Dendrobium crispum Dalzell

Ormerod, Paul, Kurzweil, Hubert & Watthana, Santi, 2021, Annotated List of Orchidaceae for Myanmar, Phytotaxa 481 (1), pp. 1-262 : 96-97

Dendrobium crispum Dalzell , Hooker’s J. Bot. Kew Gard. Misc. 4: 111, 1852

Replaced synonym: Dendrobium humile Wight, Icon. Pl. Ind. Orient. 5 (1): 5, t. 1643, 1851, nom. illeg. [non (Sm.) Sm. 1808]. Heterotypic synonyms: Dendrobium pygmaeum Lindl. , Gen . Sp. Orchid. Pl.: 85, 1830, nom. illeg. [non Sm. 1808]. Callista pygmaea

(Lindl.) Kuntze, Revis. Gen . Pl. 2: 655, 1891. Type:— MYANMAR. Bago Region: Pyay District, Wallich , Numer. List: no. 1999

(holotype: K-LINDL). Dendrobium wallichii A.D.Hawkes & A.H.Heller , Lloydia 20: 125, 1957.

Dendrobium peguanum Lindl., J. Proc. Linn. Soc., Bot. 3: 19, 1858. Types:— MYANMAR. Southern Bago Region: 5 Jan 1854, McClelland s.n. (syntype: K-LINDL); ‘BORNEO’ (probably Myanmar). Lobb s.n. (syntype: K-LINDL).

Dendrobium microbulbon auctt. plur. non A.Rich.

Specimens examined:—? MYANMAR. Type. CHIN . Falam District: 1830 m, comm. 9 Oct 1923, Daun 14 ( K) . MANDALAY or BAGO. ‘ Pegu Yoma’: Kurz 339 ( CAL) ; same loc., 28 Dec 1870, Kurz 3262 ( CAL) . SHAN. Taunggyi District: 590 m, 3 Mar 2014, Saw Lwin SL 59 ( RAF, RAF [s]) ; same loc., 15 Dec 2014, Fujikawa et al. 101847 ( MBK) . KAYIN. Thaungyin Valley, Beddome 8183 ( BM), det. P. Prommanut [as Dendrobium peguanum ] . BAGO. Pyay District: type ; Bago District: type. TENASSERIM. Parish 339 (not located), fide Parish (1883: 192; as D. pygmaeum ). MON . Thaton District: Swinhoe 82 ( K) ; Mawlamyine District: Parish 91 ( K). WITHOUT LOCALITY. Gamble 3554 ( CAL). Reported from Tanintharyi Region by Kress et al. (2003: 75; as D. peguanum ), but we have not seen material from this area.

Distribution:— India, the Himalayas, Myanmar and Thailand.

Notes:— Dendrobium crispum is conspecific with D. pygmaeum , D. humile and D. peguanum . Unfortunately, it must replace the commonly used D. peguanum . When proposed, D. crispum had D. humile in synonymy. However, the description of D. crispum applies to another taxon (a species later described as D. turbinatum Ormerod & C.S.Kumar ), thereby confusing many later authors. For the complicated taxonomic history of this species see Ormerod & Sathish Kumar (2018: 282).