Ptisana sambucina (Blume) Murdock

Family

Marattiaceae

Nomenclature

Ptisana sambucina (Blume) Murdock, Taxon 57(3): 747. 2008. – Marattia sambucina Blume, Enum. Pl. Javae.: 256. 1828; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 28, f. 5.3–5.5. 1939; Tagawa & K.Iwats., Acta Phytotax. Geobot. 23: 175. 1969; Tagawa & K.Iwats., Fl. Thailand 3: 42. 1979; Boonkerd & Pollawatn, Pterid. Thailand: 64. 2000.

Description

Rhizome short, erect. stipes fleshy, swollen at base. Laminae oblong, slightly narrowing towards lower part, bipinnate, about 40 cm long, 20 cm wide; upper part of rachis and costae winged; pinnae oblanceolate, up to 13 cm long, 3.5 cm wide, shortly stalked; pinnules larger in posterior ones, elliptic, acute to long acuminate at apex, round to cuneate.at base, sessile, usually 1.5 cm long, 0.5 cm broad, but in largest ones about 3 cm long, 1 cm wide, the terminal pinnules usually much longer, margin distinctly serrate; texture subcoriaceous; veins simple, 7–12(–20) in pairs, all free. Synangia oblong, one for each veinlet, at middle portion between costules and margin of pinnules.

Distribution in Thailand

PENINSULAR: Nakhon Si Thammarat.

Wider Distribution

Vietnam and Malesia.

Ecology

At 1500 m alt., no other information available.

Proposed IUCN Conservation Assessment

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

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