Nephrolepis hirsutula (G.Forst.) C.Presl
Nephrolepis hirsutula (G.Forst.) C.Presl, Tent. Pterid.: 79. 1836; Tardieu & C.Chr. in Fl. Indo-Chine 7(2): 290. 1941; Holttum, Rev. Fl. Malaya ed. 1, 2: 382, f. 222. 1955 [‘1954’]; Ching, Fl. Reipubl. Popularis Sin. 2: 317, pl. 28, f. 3 & 4.1959; Tagawa & K.Iwats.,SouthE. Asian Stud. 5: 78. 1967; Tagawa & K.Iwats., Fl. Thailand 3: 177. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 238. 2000; Hovenkamp & Miyamoto, Blumea 50: 304. 2005. – Polypodium hirsutulum G.Forst., Fl. Ins. Austr.: 81. 1786.
Rhizome short, erect, bearing a tuft of fronds, a few wiry roots, and stolons; scales dense, appressed, gradually narrowing from round base to acute apex, bicoloured with dark brown central portion and pale ferrugineous edge, about 3 by 0.7 mm, hairy at margin; runners many, slender, hirsute. Stipes up to 30 cm long, scaly throughout. Laminae up to 50 by 30 cm, gradually narrowing towards both ends; lateral pinnae more than 60 pairs; the middle ones 2–2.5 cm apart, larger, gradually narrowing from base towards acute apex, distinctly auricled at anterior and round to slightly auricled at posterior bases, up to 15 by 2 cm, shallowly crenate at margin; herbaceous or thicker, very minutely scaly or costa, veins and both surfaces of lamina as well. Sori submarginal; indusia reniform, glabrous , up to 1 mm diam.
Distribution in Thailand
NORTHERN: Chiang Mai; NORTH-EASTERN: Nong Khai; SOUTH-WESTERN: Prachuap Khiri Khan; SOUTH-EASTERN: Chanthaburi; PENINSULAR: Chumphon, Ranong, Phangnga, Nakhon Si Thammarat, Krabi, Satun, Yala.
Distribution in Cambodia
Tropical Asia to the Pacific.
On rather dry ground in light shade.
Proposed IUCN Conservation Assessment
Least Concern (LC). This species is widespread and not under any known threat.
Voucher specimens - Thailand
Middleton et al. 4656, Chanthaburi, Namtok Phlio National Park (E).
Stipe bases and crozier
Lower surface of rachis and pinnae
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