Euphorbia coalcomanensis

Synonym:  Pedilanthus coalcomanensis 

By appearance it does not have any resemblance of a zig-zag stem on its structure as it is upright and the stem is more rounder. The plant is very sparse and often without much leaves. 
This one is not cultivated for its foliage - rather more for the flowers and often highly sought after for the unique display for the bird-like formation flowers.

When in strong shade it has a dark green appearance, the leaves are more oval round shape with slight crest around the edges. The foliage however morphed into sharper lance like formation but without any changes of coloration on the foliage unlike other types when exposed to too much sunlight.
These will only flower when receive good sun and will not bloom in shaded condition.

This one is highly cultivated for floral display - rather than foliage.
A clusters of needle like flowers and often sunbirds visit them for nectar, often identified locally as Little Bird Flower or Slipper Flowers.

Often Sunbirds or any nectar drinking birds are drawn to this species. Hence I highly recommend to cultivate this particular type of plant if you want to see a busy activity of nectar drinking birds in your garden.

Also it's often cultivated during festive season especially during Chinese New Year as to usher in prosperity during the New Year.

Do check more detailed information of Care & Cultivation from the Main Page Link below:

(Photo credits to Ellie Ng)

Zigzag Different Types and Images

Here is the link where I had put together a list of all of the different types and ID and images that I had come across. A database of all the different types & their characteristics. Please click on the link on the title above for the post.