合囊蕨 he nang jue

Marattia pellucida C. Presl, Suppl. Tent. Pterid. 10. 1845; M. haenkeana C. Presl; M. vestita Christ.

Rhizomes erect, globose, up to 40 cm tall. Fronds up to 2 × 1.5 m. Stipes shorter than laminae, ca. 2 cm in diam., covered with cortical spines and irregularly toothed, narrowly lanceolate brown scales. Laminae oblong in outline, tripinnate, herbaceous to papery; pinnae up to 60 cm; ultimate pinnules narrowly elliptic, 6-10 × 1-1.5 cm, bases cuneate, margins serrate, apices acuminate; veins free, 1.5-2 mm apart, simple, not forked; costae with small, castaneous, thin scales with bullate bases. Synangia medial or supramedial, 1-2.2 mm, with up to 8- or 9-cellular uniseriate paraphyses, branched paraphyses rare.

Forests on slopes, very rare. Taiwan (Lan Yu) [Philippines].