Rehmannia glutinosa is everywhere.

Rehmannia glutinosa is a northern plant. It is no exaggeration to say that it is everywhere.

In fact, there is also a plant of the genus Rehmannia in the south-Tianmu Rehmannia. I once wrote a tweet for him. Tianmu Rehmannia glutinosa is a rare plant. In Hangzhou, the figure of heaven and earth can only be seen in the mountains of Lin'an or in the grass garden of Hangzhi.

The picture shows Tianmu Dihuang.

Therefore, I thought that Rehmannia glutinosa, like Tianmu Rehmannia glutinosa, was also "rare". But recently in the north, I found that Rehmannia glutinosa is completely different from his southern brother. He likes not only mountains and mountains, but also cities.

The picture shows Rehmannia glutinosa.

[Rehmannia Rehmannia glutinosa] Scrophulariaceae Scrophulariaceae > > Rehmannia

Speaking of Rehmannia glutinosa, perhaps the first intention that pops out of many people's minds is "Liuwei Dihuang pills". It is naturally based on Rehmannia glutinosa. According to the Chinese Pharmacopoeia, the prescriptions are: Radix Rehmanniae 160g, Cornus officinalis 80g, Cortex moutan 60g, Chinese yam 80g, Poria cocos 60g, alisma alisma 60g. This prescription has a long history and is said to have been created by Zhang Zhongjing in the Han Dynasty. The Song Dynasty simplified the prescription and became the "six flavors" of today. [1]

The cultivation of Rehmannia glutinosa has a long history. But cultivated Rehmannia glutinosa is not only used as medicine, in ancient times, Rehmannia glutinosa was also a yellow dye. The yellow tone of fresh Rehmannia glutinosa is similar, close to golden yellow, which is the exclusive yellow of ancient emperors. [2]

For the source of the picture, see [2].

Can be dyed yellow, all over the wild, the name of Rehmannia glutinosa probably came from.

When I went to the The Temple of Earth some time ago, I learned that the Ming and Qing dynasties offered sacrifices to heaven, earth, sun and moon in green, yellow, red and white respectively. Therefore, the sacrificial offerings used in the The Temple of Earth are often yellow. Rehmannia glutinosa, which is everywhere, gradually becomes honorable in my eyes.

Unfortunately, I didn't see Rehmannia growing in The Temple of Earth, but it grew luxuriantly on the siheyuan roof separated by The Temple of Earth.

This is also the first time I have seen Rehmannia glutinosa. But immediately, I was in the park lawn, on the kerb, in the cracks in the sidewalk, on the rock face. I saw Rehmannia glutinosa.

These wild Rehmannia glutinosa underground is not as thick as cultivated Rehmannia glutinosa, as can be seen from their barren growing environment. Compared with Tianmu Rehmannia glutinosa, wild Rehmannia glutinosa plants are smaller, with a height of about 10 to 30 centimeters.

The flowers are also much smaller than Tianmu Dihuang, and the colors are not bright-that is, the yellow of the land. The color inside the Corolla is a little darker, making people feel unfathomable.

All kinds of bees like to drill into its Corolla, and when they come out, they are covered with pollen.

Wikipedia entry of Liuwei Dihuang Pill

[2] Confucius Institute "homology of Drug dyeing: the Beauty of dyeing of Chinese Herbal Medicine", author: Shao Yun http://www.cim.chinesecio.com/hbcms/f/article/info?id=3b47b83a5f014de087e086f9aa03a1a3

Author: Jiang SB.

Picture: Jiang (except for instructions)

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