Monday, August 27, 2018

[Botany • 2018] Lectotypification of Thismia arachnites (Thismiaceae), A Mysterious Species Newly Reported for Thailand


Thismia arachnites Ridl.

in Chantanaorrapint, 2018. 

Summary
Thismia arachnites Ridl., previously known only from Perak, Malaysia, is newly reported in tropical lowland forest in south-eastern and peninsular Thailand. A detailed description and photographs are provided. In addition, a lectotype is also designated here.

Key Words: Distribution, mycoheterotrophic, Thai-Malay Peninsula, typification 

Fig. 2. Thismia arachnites Ridl.
A – C plants in natural habitat, A – B from Tarutao Island, Satun province, C from Khao Cha Mao Waterfall, Chantaburi province; D flower (side view); E longitudinal section of flower.
Photos: S. Chantanaorrapint.


Thismia arachnites Ridl. (Ridley 1905: 197). 
Type: illustration of Thismia arachnites, Malaysia, Perak Hills, tea gardens, Feb. 1904,
 drawn by H. N. Ridley (lectotype K!, selected here, Fig. 1).

DISTRIBUTION: Malaysia and Thailand. 
HABITAT AND ECOLOGY: In Thailand, Thismia arachnites was found growing on humus, in lowland evergreen forests; alt. 50 – 250 m.


Thismia arachnites Ridl.


Sahut Chantanaorrapint. 2018. Lectotypification of Thismia arachnites (Thismiaceae), A Mysterious Species Newly Reported for Thailand. Kew Bulletin. DOI: 10.1007/s12225-018-9765-2 


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