Spiranthes australis (R. Brown 1810: 219 ) Lindley (1824: 823)

Suetsugu, Kenji & Hsu, Tian-Chuan, 2023, Taxonomic revision of the genus Spiranthes (Orchidaceae) in Taiwan, Phytotaxa 578 (1), pp. 1-10 : 8

publication ID	https://doi.org/ 10.11646/phytotaxa.578.1.1
DOI	https://doi.org/10.5281/zenodo.7539411
persistent identifier	https://treatment.plazi.org/id/03DE87E2-0232-FFE5-FF4A-F9C614EDF7AE
treatment provided by	Plazi
scientific name	Spiranthes australis (R. Brown 1810: 219 ) Lindley (1824: 823)
status

Treatment

Spiranthes australis (R. Brown 1810: 219) Lindley (1824: 823) View in CoL View at ENA

× Spiranthes sinensis ( Persoon 1807: 511) Ames (1908: 53) View in CoL

Specimens examined:— TAIWAN. Pingtung: Chunri Township, Tahanshan , 25 April 2017, J.Z. Lin 3 (TAIF!)

Morphological descriptions and illustrations: —See Suetsugu et al. (2020: t2, f2B, f3C & f3G).

Taxonomic remarks:— Two closely related species, Spiranthes sinensis and S. australis , have been distinguished based on the presence or absence of hairs in their inflorescence and on the stems and ovaries: the stems and ovaries o f S. australis are generally pubescent, whereas those of S. sinensis are glabrous. Intriguingly, although S. australis has not been documented to occur in Taiwan, Suetsugu et al. (2020) found a population of Spiranthes with slightly pubescent stems and ovaries at Tahanshan, southern Taiwan. Because the sequences from the slightly pubescent plants of Spiranthes show a combination of sequences between those of S. australis and S. sinensis, Suetsugu et al. (2020) concluded that they were hybrids between S. sinensis and S. australis .