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International Hoya Association
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Hoya Species

 

   Hoya flowers are just as varied as the leaves, despite the fact that all are shaped like five pointed stars. They grow in umbels, usually with many flowers per umbel. Individual flowers range in size from as small as four to five millimetres in diameter (Hoya bilobata Schltr.) to well over three inches in diameter (Hoya imperialis Lindl. and H. macgillivrayi F. M. Bailey). The number of flowers per umbel varies from one (H. pauciflora Wight.) to 55 or even more. Hoya coriacea Blume has been known to have as many as 70, each measuring nearly 2 centimetres in diameter. The single flowered Hoya pauciflora Wight makes up for its paucity by its flower size of nearly an inch and a half in diameter.

   Hoya flowers vary in textures as well as size, some being glabrous and shiny and some being quite hairy. They also vary in color. They come in the purest white, varying shades of pink from almost white to rubber-doll or bubble-gum pink, yellowish-pink, yellow, green, purple, brownish-red and brown. There are some that are so dark that they are often referred to as black. Until recently it was thought that a true red hoya was not ever likely to appear but recent discoveries make that seem possible. One of the two clones of Hoya mindorensis Schltr., from the Philippines, which are currently in circulation, comes very close to being a true red. Blue still does not appear to be represented in the Hoya genus.

