I have several succulents that I have not been able to identify from books. Can anyone help me? The first I'm sure is a euphorbia, it has milky white sap. The last picture is of the flowers of the previous picture.
Possibly Euphoria caput-medusa I'm still trying to identify the Crassula.
The second picture is a Haworthia possibly coarctata but there are a couple of others that look similar.
The first is Medusa in all her glory - even a couple cristata in there so call it Euphorbia caput medusae cristata.
The second does look like Haworthia. No idea which one.
You might look through here to identify Haworthia: http://succulent-plant.com/families/aloaceae/haworthia.html
Haworthia is either coarctata or, more likely, reinhardtii. Next 'Haworthia-like' plant maybe Aloloba (have several of these and sure look alike). Don't even know what that last photo is of... but sort of looks like dilapidated Gasteria flowers. First plant does indeed look like Euphorbia caput-medusae
Your last plant is Astroloba rubriflora. It previously used to be known as Poellnitzia rubriflora, before they had a go at re-classifying Aloe / Haworthia / Astroloba and the likes.