Tuesday, August 7, 2018

[Botany • 2018] Thunbergia impatienoides (Acanthaceae) • A New Species from Thailand

Thunbergia impatienoides Suwanph. & S.Vajrodaya

in Suwanphakdee & Vajrodaya, 2018

A new species, Thunbergia impatienoides, was discovered from Thailand and is here described. Detailed descriptions including pollen and seed morphologies, distribution, ecology and illustration are provided.

Key words: new species, pollen, Thailand, Thunbergia 


Thunbergia impatienoides Suwanph. & S.Vajrodaya, sp. nov.  

Etymology: The specific epithet refers to the gross appearance of its flower which is quite similar to a common ornamental balsam, Impatiens walleriana Hook.f. (Balsaminaceae).

Fig. 1 Thunbergia impatienoides Suwanph. & S.Vajrodaya.
 a–b. Flower bud; c. flower; d. corolla tube with glandular hairs; e. stamens; f. glandular hairs on filament base; g. anther; h. calyx and ovary; i. style and stigma; j. stigma; k. fruit; l. fruit close-up (C. Suwanphakdee 523 (BK, BKF, K, KKU, L, QBG)). — Photos: C. Suwanphakdee.

Distribution: Endemic to Thailand (border of northern and western Thailand in Tak province and in western Thailand in Kanchanaburi and Ratchaburi provinces). 

Habitat & Ecology: In shaded area in dipterocarp and mixed deciduous forests.


Chalermpol Suwanphakdee and Srunya Vajrodaya. 2018. Thunbergia impatienoides (Acanthaceae), A New Species from Thailand. Blumea. 63; 20-25.  DOI: 10.3767/blumea.2018.63.01.03 

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