A Euphorbia rossii in my collection,
fully leafed out and flowering in spring.
From southwest Madagascar, Euphorbia rossii is a spiny succulent shrub that branches profusely and grows to 3 or 4 foot tall. It's leaves are long, narrow and straplike and fall off in winter. In spring and summer tiny reddish yellow flower structures called cyathia form. In time the plant forms a small caudex that can be raised for effect.
Euphorbia rossii is fairly easy to grow in any good cacti and succulent mix. Water moderately during it's growing season but water far less after the leaves drop. It can be propagated by seeds or stem cuttings.