Pu Xiaoxiang's question just scratched Shi Yang's itch, and he talked endlessly without waiting to sit down: "If you want to say that boxwood and privet, rose and yueji, it is really difficult to distinguish, let alone you, many students are scratching their heads, the main reason is not how similar they are, and then similar to the Asteraceae family, the great wind family is so chaotic, and the Rosaceae family is so hateful? As far as I know, many regions call holly euonymus holly or big-leaved holly, small-leaved privet small-leaved holly, and both holly euonymus and big-leaved boxwood are called big-leaved boxwood, which is a mess. In fact, the privet belongs to the order of Cinnamomoma, the holly euonymus belongs to the order of Euonymus, and the large-leaved boxwood belongs to the order Sapindium, with a distance of 108,000 miles! However, the relationship between holly and large-leaved boxwood is slightly closer, and they both belong to the order Sapind, but holly belongs to the family of holly and the genus of holly, and the large-leaved boxwood belongs to the family of boxwood and boxwood, and they are still far apart. With a little basic plant taxonomy, it's easy to separate them. ”

Jiang Shuiyuan saw Pu Xiaoxiang's bewildered expression of "who am I, where am I, and what am I going to do".

Shi Yang didn't realize it, and still said like a river: "Unfortunately, the current middle school textbooks pay more attention to cell structure, morphological function, genetic variation, biological evolution, etc., but basically do not talk about the daily use of plant taxonomy. Fortunately, the introduction to taxonomy is relatively simple, especially angiosperms, which can be quickly searched by ordinary people according to their roots, stems, leaves, flowers, and fruits. In the case of roses and moons, the leaves of roses are sunken and wrinkled, without luster, and the back of the leaves is hairy, while the surface of the leaves is very flat and shiny, and there are no hairs on the back. Looking at their stems, the roses with poor erection and hard and thin thorns are the roses, while the ones with good erection and sparse and flat thorns are the moon seasons. As long as you know these two things, ordinary people can't fool you!"

Pu Xiaoxiang's eyes fluttered, and he covered his mouth and chuckled: "It's really good, after learning these professional knowledge, I won't be afraid that you will use Yueji to deceive us girls in the future!"

Jiang Shuiyuan shrugged beside him: "The reality is exactly the opposite of what you imagined. It's only for fear that someone else will give you roses, and you will feel that you have been deceived!"

"What do you mean?" Pu Xiaoxiang was puzzled.

Shi Yang took the initiative to explain: "Compared with the moon season, roses not only have more thorns, short flowering period, but also grow ugly. Therefore, the roses that we usually see and sell in flower shops are actually seven or eight times out of ten. - Of course, it can't be said that it is the moon season, and the accurate expression should be the cross between the moon season and the rose. ”

Pu Xiaoxiangqiang said with a smile: "Hehe, these trivia of biology are really interesting, it's just eye-opening!

"Of course, of course!" Shi Yang's IQ has approached zero, and the rest is all instinctive reactions: "Let me casually say a few cold things about the human body, such as no matter what your skin is, 10 billion pieces of dander fall from you every day, so when you put your hands on the table, you will inadvertently be covered with the dander shed by others." ”

Pu Xiaoxiang suddenly withdrew his hands on the table.

Shi Yang is very satisfied with the effect of his remarks: "In addition, there are dust mites in any room of our house, they grow on mattresses, carpets, mats and any other warm and dandruffy place, and their food is the dander that we keep shedding. ”

Pu Xiaoxiang was itchy all over, and couldn't help but want to go home for an all-round cleaning.

Shi Yang seemed to guess Pu Xiaoxiang's thoughts: "No matter how much you clean, clean, and disinfect, it is useless, you must know that at any time, there are more than 200 kinds of organisms living in your body or on the surface of your body, and there are more than 100 million microorganisms living in your mouth, and the weight of parasites in your body will occupy 1/100 of your weight." ”

Pu Xiaoxiang's face began to turn pale.

Shi Yang's eyebrows fluttered even more: "It's right to turn pale." According to biology, the reason why humans turn pale when they are extremely scared is because the blood is flowing from your face to other places. This function of the human body made it possible for primitive people not to die of excessive bleeding when they were bitten by wild animals. ”

Jiang Shuiyuan was a little speechless about Shi Yang's bad taste, and couldn't help but mention him a few words: "Hey, hey, in such an elegant and stylish place as the café, what do you say about microorganisms and parasites? Vulgar or not? Our Miss Pu Xiaoxiangpu likes gardening plants, you might as well tell some interesting stories about flowers and plants!"

