1936 CLVI. FILICES. [Angiopteris. 



1. A. evecta (evectic), Hofm.; Hook, and Bak. Syn. B'llic. 440; Benth. 

 hi. Aiistr. vii. 694. Trunk thick and erect, attaining sometimes Z or an. 

 Fronds spreading very broad, sometimes 12 to 15ft. long, on a more or less 

 pubescent stipes but otherwise quite glabrous, green and shming. beoonaary. 

 pinnules or segments linear-oblong, 3 to Sin. long, abruptly acuminate, crenate- 

 serrate or rarely entire. Veins nearly parallel, diverging from the midrib, entire 

 or forked. Spore-oases 4 to 6 pairs in each sorus.— Hook, and Grev. Ic. J^iiio. t, 

 86; Hook. Filic. Exot. t..75 ; Bail. Litho. Ferns Ql. 11. 



Hab.: Bookingham Bay. W. Hill, Dallachy ; Daintree River, Fitzalan; Triaity Bay Ranges, 

 F. M. Bailey ; gullies of the Blaokall Range. 



7. MARATTIA, Sm. 

 (After J. F. Maratti, an Italian botanist.) 



Rhizome large, tuberous. Fronds large, twice or thrice pinnate, the stipes 

 with adnate auricles at the base. Spore-cases completely united in 2 rows, in 

 oblong boat-shaped sori, placed side by side in a continuous row close to the 

 margin of the pinnules or between the midrib and the margin, the spore-cases 

 opening inwards in longitudinal slits without any other external mark to 

 distinguish them, the sorus appearing divided into so many cells in 2 rows. 



A genus of few species dispersed over the tropical regions of the New and the Old World and 

 the southern extratropioal ones of the Old World. The only Australian species has a general 

 range in the Old World. — Benth. 



1. M. fraxinea (ashen), Sm. Ic. hied. t. 48 ; Benth. H. Av^tr. vii. 695. 

 Potato Fern. Fronds 9 to 12ft. long [Dallachy). Secondary pinnules or 

 segments oblong-lanceolate, acuminate, often Sin. long and l^in, broad, but much 

 smaller in other specimens, with numerous parallel simple or forked transverse 

 veins, the barren point usually serrate, the fertile portion entire or shortly serrate. 

 Boat-shaped sori rather above 1 line long, oblique and close together in a < 

 continuous row close to the margin, the vein on which they rest sometimes 

 slightly expanded and fringed. Upper surface of the sorus concave, the slits 

 and cells indicating the number of united spore-cases, 5 to 8 pair in each sorus. 

 —Hook, and Bak. Syn. Filic. 440; Bedd. Ferns S. Ind. t. 79; M. salicina, 

 Sm.; F. V. M. Fragm. v. 114; Bail. Litho. Ferns Ql. 11. 



Hab.: Rockingham Bay, IK. Hill, Dallachy; York Peninsula, N, Taylor; Daintree River, 

 Fitzalan; Bowen, WoolU. 



Spread over the tropical and southern extratropioal regions of the Old World. The species 

 should include several of those proposed by De Vriese, Monogr. Maratt. 3. 



8. CERATOPTERIS, Brongn. 



(From keras, keratos, a horn, and pteris, a fern ; horned fern.) 



Fertile fronds compound with narrow linear segments. Sori of single globular 

 spore-cases opening irregularly, with an incomplete or rudimentary ring, inserted 

 on longitudinal veins between the midrib and the margins of the segment. 

 Indusium continuous and membranous, formed of the revolute margin of the 

 segmunt. Spores large, marked with concentric rings. 



The genus is limited to the single Australian species which is widely distributed over the 

 tropical regions of the New and the Old World. 



1. C. thalictroldes (Thalictrum-like), Brongn. ; Hook. Spec. Filic. ii. 285, 

 Syn. Filic. 174 ; Benth. Fl. Amtr. vii. 695. An aquatic or semiaquatic 

 fern. Fronds twice or thrice pinnate, the fertile ones 6in. to 1ft. high, the 

 secondary or tertiary pinnae short, with few distinct linear segments f to above 

 lin. long, the revolute margins enclosing the fructification of the whole length. 

 Barren fronds distinct, shorter and more spreading, with fewer short broad 



