Volume 3 > Part 4 > Year 1989 > Page 603–604 > Salviniaceae > Salvinia

1. Salvinia natans (L.) All.wfo-0001117304

Fl. Pedem. 2: 289. 1785; Tardieu & C.Chr. in Fl. Indo-Chine 7(2): 542. f. 64. 7. 1941–51; Tagawa & K.Iwats., Acta Phytotax. Geobot. 23: 50. 1968.— Marsilea natans L., Sp. Pl. 2: 1099. 1753. Fig. 60. 4–8.

Accepted Name : This is currently accepted.

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.

Thailand : SOUTH-WESTERN: Ratchaburi (Chom Bueng).

Distribution : Central Europe (type from Italy), N India, China, Japan, N Vietnam, Java.

Ecology : Floating in water pool in open places.

Vernacular : Khrai (ไคร้)(Southwestern); nae bai makham (แหนใบมะขาม)(Central).

Notes: This species is collected only once in Thailand, but expected to be more commonly in Northern. According to the artificial condition for the irrigation system, distribution of the water plants is always changeable.

E-version notes : For more details see Ferns of Thailand, Laos and Cambodia.