Wednesday, December 18, 2013

[Orchidology • 2013] Five Species of Liparis (Orchidaceae) newly recorded for Thailand

During work on a forthcoming new revision of Liparis in Thailand, five new national records were discovered, and  details on the Thai occurrences are reported in this paper.

Three of the newly recorded species are terrestrials that only produce leaves in the rainy season. Thus, (1) L. acutissima Rchb.f. (also known from Cambodia, Laos and Vietnam) is reported from Phu Wua Wildlife Sanctuary, province of Bueng Kan; (2) L. sootenzanensis Fukuy. (also known from Taiwan and Vietnam), is reported from Phu Hin Rong Kla National Park, province of Phitsanulok; and (3) L. stenoglossa C.S.P.Parish & Rchb.f. (previously considered endemic to Myanmar) is reported from Wat Tham Pha Sawan, Nong Hin, province of Loei.

The two remaining species are epiphytes that bear leaves all the year round. Thus, (4) L. elegans Lindl. widespread in Malesia) is reported from Khao Sok National Park in province of Surat Thani and from Khao Chet Yot in province of Trang; and (5) L. vestita Rchb.f. (previously known from India only) is reported from Amphoe Rong Kwang in province of Phrae and from two parts of Khao Yai National Park (situated in the provinces of Nakhon Nayok and Prachin Buri, respectively).

The newly recorded species are illustrated by colour photos, and morphological descriptions based on Thai material are provided together with lists of synonyms and supplementary references to the literature. The name L. elegans Lindl. is lectotypified.

KEY WORDS: Liparis acutissima, L. elegans, L. sootenzanensis, L. stenoglossa, L. vestita, distribution, occurrence, taxonomic revision.

Liparis acutissima Rchb.f.
Distribution.— Cambodia, Laos, Vietnam.
Thailand.— NORTH-EASTERN: Bueng Kan
Vernacular.— Ueang klip muan bai ya (เอื้องกลีบม้วนใบหญ้า) (here proposed).

Liparis sootenzanensis Fukuy.
Distribution.— Taiwan, Vietnam.
Thailand.— NORTHERN: Phitsanulok
Vernacular.— Klip muan khiao morakot (กลีบม้วนเขียวมรกต) (here proposed).

Liparis stenoglossa C.S.P.Parish & Rchb.f.
Distribution.— Myanmar.
Thailand.— NORTH-EASTERN: Loei 
Vernacular.— Ya pro nok noi (หญ้าเปราะนกน้อย) (here proposed).

Liparis elegans Lindl.
Distribution.— Widespread in Malesia, from Peninsular Malaysia in the west to the Philippines in the north-east and New Guinea in the south-east.
Thailand.— PENINSULAR: Surat Thani, Trang
Vernacular.— Klip muan dok ngam (กลีบม้วนดอกงาม) (here proposed).

Liparis vestita Rchb.f.
Distribution.— India.
Thailand.— NORTHERN: Phrae; CENTRAL: Nakhon Nayok; SOUTH-EASTERN: Prachin Buri
Vernacular.— Ueang khao san dok som (เอื้องข้าวสารดอกส้ม) (here proposed)

Naiyana Tetsana, Henrik Æ. Pedersen, and Kitichate Sridith. 2013. Five Species of Liparis (Orchidaceae) newly recorded for Thailand. THAI FOR. BULL. (BOT.). 41: 48–55.