Hoya - R
- Ting Ting
- Aug 13, 2021
- 3 min read
Updated: Aug 18, 2021
R
Hoya radicalis Y.Tsiang & P.T.Li – China (Guangxi, Guangdong)
Hoya ralphdavisiana Kloppenb. – Philippines
Hoya ramosii Kloppenb. & Siar – Philippines
Hoya ranauensis T.Green & Kloppenb. – Borneo (Sabah)
Hoya reticulata Moon – Maluku
Hoya retrorsa Gavrus – Borneo (Sabah)
Hoya retusa Dalzell – W. India, E. Himalaya
Hoya revolubilis Y.Tsiang & P.T.Li – China (W. Yunnan, W. Guangxi) to Vietnam
Hoya revoluta Wight ex Hook.f. – Pen. Thailand to W. Malesia
Hoya reyesii M.N.Medina & Kloppenb. – Philippines
Hoya reynosae Kloppenb. – Philippines
Hoya rhodostele Ridl. – N. Sumatera
Hoya rhodostemma Schltr. – New Guinea
Hoya rigida Kerr – Thailand
Hoya rigidifolia S.Rahayu & Rodda – Sumatra
Hoya rima Kloppenb. – Philippines
Hoya rintzii Rodda – W. Malesia
Hoya rizaliana Kloppenb. – Philippines (Luzon)
Hoya rosarioae Kloppenb. & Siar – Philippines
Hoya rosea K.Schum. – New Guinea
Hoya rostellata Kidyoo – Thailand
Hoya rotundiflora Rodda & Simonsson – Myanmar
Hoya rubida Schltr. – Bismarck Arch
Hoya rumphii Blume – Jawa
Hoya rundumensis (T.Green) Rodda & Simonsson – Borneo (Sabah, Sarawak)
Hoya ruthiae Rodda – Borneo (Sabah)
R
Hoya sp. rangsan
Hoya sp. rangsan foliage.
(Photo credit: Bun Tay from https://www.facebook.com/photo/?fbid=10159734582636802&set=pcb.1319671538488918)
Hoya rebecca
Hoya rebecca foliage.
(Photo credit: Katherine Lim from https://www.instagram.com/hoyafreak/ )
Hoya rebecca flower.
(Photo credit: Angie Saw from https://www.facebook.com/groups/891827067940036/posts/1322995348156537/)
Brief notes:
Hoya retusa
Dalzell
Synonyms: Grass-leaved hoya.
Hoya retusa foliage.
(Photo credit: Katherine Lim from https://www.instagram.com/hoyafreak/ )
Leaves are dull green, linear, 5-6 cm long by 2-3mm wide; leaf apex retuse.
Flowers are weakly fragrant, with a light lemon like scent (strongest in the early evening). Corolla lobes white, corona wine red.
Flower Colour(s): White with purple centers.
Flower Texture(s): Smooth
Flower Grouping: Cluster / Inflorescence
Flower Symmetry:
Individual Flower Shape: Stellate / Star-shaped
Inflorescence Type: Umbel
Flowering Period: After Rain
Flower Lifespan on Plant: Several Days
Remarks: Needs cooler night temperatures to initiate flower bud formation
OVERVIEW:
Brief notes: Sunny, ample nutrients.
Plant Growth Form: Climber, Vine & Liana, Epiphyte
Lifespan (in Singapore): Perennial Native Distribution: Karnataka province, India.
Light Preference: Semi-Shade
Water Preference: Moderate Water, Occasional Misting
Propagation Method: Seed, Stem Cutting
Pest(s): Sucking Insects
Etymology: Retusa is from 'retuse', which means 'notch', referring to the depression down the center of each leaf.
FAQ
Yellow and scorched leaves?
Too much sun, or waterlogged soil (will lead to rot and death).
Thin or wrinkling leaves?
Cause: either root rot or prolonged under watering.
Dropping new leaves?
Water stress.
Slow or no growth?
Change in environment may sent the plant into a partial dormancy. Give the plant time to adjust to its new surroundings..
No flowers?
The main reason is that your Hoya isn’t getting enough light. Hoya Linearis won’t flower unless it receives very bright indirect sunlight.
References:
Hoya revoluta
(image)
Brief notes: Found at beach edge. Warm and lots of water.
Hoya rigida
(image)
Brief notes: Found in mangrove swamp with high humidity and moderate to bright light.
Hoya rosita
Hoya rosita flowers.
(Photo credit: Katherine Lim from https://www.instagram.com/hoyafreak/ )
Brief notes:
Hoya rotundifolia (square leaf)
Rodda & Simonsson
Hoya rotundifolia (square leaf) foliage.
(Photo credit: Katherine Lim from https://www.instagram.com/hoyafreak/ )
Leaves are dark green, oblong, to 4 cm long by 2cm wide. Leaves and stems with a layer of rusty/ dull reddish brown hairs.
OVERVIEW:
Brief notes:
Plant Growth Form: Climber, Vine & Liana
Lifespan (in Singapore): Perennial
Native Distribution: Myanmar
Preferred Climate Zone: Terrestrial
Light Preference: Full Sun, Semi-Shade
Water Preference: Moderate Water, Occasional Misting
Propagation: Seed, Stem Cutting
Pests: Sucking Insects
Hoya rubida
Hoya rubida flowers.
(Photo credit: Katherine Lim from https://www.instagram.com/hoyafreak/ )
Brief notes:
Ruthiae
(image)
Brief notes: limestone
Reference:
Disclaimer: All information provided is collated from online sources and tips from gardeners and plant hobbyists. Please feel free to point out any inaccuracies. You are also welcome to contribute your photos or care tips in the comments.
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