Schizostachyum kerrianum

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 : 276

(9) Schizostachyum kerrianum (S.Dransfield, Pattanavibool & Sungkaew) K.M.Wong (in Goh et al. 2020: 117). Figs. 3C–D . ≡ Neohouzeaua kerriana S.Dransfield, Pattanavibool & Sungkaew (in Dransfield et al. 2003: 28–30, fig. 1), as ‘Neohouzeoua’. Type: — THAILAND, Chumphon, Langsuan, Khao Nam Sao, alt. 800–1,000 m, 21 February 1927, A.F.G. Kerr 12070 (holotype:

K [K000290792!]; isotypes: BK [BK252316!, K000290789!, K000290790!, K00290791!, K000290793!, K000290794!,

K000290806!).

Distribution and ecology: —Southern Thailand and southern Myanmar. On slopes of secondary growth or forest and scattered along streams in evergreen forest.

Additional specimens examined: — THAILAND: Peninsular. Ranong, Mueang Ranong, 24 February 2001, S. Sungkaew & R. Pattanavibool 13 (BKF134545, K000682113, K000682114, K000682115, K000682116) ; the same locality, 23 April 2010, S. Sungkaew & A. Teerawatananon 1078 ( 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 kerrianum has a relatively small EOO of less than 20,000 km 2 (7,799.6 km 2) which places it in the Vulnerable (VU) conservation category while its small AOO of less than 500 km 2 (56.0 km 2) puts it to the Endangered (EN) category. This bamboo species was collected from a single location; however, other populations were discovered in less than 5 locations in Ranong province. According to IUCN (2023), we consider that the conservation status of S. kerrianum should be in the Endangered [EN B2a] category.

Vernacular name: —ไผ่ ราชวัง (Phai Ratchawang), ไผ่ลาดวัง (Phai Ladwang).

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).