Thelypteris glanduligera (Kunze) Ching

Family

Thelypteridaceae

Nomenclature

Thelypteris glanduligera (Kunze) Ching, Bull. Fan Mem. Inst. Biol. Bot. 6: 320. 1936; K. Iwats., Mem. Coll. Sci. Univ. Kyoto B, 31: 167. 1965. – Aspidium glanduligerum Kunze, Analecta Pterid.: 44. 1837. – Lastrea gracilescens var. glanduligera (Kunze) Bedd., Suppl. Ferns Brit. Ind.: 51. 1892. – Dryopteris glanduligera (Kunze) Christ, J. de Bot. 21: 231. 1908. – Parathelypteris glanduligera (Kunze) Ching, Acta Phytotax. Sinica 8: 303. 1963; Holttum, Kalikasan 5: 113. 1976; Holttum, Fl. Males., Ser. II, Pterid. 1: 373. 1982 [‘1981’]. – Type: C.W.Petersen, near Canton ("Herb. Lehmann et propria"; not found among Kunze specimens at B).

Dryopteris repentula Christ, Notul. Syst. 1: 29. 1909.

Description

Description from Holttum, Fl. Males., Ser. II, Pterid. 1: 373. 1982 [‘1981’].
Rhizome to 3 mm diameter. Stipes to 30 cm long, slender, with many capitate and sometimes acicular hairs. Laminae 20–30 cm long; pinnae 15–20 pairs, well spaced; basal pinnae not reduced, distinctly narrowed towards their bases, basal acroscopic lobe often ± elongate and sometimes dentate. Largest pinnae 6–8.5 cm long, 1.3–1.5 cm wide, acuminate, lobed to 0.5 mm from costa; lobes entire, subacute, falcate; costules 2–3 mm apart; veins to 8 pairs, usually simple; lower surface of rachis and costae densely hairy, hairs erect, of varied length to 1 mm; hairs on costules and veins more sparse, also some small scales with swollen red terminal cell; large orange-red glands present on and between veins; upper surface lacking hairs and glands between veins. Sori near apices of veins, rather small, distal ones sometimes asymmetric; indusia small, bearing glands (often many) and short hairs.

Distribution in Thailand

NORTHERN: Chiang Mai.

Distribution in Laos

Xieng Khouang.

Wider Distribution

Nepal eastwards to S China, Philippines.

Proposed IUCN Conservation Assessment

Least Concern (LC). This species is widespread and not under any known threat.

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