This is a list of complexes/sections of hoyas, for those who wish to: A) group their plants according to section to attempt natural pollination, or, B) group their plants according to section for easier access for hand-pollination. It is not a complete list, and some of the sections are proposed.

As an example of what I will be talking about, let me introduce you to cute little hoya odetteae's FULL classification:

Family: Apocynaceae

Sub-family: Asclepoidoideae

Tribe: Marsdenieae

Genus: Hoya

SECTION (what we will be dealing with today): Acanthostemma

Species: Hoya odetteae

Here are the sections (and proposed sections), and species that belong in each section.

HOYA: carnosa, pubicalyx, sp. Kunming Kina, fungii, dasyantha, salweenica, obovata, crassifolia, serpens, compacta, monetteae (can be crossed with those in the longifolia section, eg. Hoya cv. sheperdell)

LONGIFOLIA: longifolia, sheperdii, siamica, stoneana

OTOSTEMMA: lacunosa, khroniana, obscura, colaura, sipitangensis, rosarioae, pusilla, endauensis, nabawanesis, walliniana

ACANTHOSTEMMA: rumphii, DS-70 (tsangii), DS-128, sigillatis, burtoniae, halophilia, memoria, brevialata, inconspicua, incurvula, myrmecopa, pallilimba, odetteae, kentiana, wayetii, panchoi, loherii, picta, litoralis, heuschkeliana, parviflora, parvifolia, bilobata, davidcummingi, gigantengensis

PELTOSTEMMA: imbricata, caudata, flagellata, maxima, sp. Phu Wua, sp. Khao Soi Dao

POTTSII: pottsii, polystachya, clandestina, macrophylla, tjadsmalangensis, glabra, merrillii, deykeae, finlaysonii, clemensiorum, fuscomarginata, cardiophylla, latifolia, aldrichii, acuta, bordenii, amoena, benguetensis, subquintuplnervus, bhutanica, arnottiana, verticilliata, camphorfolia, meredithii, vitellina, vitellinoides, cinnamomifolia, pachyclada, aff. parasitica, chunii, samoensis, erythrina, incrassata, ovalifolia, rigida, tomatensis, dolichospartae, neo-ebudica, pentaphlebia, fitchii, neocaledonica, hellwigiana, purpureofusca, cominsii, nicholsoniae, limoniaca, citrina, juanngoiana, forbesii

CUMINGIANA: cumingiana, densifolia, golamcoana

LANCEOLATA: lanceolata, H. l. ssp. bella (aka. Hoya bella), engleriana, linerais, chinghungensis, dickasoniana

BLASHERNAEZII: blashernaezii, valmayoriana, siariae (possibly ilagiorum, as well)

AMBLYOSTEMMA: kerrii, treubiana, meliflua, excavata, diversifolia

ALBIFLORA: acuminata, albiflora, sp. AH-0240, magnifica, thailandica, sp. HSI-BS-1, sp. Tanna Island, subglabra, leucorhoda, gravolens, australis, schneei, calycina, (possibly naumanii and subcalva)

PHYTOSTEMMA: coriacea, cf.coriacea, fraterna, halcoensis, buottii

PLOCOSTEMMA: lasiantha, praetorii, cf. praetorii

OREOSTEMMA: oreostemma, darwinii, mitrata, cagayensis, padangensis, greenii

PROPOSED:

PACHYSTELMA: mindorensis, erythrostemma

LATIRETINACULA: griffithii, imperialis

POLYNEURA: polyneura, pandurata, lobbii, fusca

ANGUSTIALATUS: flavescens, chlorantha, dimorpha, denisii, ischnopus, rubida, globulifera, lamingtoniae, trigonolobus, kenejiana, montana, vitensis, discorhrensis

PATELLA: patella, megalantha, gildingii, venusta, nyhuusiae

MACGILLIVRAYI: macgillivrayi, onychoides, megalaster, archboldiana