Chapter 655: Forbidden Spell

Jasmine, bougainvillea, gardenia, hibiscus, lotus...

As the types of pollen Jiang Yuan identified became more and more numerous, even the criminal police who did not understand forensic botany felt greatly encouraged.

Don't look at the fact that most of them are common plants, but the places that can fully satisfy these pollen requirements are definitely not many, and may even be unique locations.

Jiang Yuan had no doubt about this at all. Although the victim may have traveled to multiple locations, the pollen on his body is divided by region and proportion. This is the most critical point of the pollen map.

Besides this, sunflower pollen is extremely unfriendly to the killer.

Insect-pollinated pollen is the type of pollen that forensic botanists like the most, which means that there are at least hundreds of people in the world who like insect-pollinated pollen very much.

Insect-pollinated pollen usually grows very thick and heavy because it does not need to drift with the wind like wind-pollinated pollen. For bees, insects, or hummingbirds, whether the pollen is thicker or thinner, they cannot feel the change in weight at all.

But for pollen, a thicker wall means better preservation conditions, and its ability to resist the external environment is also completely different. Therefore, the sunflower pollen Jiang Yuan saw grew directly like a space fortress, and its defensive power in the pollen world was about the same level.

Sunflower pollen at this level is naturally larger and easier to stick to people's clothes. At the same time, it is also easier to identify.

Ordinary LV1 forensic botany players couldn't possibly miss such large sunflower pollen.

However, the judgment of Asteraceae is really more cruel than cutting chrysanthemum beans for botany students. To confirm that it is sunflower pollen, it is estimated that it would take a lot of effort.

Jiang Yuan did not stop there.

This time, he found a specific classification illustration, carefully classified the sunflower pollen found, and finally concluded that the pollen belonged to edible sunflowers: Su Kui No. 2.

Only after doing this did Jiang Yuan let go of the microscope, rubbed his neck, wrote a simple appraisal report, and handed it to Tao Lu.

It actually only took a day or so, but for Tao Lu and the others, the clues obtained in this day were more than what they had obtained in the previous month.

Most importantly, after the "training" of looking for pollen sources last time, everyone had gained a lot of experience in this.

"Su Kui No. 2 is an edible sunflower, meaning the sunflowers we usually plant? The kind farmers plant?" Tao Lu looked at the appraisal report and handed it to Liu Cheng.

Jiang Yuan nodded and said: "Yes, sunflowers are divided into several major types. Common ones include cut-flower sunflowers, which are the sunflowers sold in flower shops. The flower branches are relatively long, the flowers form relatively quickly, and some have longer flowering periods. In addition, there are landscape sunflowers, potted sunflowers, and the edible sunflowers we found now, as well as oil-use sunflowers."

Cui Qishan, who was next to him, felt it was complicated and touched his head, saying: "I thought the pollen detected this time would be the kind of sunflower sold in flower shops, that is, the cut-flower type, right? Can this be distinguished? Just by pollen."

"Many varieties of cut-flower sunflowers have no pollen, such as Moulin Rouge and Chianti. Some famous varieties have different pollen colors, such as Black Oil. You can tell by the name that the pollen in the middle is black." Jiang Yuan also checked much of the content of this part on the spot, because new varieties of plants emerge one after another. Some pollen has changed, while others have not changed or changed very little, all of which need to be compared in real-time.

Cui Qishan and the others just nodded ignorantly, not knowing at all that Jiang Yuan in front of them had just silently cast a forbidden spell.

Even if the appearance of the pollen of new varieties of sunflowers has records and descriptions, they don't have pictures. In fact, most pollen has descriptions but no pictures.

To take a picture of a pollen grain, it needs to be wrapped in gold foil under a scanning electron microscope and then kept in a vacuum state to be accurately photographed. Therefore, some plants have pictures of pollen, but more do not.

This is also one of the reasons why forensic botany or pollen research in botany is always lagging behind. You think botany is about memory, like liberal arts. In fact, botany also requires your spatial imagination, as well as the ability to analyze, summarize, and conclude. It is purely science.

Jiang Yuan was also under the blessing of LV4 forensic botany, and then opened a temporary +1 skill, before comparing the correct type of sunflower pollen.

Cui Qishan and the others looked at the appraisal report and thought that forensic botany was just like this.

Jiang Yuan didn't need to explain this part in detail, only saying: "Although Su Kui No. 2 is an edible sunflower, judging from the pollen map it contains, jasmine, bougainvillea, gardenia, hibiscus, lotus, etc., are all common ornamental plants. The victim is likely to have fallen to the ground in a garden, courtyard, or park, and then became contaminated with these pollen. It is unlikely to be in a pure farmland."

"If we have to find a place where more than a dozen kinds of flowers are planted in the whole city, the scope is still a bit too large." Tao Lu said while lowering his head to ponder.

The reason he said it was in the whole city was because taking a corpse out of or into the capital was a very dangerous thing. The screening at the checkpoints in the middle was much stricter than ordinary toll stations, and many places also had police dogs to help. As long as the killer knows how to weigh the pros and cons, he also knows that abandoning a corpse in the capital is purely a sick brain.

Coupled with the third victim himself, who was mainly an escort in the capital and had no records of going out, no matter how you calculate it, it was the type of killing in the capital and abandoning in the capital.

But just as Tao Lu said, despite this, the area of the capital is still too large.

Jiang Yuan said at this time: "I think we can continue to check along the sunflowers. Although Su Kui No. 2 is a relatively common edible sunflower, its main planting areas are in the Northwest and Inner Mongolia. There are also some in the capital, but the quantity is very small. Therefore, in the capital, there must not be many people who sell and buy Su Kui No. 2 seeds..."

Actually, before he finished speaking, Tao Lu was already excited.

"We have experience in this area, checking the source of seeds... Well, counting the online sales records, there won't be many. If it is planted in a garden, only a very small amount of seeds will be bought, or it is asked from others. No matter which one, there must be a source. Once the source is found, we can ask where the sunflowers were planted." Tao Lu stood up, feeling that this case already had a clue.

Cui Qishan said: "It is also possible that the killer kept the seeds himself."

"Ordinary people are not so free." Tao Lu looked at Cui Qishan and said: "I mean keeping seeds, it's a bit difficult, right... In this way, let's check back 5 years to see who bought these sunflower seeds. If we can find the first scene, this case will have hope!"

"That's true." Cui Qishan laughed twice, then a flash of inspiration appeared, and he couldn't help but look at Jiang Yuan, saying: "There are also these lotus and other pollen, can we also determine a specific variety?"

Jiang Yuan replied with a smile: "Lotus is a perennial rhizome. However, I will look at the varieties of other flowers."

Even if he wanted to check, he had to wait for the temporary +1 skill to cool down before he could continue to check.

At this time, Tao Lu and the others couldn't care about this anymore.

While checking the source of sunflower seeds, they rushed to the scene and screened the farmers one by one.

Although the total amount was already a long list of hundreds of people, for the Zhengguang Branch, this was a normal investigation! ===== CHAPTER 656 =====