於2018年發表的新物種。
此品種在201X左右就已經能在市面上買到了，不過數量極少。當時是以sp.nov的名字出售，現在終於有名字啦。
他是原產馬達加斯加東南部Anosy region，乾燥森林的巨大花麒麟。
在原產地可以長到6公尺高，栽培時可以輕易的超過100公分，老欉很容易靠奇特的長高型態辨認。他是這類中最大的物種。
學名BJ4，就是巨人的意思，不用解釋了。
只從根部少量分支，每根分支都會長非常高，成現一個漏斗型。
有明顯的短枝，也就是說會在莖上小叢小叢的長出葉子，每年重新長出新葉子。與龍樹科，福桂樹科相同。花麒麟這類物種，很多都有短枝特徵，不過他的特別明顯。
花朵有強烈的紅黃線條，是花麒麟類(Goniostema)最大的物種 。
New species of crown of thorns published in 2018.
This species has been available in the market around 201X, but the supply is extreme limited.. It was sold under the name of Euphorbia sp. nov now she finally has a name.
She is native to the Anosy region of southeastern Madagascar, biome is dry forests. a Gigantic crown of thorns The meaning of it;s Latin name is self explanatory.
It can grow up to 6 meters in the habita, and can easily exceed 100 centimeters in cultivation. It is easy to Identify the old specimen by the iconic size and branching pattern.no branch other then base. straight and slender ascending up , forming a funnel shape. She is the biggest among crown of thorns .
There are obvious short branches, which means that the leaves will grow on the small clumps on the stems, and new leaves will grow repeatedly forever. every year.Same as Alluaudia, Fouqeria.
Many species related to crown of thorns share this short branch characteristics, but she is particularly obvious. Flowers have strong red-yellow stripe.
容易和他混淆的物種是Euphorbia croizatii，這兩者都有往上長高，分枝少且直立，條紋花，短枝的特徵。
不過可以靠以下特徵辨認：
1.croizatii栽培時不容易超過50公分
gigantea 很容易就可以長到50 甚至100公分
2.gigantea 的葉子是松石綠色，croizatii是普通的綠色。
不知道什麼是松石綠色? 就是像龍神木那樣白藍白藍綠綠的。
如果把兩株放在一起比較很容易就能看出差異。
3..gigantea花比croizatii再更大一點，條紋更明顯一點，不過需注意花朵條紋會受環境影響！
日照不足是有可能開出淺條紋花的。
光山認為最好辨認的特徵是大小和分支差異，還有價錢 $$$$$。
栽培上似乎沒有什麼需要注意的點。大概就是長比較慢吧。
繁殖可以靠插枝。不過因為他生長習性類似柱狀仙人掌，分支很少，插支很難大量繁殖。
The species is easily confused with Euphorbia croizatii, both of share the characteristics of straight and slender , less branched and erect, striped flower, and short branches.
However, it can be identified by the following features:
1. Croizatii is not easy to grow more than 50 cm in cultivation.
Gigantea can easily grow to 50 or even 100 cm
2. The leaves of gigantea are turquoise green, and the croizatii is ordinary green.
If you put the two plants together, it is easy to see the difference.
3..gigantea flowers are a little bigger than croizatii, the stripes are more obvious
But note that the flower stripes will be affected by the environment!
Insufficient sunlight is possible to produce light-striped flowers.
kohinoor believes that the best distinguishing features are size and branch differences, as well as the price $$$$$.
There seems to be no major issue regards of cultivation . Other then it's a slow grower.
Reproduction can rely on cuttings. However, because of his growth habits , there are very few branches can be cut. is difficult to Reproduction in big number.
大小
E. croizatii 只有20~50公分高
E. gigantea可以輕鬆超過50 在原產地甚至可以長到600公分高
刺：
E. croizatii 的刺很密集生長，大小不規則。有一個12~18mm大的主刺，旁邊帶有3~5個小刺(3~8mm大) 在莖上的小突起上長一叢。
E. gigantea的刺則只有一種大小，15mm大的。獨自一根一根散開生長，比較不會一叢一叢的。
短枝：
E. croizatii,的莖上幾乎全被短枝覆蓋，長滿小叢葉子
E. gigantea的短枝比較少，莖只有一部份被葉子覆蓋。
葉子
E. croizatii 8-10 × 5-6 mm 淺綠色
E. gigantea .45 × 22 mm 淺綠色~綠松石色
Protologue(THE paper which describe this species for the first time):
Deux nouvelles espèces d'euphorbes ( Euphorbia L. section Goniostema , Euphorbiaceae) de la région de Fort-Dauphin, Madagascar
https://doi.org/10.5252/adansonia2018v40a12
該論文是鑽石開放的，法律細節我不太懂，總之就是可以在有連結的狀況下轉發裡面的內容。
this paper is diamond-open-access.
感謝張花友提供照片 注意這個特殊的分支型態
Pay attention to this special branch pattern.
感謝張花友提供照片
感謝張花友提供照片 注意看葉子是怎麼長出來的
Look how the leaves grow.
感謝張花友提供照片 注意花色的變化
這是同一株植物 但是花朵完全沒有條紋!
This is the same plant but the flowers are completely stripless!
