No 19.  Hoya australis

A hardy fast growing species suited for ladders or baskets. Flowers 1cm across comes in bunches of 15 to 25 hanging from along the stems. Australis has been in cultivation for many years and is well known to collectors.

Requires protection from severe frosts and should be undercover in winter in all colder climates.

Heavily scented.

No 20. Hoya pubicalyx "Royal Hawaiian Purple"

A fast growing cultivar suited for baskets or ladders. Flowers 1cm+ comes in bunches of 20 to 40 hanging from along the stems. Bunches may be over 10cm across.
Narrow 10cm leaves show some flecking patterns.
Hardy but requires some protection in very cold climates.

No 20. Hoya pubicalyx "Royal Hawaiian Purple"

Close up of flower variation showing some reversion to the red buttons type hoya flower.

No 21. Hoya carnosa "Krimson Queen"

A fast growing variegated cultivar suited for baskets or ladders. Flowers 1cm+ comes in bunches of 20 to 40 hanging from along the stems.  Attractive outside variegated leaves create a very showy effect even without flowers. New growth has an attractive red coloration on the variegated outside margins.  

No 22. Hoya obovata

A attractive thick leafed species is well suited for baskets or ladders. Flowers 6mm across, comes in bunches of 15 to 25 hanging from along the stems.
Thick large round leaves up to 10cm across make this an attractive sought after species even without flowers.
Hardy but requires protection in very cold climates.

No 23.  Hoya kerrii (Valentines Hoya)
In USA kerrii is referred to as the Sweetheart Hoya.

A slow growing species suited for baskets or ladders. Flowers 6mm across comes in bunches of 15 to 30 hanging from along the stems. Kerrii produces very thick succulent leaves up to 10cm across that have a distinctive heart shape. Leaves are sparsely spaced and occasional pruning will improve shape of plant. 
Hardy and requires cover from rain and frost in cold climates.  

No 24. Hoya fungii

A species suited for baskets or ladder. Flowers 1.5cm across comes in bunches of 30 to 40 hanging from along the stems.
Fungii produces attractive green leaves on short stems.
Hardy but requires protection in very cold climates.

No 25.  Hoya polyneura "The Fish Tail Hoya"

A compact species suited for baskets. Flowers 8mm across comes in bunches of 10 to 15 hanging from the stem tips. Polyneura is easily grown and should be cut back occasionally to thicken growth. Regular feeding is also required to create an attractive specimen. Requires rain and frost protection in very cold climates and maybe shy to flower if kept too cold.  

No 26. Hoya merrillii

A compact species producing large succulent, shiny patterned leaves well suited for baskets. Flowers 8mm across comes in bunches of 10 to 20 hanging from along the stems.
Requires rain and frost protection in very cold climates and maybe shy to flower if kept too cold. 

No 27. Hoya vitellinoides (syn. H meredithii)

A species producing large ornate leaves up to 20cm across well suited for baskets. Pale cream flowers 8mm across comes in bunches of 10 to 20 hanging from along the stems.
Requires rain and frost protection in very cold climates and maybe shy to flower if kept too cold.

No 30. Hoya latifolia

Latifolia is a large species with thick fleshy leaves up to 15cm across.  It is a subtropical species that requires protection in very cold climates. Lightly scented. 

No 31. Hoya cv "Green Exotica 2"

The origins of this hoya are unknown and do not match the cultivar Green Exotic available in the rest of the world so I have labelled it No 2. 
This hoya suited for baskets or ladders. Flowers 1.5cm across comes in bunches of 20 to 30 hanging from along the stems. Green Exotica is a hardy fast growing species suited to almost all climates. Lightly scented.

No 32. Hoya cv Minibelle
'The Sweet Heart Hoya' (in Australia)

A fast growing hoya with a dense growth habit and narrow leaves well suited for baskets or ladders. Flowers 12mm across come in bunches of 10 to 15 hanging from along the stems. We are unsure of the origin of Sweet Heart and would like any information from anyone who knows this plant.
Hardy but requires some protection in very cold climates. 

Hoya sp. (either affinis, guppyi or sussuela)

A tropical species, I thought I would include a photo due to its intense colour.  Plants are not available.