贵州实蕨 gui zhou shi jue

Campium christensenii Ching, Bull. Fan Mem. Inst. Biol. 2: 214. 1931.

Rhizome shortly creeping, robust, ca. 1 cm in diam., densely scaly; scales blackish brown, lanceolate, ca. 9 mm, margin maple-colored, entire. Fronds tufted; sterile fronds pinnate; stipe 30-40 cm, base ca. 4 mm in diam., base densely covered with lanceolate scales; lamina grayish brown when dry, elliptic, 40-60 × 20-25 cm, thinly herbaceous, apical part pinnatipartite into lanceolate lobes, bulbil subterminal; rachis not winged, densely covered with lanceolate brown scales especially when young; pinnae 6-10 pairs, lanceolate, 6.5-12 × 1.2-2 cm, base truncate to subcordate, margin crenate-serrate, sometimes with an obtuse tooth in each sinus, apex long acuminate, basal pairs subopposite, with short stalk 2-3 mm; secondary veins inconspicuous; veins forming 3 rows of long and narrow areoles, without included free veinlets. Fertile fronds as long as sterile fronds; lamina obviously narrower, linear-lanceolate; pinnae subsessile, 3-4 × ca. 5 mm, base rounded-cuneate, margin entire, apex acuminate. Sporangia inserted throughout abaxial surface.

Near streams in forests; 400-1100 m. Guangxi, Guizhou [Vietnam (Tonkin)].