A new threatened endemic species from central and northeastern Thailand, Dracaena jayniana (Asparagaceae: tribe Nolinoideae)

What We Know and What We Do Not Know about Dragon Trees?

“…The distribution of most species is scattered, comprising a small population with unbalanced age structure, and young trees often bring absent [8,9,11,[17][18][19][20][21].…”

A new species from Thailand and Burma, Dracaena kaweesakii Wilkin & Suksathan (Asparagaceae subfamily Nolinoideae)

“…In addition to the three accepted names in Govaerts et al (2011) and Dracaena jayniana Wilkin & Suksathan that was described in Wilkin et al (2012), a further element of the “dragon tree” group of species usually known as Chan nuu or Chan pa krai in Thai appeared distinct in its macromorphology from all other related taxa. Thus it was investigated more closely to discover if it represented an undescribed taxon.…”

“…The taxonomy of the “dragon tree” group of Dracaena L. species in mainland South-East Asia was summarised in Wilkin et al (2012). The species possess an undifferentiated leaf sheath, lack a leaf blade central costa and have free tepals and free thickened filaments.…”

Erythrina calcicola sp. nov. (Fabaceae) from Thailand

“…It is possible that Erythrina calcicola may be endemic to this narrow area, which is similar to a number of other newly described species, e.g., Cycas petrae A.Lindstr. & K.D.Hill (Lindstrom & Hill, 2003), Spatholirion calcicola K.Larsen & S.S.Larsen (Larsen & Larsen, 2003), Impatiens ruthiae Suksathan & Triboun (Suksathan & Triboun, 2009), Dracaena jayniana Wilkin & Suksathan (Wilkin et al, 2012), Arisaema nonghinense Klinrat. & Yannawat (Klinratana et al, 2014), Toona calcicola Rueangr., Takane & Suddee (Rueangruea et al, 2015), Dischidia kerrii Kidyoo & Suddee (Kidyoo & Suddee, 2016).…”