Brief introduction of cactus flower seat and introduction of flower birth

Leaf cactus, the primitive species of    cactus, has differentiated inflorescences, that is, each flower has a separate pedicel. Other kinds of flowers grow directly on the stem. Sometimes several flowers are extracted from the same thorn seat, such as the genus Longshengzhu, Reed and Fairy finger, and so on. Many cactus plants have large stripes, some of which are so large that they are rare in the world. Such as the big flower snake whip column variety "Queen of the Night" flowers can be more than 30 centimeters in diameter. The mastoid flowers, on the other hand, are usually very small and dense at the top of the stem, which is also quite eye-catching.

The picture shows the cactus bearing flowers.

   is a means for plants to attract insects to achieve pollination, whether it is a solitary large flower or a dense group of small flowers.

   most columnar cactus flowers are planted on the side of the stem. Small globose species also bear flowers, such as Prunus and progeny, whose flowers often grow near the base. But most spherical species of flowers are borne at the top or near the tip of the young spines.

   flowers are usually drawn out of ordinary thorns, which previously looked the same as other thorns. However, there are many cylindrical and two spherical species:

In other words, there is a special organ-"flower seat" on the plants of rosette ball genus and disk jade genus, and the flower strips are drawn out from the flower seat. The flower seat is often densely hairy, and the shape of the thorn on the flower seat is very different from that of the thorn seat. In the past, flower seats were regarded as an important feature of this kind of plants, but later it was found that there were great differences between flower seats. For example, botanist Videlman found that some flower seats already exist before flowers are born, that is, true flower seats, while others appear with flowers, that is, the so-called false flower seats. Since then, concave and hat-shaped flower seats have been discovered. Finally, a flower seat formed after flowering is also found, which looks like a stinging or hairy one.

"pointing bad" is put on the flower bud, which is very eye-catching. The transition type discovered later blurs the boundary between the flower seat and the thorn set. for example, the shape of the thorns or hairs on the flowering thorn seat is different from that on the non-flowering thorn seat. The flower pedestals of the genera globose and Jade have distinct contours on the plant body, which are the most typical flower seats, but they are not related genera. Thus it can be seen that in different species and genera, the formation of flower seats must be carried out independently.

As a result, the flower pedestal is no longer regarded as a necessary symbol for the classification of species and genera. Even the flower seat that does not bloom is conspicuous because of its long white hair. On the other hand, among the dense clusters of flowers, they often go unnoticed. Under the cover of thick woolly hair, the buds are well protected, and young fruits often mature gradually in woolly clumps.

   is also well protected if the flower is planted in a deep recess on the plant. Some North American cacti with verrucous processes have this characteristic.

For example, the genus Jade produces a concave grain from the thorn seat, while the grooves of the pineapple ball, pine cone and conical jade grow all the way to the base of the verrucous process, that is, the wart armpit. The flower is also born in the armpit of verruca, and the bud can grow safely between the warts. Many species of warts have bristles or dense clumps of hairs in their axils, among which the buds are unknown.