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134 COPKLANI). 
Pteris tripartita Sw. 
Along the Alag River at 200 ni. alt. (No. 5956), stipe 2.5 m. liigb. 
Common in the Philippines. 
Africa to Polynesia. 
HISTIOPTERIS (Agardh) J. Sm. 
Histiopteris rncisa (Thunb.) J. Sm. 
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In an old clearing at 700 ni. alt. (No. 5955). 
On many mountains in the Philippines. 
PTERIDIUM Gleditsch. 
Pteridium aquilinum (L.) Kuhn. 
With the preceding species (No. 5954) ; a large form of this common 
cosmopolite. 
MONOGRAM MA Schkuhr. 
Monogramma trichoidea J. Sm. 
On a rotten stump in ridge forests at 600 m. alt. (No. 5857). 
Luzon and Mindanao^ in the rain forest. 
Monogramma daresecarpa Hook. 
On tree-trunks in humid forests at 250 m. alt. (No. 5856), 
Also kno-\vn from Negros in similar situations at 100 m. alt. 
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PLEUROGRAMME Presl. 
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Pleurogramme loheriana Christ in Bull. Herb. Boiss. II 6 (1006) lOOG. 
On mossy trees in the ridge forest at 1,400 m. alt. (No. 5855) . 
These specimens are rather more slender than those known from Luzon, and 
not forked. A stouter relative grows in Palawan and IMindanao. 
VITTARIA Smith. 
Vittaria amboinensis F^. 
Epiphytic in the ridge forest at 1,100 m. alt. (No. 5865). 
Found also at the same altitude on Mount Mariveles. , 
Amboina, Burmah. 
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Vittaria elongata Sw. 
Epiphytic at 1,800 m. alt. (No. 5864). 
Throughout the Philippines. 
India to Polynesia and New South "Wales. 
Vittaria sp. near V. elongata Sw. 
Pendent from mossy trunks at 1,400 m. alt. (No. 5860). 
Very similar to the preceding, but with the indusiuui thinner and not reaching 
the margin. 
Vittaria sp. near V. elongata Sw. 
Epiphytic in humid forests at 200 m. alt. (No. 5863). 
This is possibly true V. elongata; it differs from the plant to which I have 
given that name, most conspicuously in the very lax venation of the latter. 
Vittaria sp. near V. elongata Sw. 
Epiphytic in dense thickets at 175 m. alt. (No. 5862). A very large form 
previously collected near the base of Mount TTalcon by Merrill (No. 4044) and 
McGregor (No. 315). 
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