Morphological characteristics of rattan pine

Large native plants. Underground stems are long and creeping. The main stem on the ground is woody vine-like, stretching and climbing up to several meters, cylindrical, with a diameter of about 2 mm and sparse leaves; Leaves are spirally arranged, attached, ovate-lanceolate to subulate, long 1.5-3.0 mm, wide 0.5 mm, base protruding, arc-shaped, sessile, apex tapering, membranous 1, long awn or awn shedding, 2-5 mm long. Sterile branches are soft, yellow-green, cylindrical, with branches and leaves about 4 mm wide and many secondary branches with different lengths; The leaves are arranged in a spiral shape, but the base of the leaves is twisted, making the branchlets flat, dense, inclined upward, subulate and curved upward, 2-3 mm long and 0.5 mm wide, with drooping base, no stalk, tapering apex, long awn, full edge, curved back, depressed abdomen, dull midvein and grass. Fertile branches are soft, reddish brown, flat and multi-branched; The leaves are spirally arranged, sparse, adherent, scaly, about 0.8 mm long and 0.3 mm wide, the base is downward, sessile, the top is tapering, awned, and the edge is entire; Bracts are similar to the main stem, but slightly smaller; Sporangial spikes of 6-26 are born in groups at the top of multi-branched spore branches, arranged in a conical shape, and the total stalk and petiole are upright, curved, 1-4 cm long, 2-3 mm in diameter and reddish brown; Spore leaves are broadly ovoid, imbricate, 2-3 mm long and 65438 0.5 mm wide, with sharp tips, long membrane awns, irregular blunt teeth at the edges and film thickness; Sporangium is born in the axil of spore leaf, surrounded, round and kidney-shaped, yellow.