I just stumbled upon this list from http://www.simones-hoyas.de
I thought maybe others might find it useful.
Hoyas from Sabah and Borneo - A tropical rainforest where the temperature stays 80.6 degrees year 'round and there is high humidity.
H. acicularis Green & Kloppenburg 2002
H. of aeschynanthoides bad 1908
H. ariadna Decaisne 1844
H. callistophylla
H. campanulata flower
H. clemensiorum Green 2001 = H. phyllura Schwartz 1931
H. coriacea flower 1826
H. corona ariadnes flower 1863
H. coronaria flower 1825
H. cumingiana Decaisne 1844 (Syn. H. diversifolia)
H. diversifolia flower 1826
H. ellmerii Merrill 1929
H. erythrostemma Kerr 1939
H. fraterna flower 1849
H. gildingii Kloppenburg 2001
H. glabra bad 1908
H. imperialis Lindley 1846
H. kastbergii Kloppenburg 2003
H. kloppenburgii Green 2001
H. lambii Green 2000
H. lasiantha Korthals ex flower 1846
H. meredithii Green 1989
H. mitrata Kerr 1940
H. multiflora flower 1823
H. nyhuusiae Kloppenburg 2003
H. phyllura Schwartz 1931 = H. clemensiorum Green 2001
H. of spartioides
H. sussuela (Roxberg) Merrill 1917
H. of telosmoides Omler 1996
H. vacciniflora Schwartz 1931
H. vitellina flower 1849
H. of vitellinoides Brink f. 1950
H. walliniana Kloppenburg & Nyhuus 2003
H. waymaniae Kloppenburg 1995
Hoya's from Sabah and Borneo
Uh oh....I have a couple of those hoyas and there's no way they're getting 80.6 F (translated to 27C) degree temperatures year round. Thanks for the information.....at least I can make sure they both stay on the heat mat all winter. I knew one liked warmer temps but not the other.
Sandy