Taxonomic notes on the genus Najas (Hydrocharitaceae) in Thailand: addition of N. major and exclusion of N. minor

Abstract

The genus Najas (Hydrocharitaceae) was treated for the Flora of Thailand in 2001 with four species recorded. Through field and herbarium observations, it is proposed to exclude one of these four species, N. minor. A further species, N. marina, is reported for the first time. An updated key to the species is provided.

Taxonomy, Autecology And Distribution Of Najas Marina L. (Najadaceae) In Bangladesh

“…Najas marina has cosmopolitan in distribution, (Sculthorpe, 1967;Les et al, 2003). In tropical Asia, N. marina is widely distributed in China (Wang et al, 2010), India (Cook, 1996), Indonesia (de Wilde, 1962), Pakistan (Cook, 1996), Sri Lanka (Cook, 1996), Taiwan (Yang, 2000) and Thailand (Ito, 2016). Spiny Naiad has a world-wide distribution but a scattered one in North America, considered a rare species in Minnesota and introduced in Wisconsin, even potentially invasive in some states.…”