48 
Card. Bull. Singapore 69(1) 2017 
Centrostemma elegans Blume, Mus. Bot. 1(3): 46 (1849). - Cyrtoceras elegans 
(Blume) Miq., FI. Ned. Ind. 2: 515 (1857). - Hoya elegans (Blume) Boerl., Handl. 
FI. Ned. Ind. 2: 440 (1899), non Kostel. (1834). - TYPE: Borneo, s.d, s.coll, s.n. 
(lectotype L [L2726969], designated here). 
Centrostemma laurifolium Blume, Mus. Bot. 1(3): 46 (1849). - Cyrtoceras laurifolium 
(Blume) Miq., FI. Ned. Ind. 2: 514 (1857). -Hoyajavanica Boerl., Handl. FI. Ned. Ind. 
2: 440 (1899). -TYPE: Indonesia, Java, W Java [Tjunlcankan. In sylvismontanis Javae 
occidentalis], Salalc, August 1825, s.coll., s.n. (lectotype L [L0004337], designated 
here). 
Cyrtoceras uncinatum Teijsm. & Binn., Natuurk. Tijdschr. Ned.-Indie 25: 408 (1863). 
-TYPE: Indonesia, Sumatra, Palembang, ad arbores, s.d., Teijsmann, J.E. (not found). 
Indonesia, Java [prope flumine Tjapaes? Kietpil ?, Salleh], 16 Sep 1820, s.coll., s. n. 
(neotype L [L2727033], designated here). 
Hoya reticulata Costantin in Lecomte, FI. Indo-Chine 4: 138 (1912), non Hoya 
reticulata Moon (1824), nee Hoya reticulata Schltr. (1913), nee Hoya reticulata Merr. 
(1921). - TYPE: Cambodia, Mt. Krewanh, Sep 1870?, Pierre, L., s.n. (lectotype P 
[P00700502], designated here). 
Centrostemma platypetalum Merr., Sunyatsenia 2: 16-17 (1934). - TYPE: China. 
Guangdong. Sup Man Ta Shan, 19 July 1933, Tso, C.L. 23346 (lectotype NY 
[NY00318540], designated here). 
Hoya refracta nom. nud. on numerous sheets in L and P. 
Notes. The publication of Hoya multiflora Blume only consists of a diagnosis ‘caule 
fruticoso scandente; foliis oppositis oblong-lanceolatis utrinque acutis glabris subtus 
pallidioribus; floribus fasciculatis terminal ibus’ without any information that could 
link it to a specimen such as a collector name, a locality or a common name. Numerous 
specimens of Hoya multiflora are present in L with Blume’s autograph labels. Among 
these, only one [L2727033] has a date definitively setting its collection before 
publication of the protologue, ‘16 September 1820’. It is a fertile and well-preserved 
specimen and is therefore suitable lectotype material. 
There are no known extant collections from Blanco, including for Asclepias 
carnosa Blanco, non L.f. (Merrill, 1918). Merrill’s illustrative specimen 852 is 
therefore selected as neotype for Asclepias carnosa Blanco. 
No specimens are listed for Cyrtoceras reflexum Benn. The plate included 
together with the species description (Bennett, 1838 Fig. 21) is therefore selected 
as lectotype. A Horsfield collection from Java [K000894745] that may be original 
material is selected as an epitype. 
Cyrtoceras lindleyanum Decne. was a new name based on a plant misidentified 
by Lindley as Hoya coriacea Blume (Lindley, 1839). Lindley’s treatment was based 
on a plant ‘Sent by Mr Cuming to Messrs. Loddiges, from Manila; it flowered for 
