骨城屬刺的構造 The structure of Sarcocaulon spine

關鍵字 古城 刺 棘 解剖 型態
key word Sarcocaulon spine thorn structure Anatomy morphology



有些多肉的刺是由特化的葉梗變成的
Some succulent has spine that is a  Modified Petioles.

像是福貴樹
for example Fouquieria

骨城的刺也是特化葉梗，但他和福貴樹的一樣嗎?
Sarcocaulon also has Modified Petioles.But is it the same as Fouquieria ?

福貴樹的刺，葉子能夠被剝下來，像是撕膠帶那樣。
on Spine of Fouquieria the leaf can be peel off like a tape.

左邊還是右邊?

which one? left or right ?

但有些植物的葉梗刺，是可以直接從聯接處斷裂的。像是使君子
But some plant has a Petiolar Spine that can be break for the joint point.like Combretum indicum


骨城屬於哪種呢?
what kind of Petiolar  spine is Sarcocaulon ?


好心的花友小七，幫我拍了這些照片，回答了我的問題。
骨城的刺是屬於左邊那種，直接斷裂的！
Gloria Chen kindly took these picture for me and answer the question.
The structure of Sarcocaulon spine is the left kind.The kind that break for the joint point !