Introduction of Yi Yi Ren:Coix Seed, Job's-tear Seed or Semen Coicis.

TCM Herbalism:Medicinals and Classifications. ✵The article gives records of the herb Coix Seed, its English name, Latin name, property and flavor, its botanical source one plant species, ①.Coix lacryma-jobi stapf., with a detailed introduction to the botanical features of this plant species, the growth characteristics, and ecological environment of this plant species, the features of the herb Coix Seed, its pharmacological actions, medicinal efficacy, and administration guide.

Semen Coicis(Coix Seed,Job's-tear Seed).

Semen Coicis:herb photo Pin Yin Name: Yì Yǐ Rén.
 English Name: Coix Seed,Job's-tear Seed.
 Latin Name: Semen Coicis.
 Property and flavor: slightly cold, tasteless, sweet.

 Brief introduction: The herb Semen Coicis is the dried ripe kernel obtained by removing the hard husk and seed coat of Coix lacryma-jobi Stapf, used (1).to invigorate the spleen and dispel dampness for treating diarrhea and edema, (2).to clear heat and discharge pus for treating lung abscess and acute appendicitis, and (3).for treating verruca plana. The herb is commonly known as Semen Coicis, Coix Seed, Job's-tear Seed, Yì Yǐ Rén.

 Botanical source: Herbal classic book defined the herb Semen Coicis(Coix Seed,Job's-tear Seed) as the dried ripe kernel obtained by removing the hard husk and seed coat of the (1). Coix lacryma-jobi Stapf., it is a plant of the Coix Genus, the Poaceae family (Gramineae, grass family) of the Poales order. This commonly used species is introduced:

(1).Coix lacryma-jobi stapf.

 Coix lacryma-jobi:fruiting plants Botanical description: The Coix lacryma-jobi stapf., is a plant of the Poaceae family (Gramineae, grass family) and Coix genus, it is commonly known as "tear grass and Yi Yi", annual or perennial, 1~1.5 meters tall. The fibrous roots are relatively thick, up to 3 mm in diameter. Stalk is upright, about 10 knots. Leaf blade is linear-lanceolate, length is up to 30 cm, width 1.5~3 cm, rough edges, thick midrib, protruding on the back; leaf sheaths are smooth, upper ones are shorter than internodes; leaves have hard tongue, about 1 mm long. Inflorescences pods generated bundles; female spikelets are located in the lower part of the inflorescence, where the bread is bony rosary-like, total pods are approximately equal to spikelet length; fertile spikelets first lining lower membranous, upperpart is thick papery. Apex is obtuse, 2nd Ying-shaped, wrapped in 1st Yingzhong; 2nd lateral malleolus shorter than 1st lateral malleolus, inner surface is similar to lateral malleolus inferior; 3 stamen, degenerate, pistil has long style; infertile spikelets, degenerate into tubular lancelets, often 2 or 3 spikelets in 1 section, sessile spikelets is first flattened, bilaterally ridged incurved with wings of unequal width, 2nd Ying the shape of the boat was both membranous and medial; 3 stamens; pedicel and sessile spikelets were similar but less or more degenerate. Carob fruit outsourcing hard tortoiseshell, ovoid or ovate-globose. Its flowering period is from July to September, fruiting from September to October.

 Coix lacryma-jobi:fruiting plants The Coix lacryma-jobi stapf., grows near the house, in the wilderness, by the river, in the stream or in the wet valley. This species was native to Southeast Asia but elsewhere is cultivated in gardens as an annual. It has been naturalized in the southern USA (the United States of America) and the New World tropics, distributed in most parts of China, cultivated everywhere in the country.

 Ecological environment: The plant grows in the house, wilderness, river, stream or wet valley. It is distributed in the major areas of China, more for cultivation.

 Coix Seed:herb photo Growth characteristics: The plant Coix lacryma-jobi prefers a warm and humid climate, afraid of drought, resistant to fertilizer. It can be planted in all kinds of soil. It has a strong tolerance to salt damage and moisture in saline-alkali land and marsh, but it is suitable to be planted on sunny, fertile soil or clay soil. Better avoid even cropping, it is not suitable for crop rotation with the graminaceous crops.

 Coix Seed:herb photo Characters of herbs: The kernel of the herb is oval or long elliptic, 4~8 mm in length and 3~6 mm in width. The surface is milky white, smooth, occasionally with the remaining yellowish-brown seed coat. One end is blunt and round, the other end is wider and slightly concave, and there is a light brown punctate hilum. The back is round and convex, and there is a wide and deep longitudinal groove on the ventral surface. The texture of the herb is solid and firm, the fracture surface is white, powdery. The herb has a slight odor, it tastes slightly sweet. The herb of better grade has big and full grains, white color, and no broken skin.

 Pharmacological actions: ①.anti-cancer and antimicrobial effects; ②.prevent or reduce bone and muscle contracture and has an exciting effect on the uterus; ③.hypoglycemic, antipyretic, sedative, analgesic effects.

 Medicinal efficacy: Invigorating the spleen and excreting dampness, removal of arthralgia and relieve diarrhea, relieving tendons and removing numbness, clearing heat and discharging pus, invigorate the lung, clearing heat, remove dampness through diuresis. It is indicated for dysuria (difficulty in micturition), dripping discharge of urine, arthritis with fixed pain caused by dampness, rheumatic arthralgia pain, damp-warm syndrome, diarrhea, diarrhea and morbid leukorrhea, spleen deficiency and diarrhea, stranguria with turbid discharge, leukorrhea, muscular constricture, flexion and extension problems, periappendicular abscess (acute appendicitis), atrophic lung disease, abscess of lung, edema, beriberi, flat wart.

 Administration of Semen Coicis(Yì Yǐ Rén): 
Reference: Administration Guide of Semen Coicis (Yì Yǐ Rén)
TCM Books: ①.Internally:9~30 grams; ②.Internally:water decoction, 0.3~1 liang (about 9~30 grams), or prepare to powder; ③.Internally:water decoction, 10~30 grams,or prepared to pill, powder, infusing in wine, cook porridge, or thick soup.
 Precautions and Adverse Reactions:The herb Semen Cocis should be used cautiously in conditions splenoasthenic constipation, during pregnancy.

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