Some leaves have barbs on them, are the leaves mutated?

It's not that the leaf has mutated, it's just that the leaf has barbs in the first place, maybe you didn't notice it before.

No, this is a normal natural phenomenon, the result of the evolution of the tree to protect its leaves.

It's not mutated, it's just to protect the leaves.

This is pear rust, also known as red star disease. Pear rust spraying control: in pears.

Spraying on trees should be carried out within 25 days from the budding stage of pear trees to the end of leaf development, that is, the peak period of basidiosporous transmission and infection. Generally, after the pear tree spreads its leaves, if there is rainfall, and it is found that the cypress tree produces winter spore horns, spray 1500-2000 times of 20% powder rust Ning emulsifiable concentrate, and spray it once every 10-15 days, which can basically control the occurrence of rust. If it can't be controlled, it is necessary to add 800 times of 20% flusilazole chloraz, if the prevention and control is not timely, when the lesion (sex sporophyll) appears on the front of the leaf after the onset of the disease, spray 20% powder rust Ning emulsifiable concentrate 1000 times and Gaoke 20% flusilazole chloraz 800 times, which can control the harm and play a very good effect.

4] From the beginning of pear leaf development to the end of May, 1:2 200-240 times Bordeaux liquid can be sprayed; or 70% Dasheng M-45 800 times solution for protection. If the disease has been diseased, you can spray 20% powdery rust 600 times, enazole 3000 times, 10% flusilazole 1200-1500 times for prevention and control, pay attention to the flowering period can not be sprayed, so as not to cause pesticide damage.

Bamboo leaf pepper (also called kaleido-kalei, white pipe, bamboo leaf pipe, mountain pepper, etc.).

small deciduous trees 3-5 m high; The stems and branches are more acutely thorny, the base of the thorns is broad and flattened, reddish-brown, the spines on the twigs are straight and drawn horizontally, there are often small thorns on the midrib on the dorsal side of the leaflet, only the middle vein on the back of the leaf has clumps pubescence on both sides, or the shoots and inflorescence axes are covered with brown-rusted pubescence. The leaves have 3-9 leaflets, sparse 11, and the wing leaves are distinct, sparse with only traces; leaflets opposite, usually lanceolate, 3-12 cm long, 1-3 cm wide, pointed, sometimes broadly wedge-shaped at the base, dry posterior leaf margins slightly dorsal curly, leaf surface slightly wrinkled; or oval, 4-9 cm long, cm wide, the apex ** one is the largest, the base pair is the smallest; sometimes ovate, with very small and detached lobes on the leaf margin, or nearly entire, with oil spots only between the teeth or along the leaflet margin; The petioles are very short or sessile. The inflorescences are nearly axillary or concurrently borne at the top of the lateral branches, 2-5 cm long, with flowers within about 30; tepals 6-8, the same shape and size, about millimeters long; 5-6 stamens of male flowers, with 1 brownish-black oil spot at the top of the septum; sterile pistil cushion-like convex, apex 2-3 shallowly lobed; The female flowers have 3-2 carpels, 1 oil spot on each side of the back near the apex, the columella is obliquely bent dorsially, and the sterile stamens are **-shaped.

The fruit is purplish-red, with a few slightly convex oil spots, and the diameter of a single fruit petal is 4-5 mm; Seeds are 3-4 mm in diameter and brownish-black. The flowering period is from April to May, and the fruiting period is from August to October.

Thorns are the product of branch degradation or evolution. Generally, the flowers of this kind of plant are very sweet, in order to attract bees and butterflies to spread pollen. However, if the flowers are sweet, they will also attract large animals.

In order to prevent large animals from eating the flowers, some branches of these plants have evolved into thorns, so that larger animals will be injured when they touch the thorns, and the purpose of these plants is achieved.

Bamboo leaves.

Copy peppercorns

Latin scientific name: zanthoxylum armatum dcAliases:

Kaleihua needle, white pepper, bamboo leaf (Jiangxi, Hunan), mountain pepper (Guangxi), dog pepper, wild pepper (Henan, Guizhou, Yunnan), Ya pepper, Qin pepper, Shu pepper (plant name map).

Bamboo-leaved peppercorns, small trees or shrubs. Stems and branches are acute, reddish-brown, leaflets opposite, usually lanceolate, slightly wrinkled on the leaf surface; The inflorescence is close to the top of the axillary or concurrent stem side branches, with about 30 flowers; The fruit is purplish-red, with a few slightly raised oil spots, and the seeds are brownish-black. The flowering period is from April to May, and the fruiting period is from August to October.

Scientific name in Chinese. Bamboo leaf peppercorns.