Ferns of Thailand, Laos and Cambodia

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Family

Salviniaceae

Nomenclature

Salvinia natans (L.) All., Fl. Pedem. 2: 289. 1785; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 542, f. 64. 7. 1941; Tagawa & K.Iwats., Acta Phytotax. Geobot. 23: 50. 1968; Tagawa & K.Iwats., Fl. Thailand 3: 603, f. 60.4–8. 1989; Boonkerd & Pollawatn, Pterid. Thailand: 97, 116. 2000. – Marsilea natans L., Sp. Pl. 2: 1099. 1753.

Description

Stems branching irregularly, hairy. Floating leaves herbaceous, elliptic or narrowly so, 1–2 by 0.3– 0.6 cm, shortly stalked; upper surface covered with dense short projections bearing several prickle-like hairs at apex, lower surface bearing downy hairs. Sori crowded at base of submerged leaves, spherical , covered with soft hairs.

Distribution in Thailand

SOUTH-WESTERN: Ratchaburi.

Wider Distribution

C. Europe, N India, China, Japan, N Vietnam and Java.

Ecology

Floating in water in open places.

Proposed IUCN Conservation Assessment

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

	Ferns of Thailand, Laos and Cambodia
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Salvinia natans (L.) All. Warning: count(): Parameter must be an array or an object that implements Countable in C:\Data\serverroots\htdocs\ThaiFerns\factsheets\functions.php on line 17 Family Salviniaceae Nomenclature Salvinia natans (L.) All., Fl. Pedem. 2: 289. 1785; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 542, f. 64. 7. 1941; Tagawa & K.Iwats., Acta Phytotax. Geobot. 23: 50. 1968; Tagawa & K.Iwats., Fl. Thailand 3: 603, f. 60.4–8. 1989; Boonkerd & Pollawatn, Pterid. Thailand: 97, 116. 2000. – Marsilea natans L., Sp. Pl. 2: 1099. 1753. Description Stems branching irregularly, hairy. Floating leaves herbaceous, elliptic or narrowly so, 1–2 by 0.3– 0.6 cm, shortly stalked; upper surface covered with dense short projections bearing several prickle-like hairs at apex, lower surface bearing downy hairs. Sori crowded at base of submerged leaves, spherical , covered with soft hairs. Distribution in Thailand SOUTH-WESTERN: Ratchaburi. Wider Distribution C. Europe, N India, China, Japan, N Vietnam and Java. Ecology Floating in water in open places. Proposed IUCN Conservation Assessment Least Concern (LC). This species is widespread outside of Thailand and not under any known threat. Warning: count(): Parameter must be an array or an object that implements Countable in C:\Data\serverroots\htdocs\ThaiFerns\factsheets\functions.php on line 17
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