台灣植物誌 第二版  Flora of Taiwan, 2^nd edition    Vol. 1

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 ILAN: Bonbon, Kao 5920. HSINCHU: Kuanwu, Shieh & Tsai s. n. 1973. NANTOU: Guangao, Huang & Liang s. n. 1981*. CHIAYI: Mt. Alishan, Jan s. n. 1970.

6. HEMIONITIS L. 澤瀉蕨屬

Rhizome short, suberect, dictyostelic, clothed with narrow brown scales. Fronds crowed, small or of moderate size, herbaceous, somewhat dimorhpic, the sterile on short stipes, the fertile on long stipes, all roundish or cordate or palmately lobed, never compound nor elongate; Veins reticulate without included free veinlets. Sori along all veins of fertile fronds; annulus of 14-20 thickened cells. Spores tetrahedral, reticulate-spinulose.
Eight species of which seven ate in tropical America and one in the Orient; one species in Taiwan.

1. Hemionitis arifolia (Burm. F.) T. Moore, Ind. Fil. 114. 1859; Shieh in F1. Taiwan 1: 314. pl. 110. 1975. 澤瀉蕨 Pl.105
Asplenium arifolium Burm. F., F1. Ind. 231. 1768.
Rhizome short, suberect, clothed with narrow brown scales. Stipes maroon to black, scaly at the base; stipes of sterile fronds 4-9 cm long, of firtile fronds 15-30 cm long; lamina dimorphous, simple, the sterile narrowly ovate to oblong, 4-9 cm long, the base deeply cordate, apex rounded, thickly coriaceous, lower surface bearing scattered scales and hairs like those on the stipe, with smaller and more numerous hairs on the edge; the fertile usually about as long as sterile or shorter, the apical part narrower, oblong to triangular. Sori continuous along the veins, forming a network all over the lower surface.
Distributed in India, Ceylon, Burma, Indo-China, Taiwan, the Philippines and Malaysia.
TAINAN: Chocheng, Huang s. n. 1973, Shieh & Tsai 6581*. KAOHSIUNG: Taliao, Kan s. n. 1931.

7. PITYROGRAMMA Link 粉葉蕨屬

Rhizome ascending, short, dictyostelic, clothed with narrow scaales. Fronds crowed; stipes polished, scaly at base. Dark-coloured; lamina typically obate and 2-3-pinnate, mediocre or small, herbaceous to subcoriaceous, lower surface more or less densely ceraceous; veins free. Sori borne along the whole length of the veins on the lower surface of fertile leaflets, exindusiate, without paraphyses; annulus of 13-24 thickened cells. Spores tetrahedral, dark, with irregularly reticulateribbed epispore.
About 40 species, mostly in tropical America, a few in Africa and Samoa; one species in Taiwan.

1. Pityrogramma calomelanos (L.) Link, Handb. Gew. 3: 20. 1883; Shieh in F1. Taiwan 1: 315. pl. 111. 1975. 粉葉蕨 Pl.106
Acrostichum calomelanos L., Sp. Pl. 2: 1072. 1753.
Rhizome short, erect, clothed with narrow brown scales. Stipes 20-55 cm long, dark purplish, polished, scaly towards the base; lamina 30-60 cm long, bipinnate or tripinnatifid at base, papyraceous, lower surface covered throughout with a white waxy powder, the segments oblique, elliptic, toothed. Sporangia seated along the veins on the lower surface.