长白山金星蕨 chang bai shan jin xing jue

Plants 45-60 cm tall. Rhizomes long creeping, nearly black and glabrous. Fronds approximate; stipes 15-25 cm, bases nearly black, occasionally covered with few dark brown ovate scales, distally stramineous, glabrous or sometimes with sparse grayish white fine and long hairs; laminae oblong-lanceolate, 25-35 × 8-12 cm, clearly tapering to bases, pinnate-pinnatifid, acuminate and pinnatifid at apices; pinnae 20-25 pairs, alternate, obliquely spreading, sessile, proximal 3 or 4 pairs gradually shortened, proximal pair of pinnae 1-2 cm, lanceolate and reflexed proximally; middle pinnae linear-lanceolate, 4-6 × 0.9-1.3 cm, bases minutely broadened, symmetrical, subtruncate, pinnatifid nearly to costae, apices acuminate; segments ca. 15 pairs, proximal pair slightly longer, middle ones oblong, 4-6 × 2-3 mm, sparsely shallowly and thickly serrate along margins, rounded-obtuse at apices. Veinlets visible, oblique distally, 5(or 6) pairs per segment, proximal pair arising from bases of costae. Laminae thinly herbaceous, grass-green when dry, abaxially with orange-yellow spherical glands, costae villous, sparsely so along costules; adaxially with denser appressed short acicular hairs along grooves and veins. Sori small, orbicular, 3 or 4 pairs per segment, dorsifixed above middle of veinlets, slightly closer to margins; indusia small, orbicular-reniform, grayish yellow, membranous, hairy, persistent.

● Meadows; 600-1400 m. Jilin (Changbai Shan).

Parathelypteris changbaishanensis is similar to P. nipponica in outline but differs by proximal 2-4 pairs of pinnae shortened, pinnae with dense orange-yellow spherical glands and villous abaxially, and growth in meadows.