Erythrina sp. belongs to the family Fabaeae. In the above picture, diadelphous stamens are observed as we can see the two filament sections. The trees in this genus have pretty common names such as coral trees and flame trees because of their branching style and their orange to red petals respectively. Was this specimen collected in Hong Kong? I don't think I've encountered this kind of trees in the city before!
Erythrina sp. is under the family Fabaeae. The above picture shows a flower of Erythrina sp. This species has orange colored corolla(petal). The biggest petal is called banner which attracts the pollinator. Under the banner, we can see two petals which are fused and they are called keel. Next to the banner are wings. Banner, wings, and kneel all together form 5 corollas. In the middle part of the picture, we can see green calyx which is composed of 5 fused sepals. Erythrina sp. shows diadelphous stamens which is a type of Syndunamous stamens. Left one is pistil and right ones are stamens. Stamens have two parts: one with single stamen and the other with numerous stamens. When we cut the pistil, we can learn that this flower has superior ovary since the ovary is located above the attachment point of other floral parts. Furthermore, it shows marginal placentation (ovules are attached to the wall) with only one locule.
Erythrina sp. show odd compound leaf, zygomorphic flower, and raceme inflorescence. Zygomorphic flower is a flower showing bilateral symmetry, meaning that it can only be divided by a single plane since size and form of floral parts are unequal to each other. Raceme is a type of indeterminate flowers and flowers are on pedicels. Erythrina sp. can be used economically, for example, as medicine. Erythrina alkaloids can have anti-inflammatory and analgesic activity.
What is curious about Erythrina sp. is that why are they showing a diadelphous stamens? What are the advantage of having diadelphous stamens? Why is only one stamen separated from the others and what is the purpose?
https://plantsandtreesofnicaragua.wordpress.com/2018/01/09/erythrina-sp-coral-tree/
Erythrina sp. show odd compound leaf, zygomorphic flower, and raceme inflorescence. Zygomorphic flower is a flower showing bilateral symmetry, meaning that it can only be divided by a single plane since size and form of floral parts are unequal to each other. Raceme is a type of indeterminate flowers and flowers are on pedicels. Erythrina sp. can be used economically, for example, as medicine. Erythrina alkaloids can have anti-inflammatory and analgesic activity.
What is curious about Erythrina sp. is that why are they showing a diadelphous stamens? What are the advantage of having diadelphous stamens? Why is only one stamen separated from the others and what is the purpose?
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3249914/