阴生毛蕨 yin sheng mao jue

Aspidium latebrosum Kunze ex Mettenius, Abh. Senckenberg. Naturf. Ges. 2: 388. 1858; Sphaerostephanos latebrosus (Kunze ex Mettenius) Holttum.

Plants 50-100 cm tall. Rhizomes erect. Fronds clustered; stipes 5-10 cm, dark stramineous, bases with sparse brown lanceolate scales; laminae 40-90 × 20-30 cm, bases gradually narrowed, apices acuminate; pinnae 30-40 pairs, proximal ca. 10 pairs gradually shortened with lowest one ca. 5 mm, slightly reflexed; middle pinnae lanceolate, 10-18 × 1-2 cm, bases broadly cuneate to truncate, lobed 1/2-2/3 toward costae, apices acuminate; aerophores beneath pinna bases slightly swollen; segments 20-30 pairs on middle pinnae, oblong, 5-8 × 3-4 mm, entire, obtuse at apices; veinlets 6-8 pairs, proximal pair anastomosing, next 0.5-1 pair running to sinus membrane. Laminae papery, reddish brown when dried, adaxially with sparse short acicular hairs along costae and veins, abaxial surface with yellow sessile spherical glands throughout and almost glabrous. Sori orbicular, medial; indusia glabrous, sometimes glandular. Sporangia bearing yellow spherical glands on capsules. Spores light brown, densely echinulate.

Wet places in dense forests; 300-400 m. S Yunnan (Jinping) [Bangladesh, Indonesia, Malaysia, Philippines].

"Cyclosorus glabellus" (Ching ex W. M. Chu & S. G. Lu, Fl. Yunnan. 20: 608. 2006) belongs here but was not validly published because no Latin description or diagnosis, or reference to such, was provided and no type was indicated (Melbourne Code, Art. 39.1 and 40.1).