1. Neckeropsis boniana (Besch.) Touw & Ochyra   疏枝拟平藓   shu zhi ni ping xian

Lindbergia 13: 101. 1987. Porotrichum bonianum Besch., Bull. Soc. Bot. France 34: 97. 1887. Type: Vietnam. Hanoi, H. Bon s.n.

 

Plants slender, yellowish green, somewhat glossy, in loose mats. Primary stems creeping, with a few rhizoids; secondary stems erect or ascending, sparsely branched, to 6–8 cm long, 1.5–2.5 mm with leaves; oval or nearly rounded in cross section, epidermal cells small, thick-walled, in 4–5 layers, surrounding large, hyaline, thin-walled medullary cells; central strand lacking; pseudoparaphyllia not seen. Stem and branch leaves similar, complanate, pseudotetrastichous, flexuose when dry, spreading when moist, oblong-lingulate to broadly lingulate, slightly asymmetric, 0.8–1.0 mm × ca. 0.4 mm, narrowed at the base, obtusely acute or apiculate at the apex; margins irregularly serrulate above, entire below, often incurved on the proximal side; costae single, strong, nearly percurrent; upper leaf cells polygonal to irregularly oval, 4–8 µm × 2–4 µm, thick-walled; median and basal cells somewhat elongate, thick-walled, often bordered intramarginally by 2–3 rows of narrowly rectangular cells along leaf margins except at the leaf apex. Sporophytes not seen.