippine plants referred by various authors to H. dilatatum Sw., are 
referable to the two above species. 
^12. Hymenophyllum australe Willd. Sp. PI. 5: 527. 
Luzon, District of Lepanto, Mount Data (1873 Copeland) October, 1905; 
Province of Benguet, Mount Tonglon (Loher) ■ (5053 Curran) August, 1906. 
Mindanao, Mount Apo (324 DeVore & Hoover) May, 1903. 
The Philippine form has very narrow segments and is very compound, quadri- 
pinnatifid. Under the lens the margins are very finely denticulate. 
TRICHOMANES Linn. 
13. Trichomanes parvulum Poir. in Lam. Encycl. 8: 46. 
Luzon, Province of Bataan, Mount Mariveles (177 Whitford) May, 1904. 
14. Trichomanes diffusum Blume, Enum. 225. 
Luzon, Province of Laguna, Mount Maquiling (5137 Merrill) March, 1906, 
300 m. alt. Mindanao, Province of Zamboanga, San Ramon (1652 Copeland) 
April, 1905, 700 m. alt. 
15. Trichomanes nitidulum Van den Bosch Hymen. Jav. 21. 
Luzon, Province of Benguet, Baguio (6023 Elmer) March, 1904. 
16. Trichomanes rhomboideum J. Sm. in Hook. Journ. Bot. 3: 417; Van den 
Bosch Hymen. Jav. Tab. 21f. 
Luzon, Province of Bataan, Mount Mariveles (3121 Merrill) October, 1903; 
(206 Copeland) January, 1904. 
This form, of the Cephalomanes group which is richly developed in the Philip- 
pines, is distinguishable by its rounded pinnae, its elongated aristate teeth and 
long sori. 
17. Trichomanes Javanicum Blume, Enum. 224; Van den Bosch Hymen. Jav. 
Tab. 22. 
Luzon, Province of Rizal, Mabacal (Loher) March, 1906; Province of Laguna, 
Mount Maquiling (Loher) January, 1906; Province of Bataan, Mount Mariveles 
(263, 513 Whitford) July, 1904; (2397 Borden) January, 1905; (2420 Meyer) 
January, 1905; (207 Copeland) February, 1904. Negros, Gimagaan River (1603 
Whitford) March, 1906. Palawan (578 Foxworthy) April, 1906. 
Common and widely distributed in the Philippines. 
Var. intercalatum n. var. 
Soris margini anteriori, apici saepeque parti superiori marginis pos- 
terioris impositis numerosis (12) longe exsertis campanulato-clavatis ore 
non dilatato, dentibus marginis posterioris elongatis aristatis conspicuis. 
Pinnis saepe dissectis. 
Luzon, Province of Laguna, Mount Maquiling (Loher) January, 1906; Province 
of Rizal, Oriud (Loher) February, 1906; Province of Benguet, Sablan (6214 
Elmer) April, 1904. 