The little fat man's emotional intelligence finally didn't go offline: "Yes, yes, let's talk about some gossip knowledge of plant taxonomy." For example, strictly speaking, the watermelons and melons we eat are not fruits, but vegetables, because they all belong to the pumpkin family of the Cucurbitaceae family. Especially melon, it belongs to the cucumber genus under the pumpkin family, and it is a brother to the cucumber that you girls often use. ”

Pu Xiaoxiang showed his surprise at the right time: "It turns out that melons and cucumbers are close relatives, but their appearance and taste are completely different! By the way, cucumbers can be sliced and applied to the mask, and melons also have the same effect?"

Shi Yang couldn't help but speak: "This, I don't know about this." ”

"Is there any other kind of trivia?" Pu Xiaoxiang glanced at him at the right time.

The little fat man immediately resurrected on the spot full of blood: "Yes! Yes! Of course there is! Let's talk about lotus flowers and water lilies." The intuitive impression of these two plants is that they are very similar, even if they are not the same species, they should be a family, so both Engler and Cronquist - these two are world-famous plant taxonomists, and the taxonomy system of flowering plants they created is still widely influential in the current academic community- Both put lotus and water lily in the same group, the difference is that Engler placed them both in the family of water lilies, and considered the lotus flower and water lily to be cousins, while Collanquist elevated the water lily family to the water lily order, and divided a separate lotus family among them, that is, they were distant cousins. However, according to the sequencing results, the latest APG system tells everyone in the water lily family: There is a traitor among us. ”

"Lotus?"

In the latest APG system, the lotus family is classified into the order Yamanosauridae, and there is the Yamanosauridae along. Mountain longan may be very strange to ordinary people, but macadamia nuts (also known as macadamia nuts) should be very familiar, right? Mountain dragon ophthalmology is the family where macadamia nuts are located, so we can give science to the people around us when eating macadamia nuts: the relationship between this product and lotus seeds is closer than lotus and water lilies!"

"Interesting!"

"Parallel to the lotus family is the plane tree family, which is the family where the French plane tree, the English plane tree, and the American plane tree are located, of course, they are not plane trees, and the real plane trees belong to the family of the order Mallow. In addition, there is the Qingfeng vine family - well, it is very easy to understand that the Qingfeng vine genus and the lotus family are juxtaposed, after all, one is the white lotus and the other is the Qingfeng vine. ”

The second monk Pu Xiaoxiang was puzzled: "What do you mean?"

The little fat man smiled and pointed at the source of the river: "Why, you can ask Mr. Jiang!"

This is really a joke that is so cold that you have to cover the quilt! Jiang Shuiyuan complained in his heart, and replied helplessly: "Because the genus name of the Qingfeng vine genus is Sabia. ”

"Hahahaha!" the little fat man was pleased with his humor.

"Huh. Pu Xiaoxiang was also laughing, but he suddenly sympathized with Jiang Shuiyuan, who had been tortured by Shi Yang all day: listening to this kind of inhumane cold joke is like entering a cold palace!

The little fat man didn't realize it, and continued to talk eloquently: "To say that the lotus family is also quite lonely, there are only 1 genus and 2 species in the whole family, one is our common lotus, and the other is the American yellow lotus. Like the lily, the royal lotus, and the pinny grass all belong to the water lily family......"

Pu Xiaoxiang listened to it for more than half an hour, and then looked at his watch with a regretful face: "Ah, before I know it, it's already nine o'clock, it's too late, I have to go back quickly! Today, I am fortunate to hear Shi Yang's wonderful narration, which allows me to fully appreciate the wonders of biology, especially plant taxonomy, which is really eye-opening and beneficial." It's a pity that the time is too rushed, and there are still many questions that I haven't had time to ask you for advice. ”

The little fat man was also unsatisfied: "Yes, plant taxonomy is very wonderful. It's a pity that time is limited, so I can only talk about the beginning, and there are many more interesting and interesting things to talk about!"

Pu Xiaoxiang took out his mobile phone and blinked his watery eyes: "Then Shi Yang, what is your mobile phone number?" I'll save it and call you again when I have time, okay?"

"Okay, good, happy!" Jiang Shuiyuan felt that Shi Yang's eyes were like 500 light bulbs at this moment, and he was blind.