  • Hoya acicularis
  • Hoya acuminata
  • Hoya acuta
  • Hoya aeschynanthoides
  • Hoya affinis
  • Hoya africana
  • Hoya alagensis
  • Hoya alata
  • Hoya alba
  • Hoya albens
  • Hoya albiflora
  • Hoya aldrichii
  • Hoya alexicaca
  • Hoya amboinensis
  • Hoya ambon
  • Hoya amoena
  • Hoya andalensis
  • Hoya angustifolia (Philippines)
  • Hoya angustisepala
  • Hoya annacajanoae (Philippines)
  • Hoya anulata
  • Hoya apiculata
  • Hoya apoda
  • Hoya archboldiana
  • Hoya ariadna
  • Hoya arnottiana
  • Hoya attenuata
  • Hoya augustifolia
  • Hoya aurantiaca (Philippines)
  • Hoya australis - Australian Waxflower
  • Hoya australis ssp. australis
  • Hoya australis ssp. keysii
  • Hoya australis ssp. naumanii
  • Hoya australis ssp. oramicola
  • Hoya australis ssp. rupicola
  • Hoya australis ssp. sana
  • Hoya australis ssp. tenuipes
  • Hoya bandensis
  • Hoya bella - Beautiful Hoya
  • Hoya benguetensis (Philippines)
  • Hoya benitotanii (Philippines)
  • Hoya benvergarai (Philippines)
  • Hoya betchei
  • Hoya bhutanica
  • Hoya bicknellii
  • Hoya bilobata (Philippines)
  • Hoya blashernazii (Philippines)
  • Hoya bordenii (Philippines)
  • Hoya brevialata
  • Hoya buotii (Philippines)
  • Hoya burtoniae (Philippines)
  • Hoya cagayanensis (Philippines)
  • Hoya callistophylla
  • Hoya calycina
  • Hoya calycina ssp. calycina
  • Hoya campanulata
  • Hoya camphorifolia (Philippines)
  • Hoya cardiophylla
  • Hoya carnosa - Porcelain Flower, Waxplant (China, Souheast Asia, Malesia)
  • Hoya caudata
  • Hoya cembra
  • Hoya chlorantha
  • Hoya chuniana
  • Hoya chunii
  • Hoya ciliata - Black Hoya (Philippines)
  • Hoya cinnamomifolia
  • Hoya citrina
  • Hoya clandestina
  • Hoya clemensii
  • Hoya clemensiorum
  • Hoya collina
  • Hoya cominsii
  • Hoya compacta
  • Hoya conchoi
  • Hoya coriacea (Philippines)
  • Hoya coronaria
  • Hoya crassicaulis (Philippines)
  • Hoya crassipes
  • Hoya cumingiana (Philippines)
  • Hoya curtisii (Philippines, Thailand)
  • Hoya cystiantha
  • Hoya dasyantha
  • Hoya darwinii (Philippines)
  • Hoya davidcummingii (Philippines)
  • Hoya dennisii
  • Hoya densifolia (Philippines)
  • Hoya deykei
  • Hoya dickasoniana
  • Hoya dimorpha
  • Hoya diptera
  • Hoya dischorensis
  • Hoya diversifolia (Philippines)
  • Hoya dolicosparte
  • Hoya edenii
  • Hoya eitapensis
  • Hoya elliptica
  • Hoya endauensis
  • Hoya engleriana
  • Hoya erythrina
  • Hoya erythrostemma (Philippines)
  • Hoya eitapensis
  • Hoya excavata
  • Hoya filiformis
  • Hoya finlaysonii
  • Hoya fitchii (Philippines)
  • Hoya flagelleta
  • Hoya flavescens
  • Hoya flavida
  • Hoya fraterna
  • Hoya fungi
  • Hoya fusca
  • Hoya fuscomarginata
  • Hoya gigantangensis (Philippines)
  • Hoya gigas
  • Hoya gildingii
  • Hoya glabra
  • Hoya globulosa
  • Hoya golamcoiana (Philippines)
  • Hoya gonoloboides
  • Hoya gracilis (Philippines)
  • Hoya graveolens
  • Hoya greenii (Philippines)
  • Hoya grifithii
  • Hoya guppyi
  • Hoya halophila
  • Hoya hasselti
  • Hoya heuschkeliana (Philippines)
  • hHoya heuschkeliana ssp. caganoae (Philippines)
  • Hoya hellwigiana
  • Hoya hypolasia
  • Hoya imbricata (syn. Hoya pseudomaxima ) (Philippines)
  • Hoya imperialis - Honey-plant (Philippines, Borneo)
  • Hoya imperialis ssp. rauchii
  • Hoya inconspicua
  • Hoya incrassata (Philippines)
  • Hoya incurvula
  • Hoya ischnopus
  • Hoya javanica
  • Hoya juanngoiana (Philippines)
  • Hoya kanyakumariana
  • Hoya kastbergii
  • Hoya kenejiana
  • Hoya kentiana (Philippines)
  • Hoya kerrii - Valentine Hoya (Philippines, Thailand)
  • Hoya kloppenburgii (Philippines)
  • Hoya krohniana (Philippines)
  • Hoya kuhlii
  • Hoya lacunosa
  • Hoya lacunosa ssp. lacunosa
  • Hoya lacunosa ssp. pallidiflora
  • Hoya lambii
  • Hoya lamingtoniae
  • Hoya landgrantensis (Philippines)
  • Hoya lasiantha
  • Hoya latifolia
  • Hoya lauterbachii
  • Hoya lazaroi (Philippines)
  • Hoya leytensis (Philippines)
  • Hoya limoniaca
  • Hoya linavergariae
  • Hoya linearis
  • Hoya litoralis
  • Hoya lobbii
  • Hoya loheri (Philippines)
  • Hoya longifolia
  • Hoya lucardenasiana (Philippines)
  • Hoya lucyae (Philippines)
  • Hoya macgillivrayi
  • Hoya macgregorii
  • Hoya macrophylla
  • Hoya madulidii (Philippines)
  • Hoya magnifica
  • Hoya megalaster
  • Hoya meliflua (Philippines)
  • Hoya meliflua ssp. fraterna (Philippines)
  • Hoya meliflua ssp. meliflua (Philippines)
  • Hoya membranifolia
  • Hoya memoria
  • Hoya meredithii
  • Hoya merrillii (Philippines)
  • Hoya micrantha
  • Hoya microphylla
  • Hoya microstemma
  • Hoya minahassae
  • Hoya mindorensis (Philippines)
  • Hoya mindorensis ssp. superba (Philippines)
  • Hoya mindorensis ssp. erythrostemma (Philippines)
  • Hoya minibelle
  • Hoya mitrata (Philippines)
  • Hoya monetteae (Philippines)
  • Hoya montana
  • Hoya motoskei - Spotted Waxplant
  • Hoya multiflora - Shooting Star Hoya (Malesia)
  • Hoya myrmecopa
  • Hoya naumanii
  • Hoya nabawanensis
  • Hoya neo-caledonica
  • Hoya neo-ebudica
  • Hoya nicholsoniae
  • Hoya nummularioides
  • Hoya nyhuusiae
  • Hoya oblongata
  • Hoya obovata
  • Hoya obscura (Philippines)
  • Hoya obtusifolia
  • Hoya obtusifolioides
  • Hoya odetteae (Philippines)
  • Hoya odorata (Philippines)
  • Hoya onychoides
  • Hoya oreogena
  • Hoya ovalifolia
  • Hoya pachyclada (Philippines)
  • Hoya padangensis
  • Hoya palawanica (Philippines)
  • Hoya pallilimba
  • Hoya panayensis (Philippines)
  • Hoya pandurata
  • Hoya parasitica
  • Hoya parviflora
  • Hoya patella
  • Hoya pauciflora
  • Hoya paxtoni
  • Hoya paziae (Philippines)
  • Hoya pentaphlebia (Philippines)
  • Hoya picta
  • Hoya pimenteliana (Philippines)
  • Hoya platycaulis (Philippines)
  • Hoya plicata
  • Hoya polystachya
  • Hoya polyneura - Fishtail Hoya
  • Hoya pottsii
  • Hoya praetorii
  • Hoya pseudo-littoralis
  • Hoya pubera
  • Hoya pubicalyx (Philippines)
  • Hoya pulchella
  • Hoya purpurea
  • Hoya purpureo-fusca
  • Hoya pusilla
  • Hoya querinoensis
  • Hoya ramosi
  • Hoya retusa
  • Hoya revoluta
  • Hoya ridleyi
  • Hoya rigida
  • Hoya rotundifolia
  • Hoya ruscifolia (syn. Dischidia ruscifolia)
  • Hoya salweenica
  • Hoya samoensis
  • Hoya schneei
  • Hoya scortechinii
  • Hoya serpens
  • Hoya shephardell
  • Hoya shepherdii - String Bean Hoya
  • Hoya shortechinii
  • Hoya siamica
  • Hoya siariae (Philippines)
  • Hoya sigillatis
  • Hoya sipitangensis
  • Hoya solaniflora
  • Hoya soligamiana (Philippines)
  • Hoya spartioides
  • Hoya stoneiana
  • Hoya subcalva
  • Hoya subglabra
  • Hoya subquintuplinervis
  • Hoya surigaoensis (Philippines)
  • Hoya sussuela
  • Hoya telosmoides
  • Hoya teretifolia
  • Hoya thailandica
  • Hoya thomsonii
  • Hoya tomataensis
  • Hoya tsangii (Philippines)
  • Hoya uncinata
  • Hoya vaccinioides
  • Hoya vanuatuensis
  • Hoya verticillata (Philippines)
  • Hoya viracensis
  • Hoya vitchii
  • Hoya vitellina
  • Hoya vitellinoides
  • Hoya vitiensis
  • Hoya wallichii
  • Hoya walliniana
  • Hoya wayetii (Philippines)
  • Hoya waymaniae
  • Hoya weebella
  • Hoya whistleri
  • Hoya wibergiae (Philippines)
  • Hoya wightii
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