Schizostachyum fimbriatum

Sungkaew, Sarawood, Wong, Khoon Meng, Hodkinson, Trevor R., Thammanu, Siriluck, Cheysawat, Somboon & Teerawatananon, Atchara, 2024, Taxonomic revision of the bamboo genus Schizostachyum (Bambusoideae: Melocanninae) in Thailand, with two new species and five new records, lectotypifications and nomenclatural corrections, Phytotaxa 676 (3), pp. 263-286 : 272-273

(6) Schizostachyum fimbriatum (S.Dransfield, Pattanavibool & Sungkaew) K.M.Wong (in Goh et al. 2020: 117). Figs. 3A–B .

≡ Neohouzeaua fimbriata S.Dransfield, Pattanavibool & Sungkaew (in Dransfield et al. 2003: 29–30, fig. 2).

Type: — MYANMAR, Mergui , Yangwa Khlong, 1 March 1927, Parker 2733 (holotype: K [K000912113!]; isotype: K [K000912112!]) .

Distribution and ecology: —This species is endemic to southern Thailand and adjacent area in Myanmar. It grows on slopes, gaps or edges of secondary growth or evergreen forest.

Additional specimens examined: — THAILAND: Peninsular. Ranong, Between Kapong and Ranong, 24 February 2001, S. Sungkaew & R. Pattanavibool 12 ( BKF134545 ) ; Phang Nga, Kapong , 23 October 2022, S. Sungkaew & A. Teerawatananon 1739 ( Thailand Natural History Museum) . MYANMAR: Mergui , 17 February 1928, R.N. Parker 7659 (K003901367) ; the same locality, 1 March 1927, R.N. Parker 2736 (K003901369) ; the same locality, 19 March 1925, C.W. Scott 951 (K003901370) ; Tavoy , 6 January 1919, Rogers 322T (K003901372, K003901373) .

Conservation status: — Schizostachyum fimbriatum has a small EOO of less than 5,000 km 2 (3,151.3 km 2) which places it in the Endangered (EN) conservation category and a small AOO of less than 500 km 2 (60.0 km 2) which also leads to the EN category. In addition, there are less than five locations found so far and this may lead to a very high risk of extinction in the wild. According to IUCN (2023), S. fimbriatum therefore fully fits in the Endangered [EN B1, B2a] category.

Vernacular name: —ไผ่โนราห์ (Phai Nora).

Notes: —Field observations indicated that the swollen base of the culm leaf sheath provides an empty hollow space exploited by ants.

Figures

FIGURE 3. (A–B) Schizostachyum fimbriatum (S.Dransf., Pattan. & Sungkaew) K.M.Wong. (A) Part of leafy branch; (B) Young culm with culm leaf attached. (C–D) S. kerrianum (S.Dransf., Pattan. & Sungkaew) K.M.Wong. (C) Part of leafy branch; (D) Young culm with culm leaf attached. (E–I) S. dullooa (Gamble) R.B.Majumdar. (E) Young culm shoot; (F & G) Different aspects of culm leaves; (H) Part of leafy branch; (I) Flowering branch. (J–M) S. helferi (Munro) R.B.Majumdar. (J) Young culm shoot; (K) Young culm with culm leaf attached; (L) Part of leafy branch; (M) Flowering branch. (N–Q) S. strictum (R.Parker) H.B.Naithani & Bennet. (N) Young culm shoot; (O) Culm leaf; (P) Part of leafy branch; (Q) Pseudospikelet cluster on flowering branch. (Photographed by A. Teerawatananon & S. Sermsinchaisakul).