Wednesday, February 21, 2018

[Botany • 2018] Lecanorchis sarawakensis • A New Mycoheterotrophic Species (Orchidaceae, Vanilloideae) from Sarawak, Borneo

Lecanorchis sarawakensis Suetsugu & Naiki

in  Suetsugu, Ling, Naiki, et al., 2018.

Lecanorchis Blume (1856: 188) comprises about 30 species of mycoheterotrophic orchids (Seidenfaden 1978, Hashimoto 1990, Szlachetko & Mytnik 2000, Govaerts et al. 2017) characterized by having numerous, long, thick, horizontal roots produced from a short rhizome, presence of a calyculus (i.e. a cup-like structure located between the base of the perianth and apex of the ovary) and an elongate column with a pair of small wings on each side of the anther (Seidenfaden 1978, Hashimoto 1990). The genus is distributed across a wide area including China, Korea, India, Indonesia, Japan, Laos, Malaysia, New Guinea, Pacific islands, the Philippines, Taiwan, Thailand and Vietnam (Seidenfaden 1978, Hashimoto 1990, Pearce & Cribb 1999, Szlachetko & Mytnik 2000, Averyanov 2011, 2013).

Lecanorchis sarawakensis in the type locality.
A. Habit. B. Flower, side view. C. Flower, front view.

Lecanorchis sarawakensis Suetsugu & Naiki, sp. nov.

Kenji Suetsugu, Ling Chea Yiing, Akiyo , Shuichiro Tagane, Yayoi Takeuchi, Hironori Toyama and Tetsukazu Yahara. 2018. Lecanorchis sarawakensis (Orchidaceae, Vanilloideae), A New Mycoheterotrophic Species from Sarawak, Borneo. Phytotaxa. 388(1); 135–139. DOI:  10.11646/phytotaxa.338.1.13