Introduction of Ze Xie:Water-plantain Rhizome or Rhizoma Alismatic.

TCM Herbalism:Medicinals and Classifications. ✵The article gives records of the herb Water-plantain Rhizome, its English name, Latin name, property and flavor, its botanical source one plant species, ①.Alisma orientale (Sam.) Juz., 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 Water-plantain Rhizome, its pharmacological actions, medicinal efficacy, and administration guide.

Rhizoma Alismatic(Water-plantain Rhizome).

dried herb slices of Rhizoma Alismatic Pin Yin Name: Zé Xiè.
 English Name: Water-plantain Rhizome.
 Latin Name: Rhizoma Alismatic.
 Property and flavor: cold, tasteless, sweet.

 Brief introduction: The herb Rhizoma Alismatic is the dried tuber of Alisma orientale (Sam.) Juz., used (1).to promote urine excretion for oliguria and edema, (2).to filter out damp in cases of diarrhea and leukorrhea, and (3).to purge heat in cases of bladder damp-heat. The herb is commonly known as Rhizoma Alismatic, Water-plantain Rhizome, Zé Xiè.

 shrubs of Alisma orientale Sam Juz grow in river water Botanical source: Herbal classic book and official herbal classics defined the herb Rhizoma Alismatic (Water-plantain Rhizome) as the dried tuber of the species (1).Alisma orientale (Sam.) Juz., it is a plant of the Alisma Genus, the Alismataceae family (water plantain family), the Alismatales order. This commonly used species is introduced:

(1).Alisma orientale (Sam.) Juz.

 plants of Alisma orientale Sam Juz grow in field Botanical description: Alisma orientale (Sam.) Juz is also known as A. plantago-aquatica L.var.orientale Sam., a plant of the Alismataceae family (water plantain family) and Alisma genus, it is commonly known as Alisma orientale, Asian water plantain, or Ze Xie. A perennial marsh plant, the plant grows up to 50~100 cm high. Underground tubers are spheric shape (globular), up to 4.5 cm in diameter, bark brown, and many fibrous roots densely grow on them. Leaves are radicicolous; petioles grow up to 50 cm long, the base is extended into the sheath-like (leaf sheath-shaped), 5~20 mm wide; leaf blades are broadly elliptical to oval (egg-shaped), 5~18 cm long, 2~10 cm wide, apex is cuspidate or mucronate (mucronated), base is wide cuneate (wedge-shaped), round or slightly cordate, entire, both surfaces are smooth; 5~7 leaf veins.

 a colorful drawing of Alisma orientale Sam Juz,root,stems and leaves,fruits Scapes (flower stalks) grow from the tuft of leaves, 10~100 cm long, inflorescences usually ramify in 3~5 whorls, branches have lanceolate or linear bracts, verticillated branches often ramify again, compose conical composite umbel, small pedicels differ in length; bracteoles are lanceolate to linear, pointed; 3 sepals (calyx lobes), broad-ovate, green or slightly purplish, 2~3 mm long, persistent; flower petals are obovate, membranous, smaller than sepals, white, shedding (deciduous); 6 stamens; many pistils, free; the ovary is obovate, flat-sided, style is lateral.

 Achenes are many, flat, obovate, 1.5~2 mm long, about 1 mm wide, the back has two shallow grooves, brown, style is persistent. Its flowering period is from June to August, the fruiting period is from July to September.

 Ecological environment: The plant grows on the edge of marshes or is cultivated. The plant is distributed in the northern, eastern, southwest, and northwest areas, and other areas of China.

 plant of Alisma orientale Sam Juz with many green leaves grow in water of river side Growth characteristics: The plant Alisma orientale prefers a warm and moist climate, seedlings should be shaded by foliage, adult plant prefers sunshine, afraid of coldness, and can be cultivated in areas at altitudes below 800 meters above sea level. It's better to choose paddy fields with sufficient sunlight, rich humus and slightly sticky soil, and reliable water sources, for cultivation. It should not be planted in cold waterlogged paddy fields with much sandy loam or low soil temperature, precious crops better not be rice or medium rice.

 dried pale brownish herb slices of Water-plantain Rhizome Characters of herbs: The root tubers of the herb are subsphaeroidal (near-spherical), elliptic, or oval (egg-shaped), 2~7 cm long, and 2~6 cm in diameter. The surface is yellowish-white or fallow (light yellowish-brown), has irregular transverse circinal shallow grooves and many tiny protuberant fibrous root marks, and some at the bottom have nodular bud marks. The texture of the herb is solid and firm, the fracture surface is yellowish-white, powdery, and has many fine pores. The herb has a slight odor, it tastes slightly bitter. The herb of a better grade is big, yellowish-white, and smooth, the texture of the herb is firm and full, rich in powder.

 Pharmacological actions: ①.significant diuretic effect, especially for patients with nephritis; ②.anti-platelet aggregation effect; ③.lower blood lipid, lower cholesterol, and antiatherosclerosis; ④.lower blood pressure; ⑤.lower blood sugar; ⑥.anti-fatty liver; ⑦.weight loss; ⑧.anti-inflammatory effects; ⑨.inhibitory effect on Staphylococcus aureus, Pneumococci, and Mycobacterium tuberculosis, etc.

 Medicinal efficacy: Diuresis, clears dampness and heat, excreting dampness, eliminate heat, treating stranguria. It is indicated for dysuria (difficulty in micturition), edema distension and swelling, diarrhea, oliguria, vomiting, diarrhea and dysentery, phlegm and fluid retention, dizziness, beriberi, pyretic stranguria with pain (painful heat stranguria), gonorrhea, spermatorrhea (nocturnal emission), hematuria (blood in urine), hyperlipidemia (high blood cholesterol levels), etc.

 Administration of Rhizoma Alismatic (Zé Xiè): 
Reference: Administration Guide of Rhizoma Alismatic (Zé Xiè)
TCM Books: ①.Internally:6~9 grams; ②.Internally:water decoction,2~4 qian (about 6~12 grams),or prepare to pill,powder; ③.Internally:water decoction,6~12 grams,prepared to pill,powder.
 Precautions and Adverse Reactions: should not combine the herb Rhizoma Alismatic with sea clam, clam.




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