Thismia angustimitra (Thismiaceae), a new species from Thailand

Abstract

SUMMARYA new species of the genus Thismia (Thismiaceae) from Thailand is described and illustrated.

Thismia nigricoronata, a new species of Burmanniaceae (Thismieae, Dioscoreales) from Vang Vieng, Vientiane Province, Laos, and a key to subgeneric classification

“…Jonker (1938) nevertheless treated Geomitra at genus level and selected G. clavigera as its type. Various authors have since either maintained Geomitra as a separate genus (Govaerts et al 2007) or synonymised it under Thismia (Stone 1980;Merckx et al 2006;Chantanaorrapint & Chantanaorrapint 2009;Hunt et al 2014;Merckx & Smets 2014). Most recently, Merckx & Smets (2014) listed Geomitra as one of six sections within Thismia subg.…”

“…The genus has received a lot of botanical interest lately with the publication of 16 new species from Asia and the Pacific (Thiele & Jordan 2002, Yang et al 2002, Tsukaya & Okada 2005, Larsen & Averyanov 2007, Chantanaorrapint 2008, Chiang & Hsieh 2011, Chantanaorrapint 2012, Tsukaya & Okada 2012, Dančák et al 2013, Li & Bi 2013, Nuraliev et al 2014, Truòng et al 2014, Mar & Saunders 2015, Nuraliev et al 2015, Chantanaorrapint & Sridith 2015, as well as several new records (Chantanaorrapint & Sridith 2007, Chantanaorrapint & Chantanaorrapint 2009, Ho et al 2009) in the last 15 years alone.…”

A new species of Thismia (Thismiaceae) from Brunei Darussalam, Borneo

“…However, some of these presumed rare species may actually be neglected. The recent discoveries of Thismia alba Holttum ex Jonker (1948: 23) and T. clavigera (Beccari) F. Mueller (1891: 235) from Thailand (Chantanaorrapint & Sridith 2007, Chantanaorrapint & Chantanaorrapint 2009) indicate that these inconspicuous ephemeral plants tend to be overlooked or undercollected. Most Thismia species do seem to be extremely rare, usually collected only once.…”

Thismia nigricans Chantanaorr. & Sridith, a new species of Thismiaceae from Southern Thailand

“…Hroneš 2014;Merckx & Smets 2014;Hunt et al 2014;Mar & Saunders 2015) and is distributed mainly in tropical Asia and America with a concentration of species in Southeast Asia (Jonker 1938;Maas et al 1986;Merckx et al 2013 ). In the last decade, several new species of the genus have been described from South-East Asia (Tsukaya & Okada 2005, 2012Larsen & Averyanov 2007;Chantanaorrapint 2008Chantanaorrapint , 2012Dančák et al 2013;Nuraliev et al 2014;Truong et al 2014). This genus is well characterized by being small mycoheterotrophic herbs possessing tuberous or vermiform underground, or corralloid roots.…”

“…Although various regional treatments of Thismia have been published and six species have been reported from Thailand (Larsen 1965(Larsen , 1987Chantanaorrapint & Sridith 2007;Chantanaorrapint 2008Chantanaorrapint , 2012Chantanaorrapint & Chantanaorrapint 2009), more new records of species are expected in unexplored areas, especially in the lower peninsular part of the country. During recent visit of Sri Phangnga National Park in southern Thailand, an undescribed species of Thismia was collected, with a unique combination of characters that did not match any existing described species.…”