Dendrobium indragiriense Schltr., Repert., 2021

Ormerod, Paul, Kurzweil, Hubert & Watthana, Santi, 2021, Annotated List of Orchidaceae for Myanmar, Phytotaxa 481 (1), pp. 1-262 : 107

Dendrobium indragiriense Schltr., Repert. Spec. Nov. Regni Veg. 9: 164, 1911

Homotypic synonym: Grastidium indragiriense (Schltr.) Rauschert, Feddes Repert. 94: 450, 1983.

Specimen examined:— TANINTHARYI. Dawei District: fide Aung et al. (2020: 79). Distribution:— Andaman Islands, southern Myanmar, Thailand and western Malesia.

Dendrobium infundibulum Lindl., J. Proc. Linn. Soc., Bot. 3: 16, 1859. Type :— MYANMAR. Mon State : Mawlamyine District, Lobb s.n. (holotype: K-LINDL)

Homotypic synonym: Callista infundibulum (Lindl.) Kuntze, Revis. Gen . Pl. 2: 655, 1891.

Heterotypic synonyms: Dendrobium moulmeinense Low ex Bateman, Bot. Mag. 90: t. 5446, 1864, nom. prov. Type:— MYANMAR. Mon State : Mawlamyine District , Parish s.n., imp. & cult. Low s.n. (not located) .

Dendrobium jamesianum Rchb. f., Gard. Chron. 1869: 554, 1869. Dendrobium infundibulum Lindl. var. jamesianum (Rchb.f.) H.J. Veitch, Man. Orchid. Pl. 3: 50, 1888. Type:— MYANMAR. Bago Region: Pyay District , Benson s.n., cult. Veitch s.n. (holotype: W-R 32476 ) .

Dendrobium infundibulum Lindl. var. ornatissimum Rchb. f., Gard. Chron., n.s., 19: 656, 1883. Type:—ORIGIN UNKNOWN (? Myanmar). Cult. Wyatt s.n. (holotype: W-R).

Dendrobium cariniferum Rchb. f. var. wattii Hook. f., Bot. Mag. 109: t. 6715, 1883. Dendrobium wattii (Hook.f.) Rchb.f., Gard. Chron., n.s., 4: 725, 1888. Callista wattii (Hook.f.) Kuntze, Revis. Gen . Pl. 2: 655, 1891.

Specimens examined:—? MYANMAR. Type. KACHIN. Bhamo District: Foerstermann s.n. ( W-R 6192 , 8492 , 8493 & 8494); same loc., Micholitz s.n. ( K, W-R 32457 & 32458) . CHIN. Falam District: 1675 m, Jun 1910, Venning 8 ( AMES, K) ; same loc., 2135 m, 2 Apr 1938, Dickason 7357 ( AMES 53467 ) ; same loc., 1370−1980 m, 2 Apr 1938, Dickason 7357 ( AMES 57174 ) ; Mindat District: 1065 m, 13 Apr 1926, Unwin 3002 ( E) ; same loc., 1585 m, 19 Apr 1926, Unwin 3077 ( E, RAF) ; same loc., 2440–2745 m, 10 Apr 1956, Kingdon-Ward 21999 ( BM) ; same loc., 2440−2745 m, May 1956, Maung Gale-2 5556 ( RAF) ; same loc., 1740 m, 26 Apr 2003, Murata et al. 029698 ( MBK) ; same loc., 2220 m, 28 Apr 2003, Murata et al. 029756 ( MBK) ; same loc., 1700−2030 m, 21 May 2004, Tanaka et al. 031016 ( MBK) ; same loc., 2745 m, 19 Nov 2011, Ling Shein Man 087844 ( MBK) ; same loc., 2040 m, 19 May 2012, Fujikawa et al. 089045 ( MBK) ; same loc., 2200 m, 24 May 2012, Fujikawa et al. 089209 ( MBK) . MANDALAY. Pyinoolwin District: 1065 m, Maung Sin s.n. in Maymyo Bot. Gard. 13532 ( K) ; Myingyan District: 1 May 2003, cult. ex Yukawa et al. 029773 ( TNS [s]), fide Tanaka et al. (2015: 76), ident. uncertain [as D. jamesianum ] . SHAN. Unspecified : 915 m, 1887, illegible 544 ( K) ; Taunggyi District: 2315 m, May 1939, Dickason 8712 ( AMES) . BAGO. Pyay District: type. MON. Mawlamyine District: types; same loc., Parish 130 & 132 A ( K) ; same loc., Parkinson 5134 ( K) ; same loc., Lace 6294 ( K). WITHOUT LOCALITY. Without collector s.n. ( AMES) . Reported from Magway Region and Kayah, Kayin and Rakhine states by Kress et al. (2003: 74), but we have not seen material from these areas .

Distribution:— India, Bangladesh, Myanmar, Thailand and Indochina.

Notes:— Seidenfaden (1985: 118) mentioned that E.A. Schelpe considered D. wattii conspecific with D. infundibulum . One of us, PO, has studied material from Myanmar, and based on this we concur. Dendrobium wattii represents the smaller-flowered forms of the species. Most likely, its so-called rarity is due to collectors preferring the larger-flowered forms rather than the smaller-flowered typical variety.