Hypolepis punctata (Thunb.) Mett. ex Kuhn

Family

Dennstaedtiaceae

Nomenclature

Hypolepis punctata (Thunb.) Mett. ex Kuhn, Fil. Afr.: 120. 1868; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 101, f. 11.1 & 11.2. 1939; Holttum, Rev. Fl. Malaya ed. 1, 2: 318. 1955 [‘1954’]; Ching, Fl. Reipubl. Popularis Sin. 2: 248. 1959; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 73. 1967; Tagawa & K.Iwats., Fl. Thailand 3: 124, f. 9.1–9.3. 1979; Boonkerd & Pollawatn, Pterid. Thailand: 39, 86. 2000. – Polypodium punctatum Thunb., Fl. Jap.: 337. 1784.

Description

Rhizome long creeping, blackish, densely hairy at apex, glabrous on the older part, 3–4 mm diam. Stipes stramineous with dark brown base, puberulous, 35–50 cm long; laminae oblong, acute at apex, widest at base, tripinnate-quadripinnatifid, 40–70 cm long, up to 40 cm wide; rachis like the upper part of stipes, stramineous, grooved on upper surface, hairy, the hairs multicellular, coarse, the bases remaining as minute prickles; lower lateral pinnae subopposite, oblong-subtriangular, acute at apex, 30 cm long, up to 20 cm wide, upper pinnae gradually reducing in size; larger pinnules oblong-subtriangular, acuminate at apex, stalked and subtruncate at base, up to 10 cm long, 3 cm wide; costules grooved, hairy throughout; secondary pinnules oblong, round at apex, truncate and sessile at base, up to 2 cm long, 0.5 cm wide, lobed to 2/3 way towards costules; ultimate lobes round, oblique, dentate at margin, veins pinnate, hairy but indistinct on both surfaces, papyraceous, green above. Sori terminal on veinlets, near the margin of lobes, exindusiate but with slight reflexing of small flap in sinus of lamina margin that may offer some protection.

Distribution in Thailand

NORTHERN: Chiang Mai; NORTH-EASTERN: Phetchabun, Loei; SOUTH-WESTERN: Phetchaburi.

Distribution in Cambodia

Kampot

Wider Distribution

Tropics of the Old World generally, northwards to Japan and Korea and southwards to New Zealand.

Ecology

On marshy ground or on wet sandy slopes in open areas or in light shade in lower montane forest at 1000–1400 m alt.; usually invading recent clearings.

Proposed IUCN Conservation Assessment

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

Voucher specimens - Thailand

Middleton et al. 5172, Loei, Phu Luang Wildlife Sanctuary (E).

Habit

Habit

Rhizome

Rhizome

Fronds

Fronds

Rachis with frond bases

Rachis with frond bases

Upper surface of lamina

Upper surface of lamina

Lower surface of lamina

Lower surface of lamina

Lower surface of lamina with sori

Lower surface of lamina with sori

Pinnules with sori

Pinnules with sori

Young sori

Young sori

Site hosted by the Royal Botanic Garden Edinburgh. Content managed by Stuart Lindsay, Gardens by the Bay, Singapore and David Middleton, Singapore Botanic Gardens. Last updated 16 November 2016.