186 
CHRIST. 
101. Angiopteris cartilagidens Christ in Bull. Herb. Boiss. 6 (1906) 207. 
Luzon, Province of Benguet, Baguio (Loher) , alt. 1,400 m. 
One of the most sharply defined species, characterized by its dentation, texture 
and scales. 
Endemic. 
102. Angiopteris similis Presl in DeVriese et Harting Monog. Maratt. 17. 
Mindanao, Lake Lanao, Camp Keithley (115 Mrs. Clemens) January, 1906, 
alt. 660 m. 
A species with thinly papyraceous texture, shining, pale green, the nerves 
recurrent, slender, slightly visible, the sori small, dark brown, close to the 
margin, the pinnules large, 18 cm. long, 21 mm. broad, the teeth prominent only 
at the sterile apices. 
Java. 
103. Angiopteris angustifolia Presl ex DeVriese et Harting Monog. Maratt. 
18. 
Luzon, Province of Bataan, Lamao River (3791 Merrill) January, 1904. Ne- 
gros, Gimagaan River (1659 Whitford) May, 1906. Mindanao, Lake Lanao 
(Mrs. Clemens) April, 1906: Province of Surigao (240 Bolster) April, 1906: 
District of Davao, Todaya (1459 Copeland) October, 1904. 
This seems to be the most widely distributed species in the Archipelago, and 
was first collected by Cuming. It is distributed from Annam, leg. Cadiere, to 
Formosa, leg. Faurie, south to the Sunda Islands. 
104. Angiopteris caudata DeVriese et Harting Monog, Maratt. 20. 
Luzon, Province of Benguet, Mount Tonglon (Lolier) April; 1906; Baguio 
(5126 Currcm) August, 1906; (5930 Elmer) March, 1904: Province of Laguna, 
Mount Maquiling (Loher) June, 1906. 
Pinnules strongly narrowed, the upper ones 8 mm. broad, very gradually 
narrowed into the long pointed apex. The pinnae resemble those of Pteris 
longifolia Linn. 
105. Angiopteris pruinosa Kze. Schkulir Suppl. 1: t. 91. 
Negros, Gimagan River (1652 Whitford) May, 1906. 
Fronds bluish white beneath quite similar in color to those of Lomaria glauca 
Blume. 
CHRISTENSEN I A Maxon. 
106. Christensenia Cumingiana n. sp. 
Omnium reliquarum formarum adhuc cognitarum minima, rhizomate 
crasso, brevi, carnoso, radicoso, foliis approximate, junioribus subfasci- 
culatis, stipite usque ad 14 cm. longo cum costis nervisque rufostramineo 
furfuraceo, fronde tarn simplici ovata breviter acuta basi subcordata 
8 ad 13 cm. longa 3 ad 5 cm. lata, repanda aut grosse dentata, quam 
tripartita, pinna centrali late ovata 11 cm. longa 5 cm. lata acuta longe 
et anguste cuneata, lobatq-repanda, pinnis lateralibus adnatis valde inae- 
qualibus postice cordato-auctis, antice anguste cuneatis 9 cm. longis 3 cm. 
latis, ner.vis manifestis, ca. 10 utrinque, rectis patentibus interstitio ca. 1 
cm. lato, facie superiore laevi inferiore albida, stomatibus rotundis dense 
tecta, laevi, synangiis vix 1.5 mm. latis (deciduis aut immaturis) brunneis 
inter nervos biseriatis, ca. 4 pro serie. Textura modice succulenta. 
