- Hoyas are evergreen perennial creepers or vines or rarely, shrubs. They often grow epiphytically on trees; some grow terrestrially, or occasionally in rocky areas. They climb by twining, and with the employment of adventitious roots. Larger species grow 1–18 m (3–59 ft), or more, with suitable support in trees. They have simple entire leaves, arranged in an opposite pattern, that are typically succulent. Leaves may exhibit a variety of forms, and may be smooth, felted or hairy; veination may be prominent or not, and many species have leaf surfaces flecked with irregular small silvery spots.
- Hoya anulata – Australia (Queensland), Indonesia (Irian Jaya), Papua New Guinea
- Hoya archboldiana – Indonesia, Papua New Guinea
- Hoya australis – Australia, Fiji, Indonesia (Irian Jaya), Papua New Guinea, Solomon Islands, Tonga
- Hoya australis ssp. australis – Australia (Queensland, New South Wales), Samoa, Vanuatu
- Hoya australis ssp. oramicola – Australia (Northern Territory)
- Hoya australis ssp. rupicola – Australia (Western Australia, Northern Territory)
- Hoya australis ssp. sanae Australia (Queensland)
- Hoya australis ssp. tenuipes – Australia (Queensland), Fiji, Indonesia (Irian Jaya), Papua New
- Guinea, Solomon Islands, Tonga
- Hoya benguetensis – Philippines
- Hoya bilobata – Philippines
- Hoya bordenii – Philippines
- Hoya calycina – Indonesia, Papua New Guinea
- Hoya calycina ssp. calycina Indonesia (Irian Jaya), Papua New Guinea
- Hoya calycina ssp. glabrifolia – Indonesia (Irian Jaya), Papua New Guinea
- Hoya carnosa – S. China, India, Japan, Taiwan, Australia (Queensland), Fiji
- Hoya caudata – Malaysia (Malacca), S. Thailand
- Hoya cinnamomifolia – Indonesia (Java)
- Hoya coriacea – Malaysia, Philippines, Thailand
- Hoya crassicaulis – Philippines
- Hoya cumingiana – Philippines
- Hoya diptera – Fiji (Viti Levu, Taviuni)
- Hoya diversifolia – Cambodia, Indonesia (Borneo, Java, Sumatra), Laos, Malaysia, Myanmar, Philippines, Singapore, S. Thailand, S. Vietnam
- Hoya eitapensis – Papua New Guinea
- Hoya elliptica – Malaysia, Thailand, Singapore
- Hoya engleriana – Cambodia, Laos, Thailand, Vietnam
- Hoya erythrostemma – Malaysia, Myanmar, S. Thailand
- Hoya finlaysonii – Indonesia (Borneo, Sumatra), Malaysia, Myanmar, S. Thailand
- Hoya fuscomarginata – Only known from cultivation.
- Hoya globulosa – India (Sikkim), Nepal
- Hoya heuschkeliana – Philippines (Luzon)
- Hoya hypolasia – Papua New Guinea
- Hoya imbricata – Indonesia (Sulawesi), Philippines
- Hoya imperialis Philippines, Malaysia
- Hoya inconspicua – Australia (Queensland), Papua New Guinea, Solomon Islands
- Hoya kentiana – Philippines
- Hoya kerrii – China, Cambodia, Indonesia (Java), Laos, NW. Thailand, S. Vietnam
- Hoya lacunosa – India, China, Malaysia, Singapore, Thailand, Indonesia (Borneo, Java, Sumatra)
- Hoya lanceolata – India, Nepal, Bhutan, Myanmar
- Hoya lanceolata ssp. bella – India, Nepal, S. Myanmar
- Hoya lanceolata ssp. lanceolata – Bhutan, India, Myanmar, Nepal
- Hoya latifolia – Myanmar, Malaysia, S. Thailand, Indonesia (Borneo, Java, Sumatra)
- Hoya limoniaca – New Caledonia
- Hoya linearis – China (Yunnan), India (Sikkim), Nepal
- Hoya longifolia – Bhutan, China, India, Nepal, Pakistan, Singapore, Thailand
- Hoya macgillivrayi – Australia (Queensland)
- Hoya macrophylla – Indonesia (Borneo, Java)
- Hoya magnifica – Papua New Guinea
- Hoya megalaster – Papua New Guinea
- Hoya meliflua – Philippines
- Hoya meredithii – Malaysia (Borneo)
- Hoya mindorensis – Philippines
- Hoya multiflora – China, Indonesia, Laos, Malaysia, Myanmar, Philippines, Thailand, Vietnam
- Hoya nicholsoniae – Australia (Queensland), Papua New Guinea, Solomon Islands
- Hoya nummularioides – Cambodia, Laos, Thailand, Vietnam
- Hoya obovata – India, Indonesia, Thailand, Fiji
- Hoya obscura – Philippines
- Hoya pachyclada – Thailand
- Hoya parviflora – India, Malaysia, Myanmar, Indonesia, Thailand
- Hoya parvifolia – Indonesia (Sumatra)
- Hoya pauciflora – India (Malabar, Kerala), Sri Lanka
- Hoya pottsii – China
- Hoya pubicalyx – Philippines
- Hoya purpureo-fusca – Indonesia (Java)
- Hoya retusa – India (Assam, Bombay Presidency), Indonesia (Sulawesi)
- Hoya revoluta – Cambodia, Indonesia (Borneo, Java, Sumatra), Laos, Malaysia (Malacca), S. Thailand, Vietnam
- Hoya serpens – Australia (Queensland), India (E. Himalaya), Nepal
- Hoya shepherdii – SW. China, India
- Hoya siamica – Cambodia, India, Laos, NW. Thailand, Vietnam
- Hoya thailandica – Thailand (Chang Mai)
- Hoya thomsonii – China (Xizang), India (Assam)
- Hoya tsangii – China, Philippines (Mindanao)
- Hoya verticillata – Brunei, Cambodia, E. India, Indonesia (Borneo, Java, Sulawesi, Sumatra), Laos, Malaysia, Thailand, Singapore
- Hoya vitellina – Indonesia (Java)
Postovi
