Names and types of Bornean Hoya 
57 
Hoya angustifolia J.Traill was possibly based on a live plant and no extant 
specimens have been found. 
Wight indicated the materials for Hoya hookeriana as Wall. Asclep. 28A&B and 
Wall. Asclep. n. 39 (ex parte). Following Noltie (2005), the Wallich Catalogue numbers 
associated with Wall. Asclep. 28A,B are Wall. Cat. 8158A&B, while Noltie (2005) 
suggests excluding Wall. Asclep. n. 39 because it is unnamed in the Wallich Cataloge 
and it does not bear a locality. Wall. Cat. 8153A (K) was incorrectly indicated as the 
lectotype of Hoya hookeriana Wight by Veldkamp et al. (1995). The specimen here 
selected as the lectotype belonged to Wight’s personal working herbarium, is labelled 
‘Herb. R. Wight. Prop’ and ‘28B’ and bears a description and sketch in Wight’s hand. 
Syntypes (Wall. Cat. 8158A) are to be found at E [E00179570], K [K001129100], 
[K000873070] andK-W. 
Veldkamp et al. (1995) cited a Roxburgh (BM) specimen as the holotype of 
Hoya parasitica Wall, ex Wight. This counts as an effective lectotypification under 
ICN Art 9.9 (McNeill et al., 2012). However no Roxburgh specimen identified as Hoya 
parasitica is present in BM. The only original material is therefore the illustration in 
K that is here selected as the lectotype. 
Numerous specimens are cited in the protologue of Hoya ridleyi King & Gamble, 
collected by Curtis and Ridley. Rintz indicates the type of the taxon as ‘Malaysia, 
Ridley (K)’ The only original materials collected by Ridley in K available for Hoya 
ridleyi are three dissections by Gamble mounted on a single card. Rintz (1978) 
cannot therefore be considered a first step lectotypification. Ridley 10358 (SING) is 
instead here selected as lectotype. Other syntypes found are Curtis s.n. [SING 121195, 
SING0121079], Ridley 9476. ([SING0121189], K, dissection by Gamble), Ridley 
5519 ([SING0121191], K, dissection by Gamble). 
Hoya balansae Costantin was described from material collected by Balansa in 
Ha Long Bay in Vietnam. The only Balansa specimen from Ha Long Bay labelled 
Hoya balansae in Costantin’s handwriting has been found in P [P00645997] and is a 
suitable lectotype. 
The only collection for Hoya globiflora Ridl. was indicated as ‘Koh Pennan 
No. 5756.’ Veldkamp et al. (1995) indicated a SING duplicate as the holotype that 
would count as an effective lectotypification under ICN Art 9.9 (McNeill et al., 2012). 
However, the specimen is not extant at SING and it is also not listed in the SING 
card index suggesting it may never have been present. The K duplicate is instead here 
selected as the lectotype for Hoya globiflora. 
Hoya obscurinervia Merr. was based on McClure 9819. The duplicate at A 
[A00076421] is a well-preserved fertile specimen and it is selected as lectotype. 
Hoya vitellina Blume, Mus. Bot. 1(3): 45 (1849) - TYPE: Java, West Java, Blume, 
CLP ., s.n. (lectotype L [L0004346], designated here; possible isolectotypes BO 
[B01869758, B01869758], U [U1102651]). 
Hoya fuscomarginata N.E.Br., Bull. Misc. Inform. Kew 278 (1910). - TYPE: Origin 
unknown, cultivated at Glasnevin Botanic Gardens, Dublin, 13 April 1910, s. coll. (K 
holotype [K000449169]). 
