Baiyao

[Pinyin] Bái Yào

[Alias] Baiyao Aconitum

[Source]
Medicine-based Source: RANUNCULACEAE no roots from Bin Chuanwu head.
Latin name of plant and animal fossil: Aconitum duclouxii Levl.var.ecalcaratum Fletcher et Luener
Harvesting and storage: summer excavation root, remove the stems and leaves, fibrous roots, washed and dried.

[Original form] free from Binchuan Wu head, a perennial 50-100cm. Carrot-shaped root, about 6cm, diameter of about 2cm. Stems erect, glabrous lower and upper inflection sparsely pubescent. Leaves alternate; petiole length 36-40cm, almost no hair, thick, with a short sheath; leaves kidney-shaped pentagonal, length 12-20cm, width 16-30cm, 3 full crack, all lobes the central triangle, 2 back to the small crack, the end back to the small lobes linear-lanceolate or narrowly triangular, slightly weakened hair was thinning above, glabrous below. Spend a majority of dense raceme; rachis and pedicels densely pubescent; base of the bracts often shaped split, the upper bracts ovate, not division; pedicels 2-4.5cm; bracteoles middle or lower part of the raw stalks , elliptic or oval-shaped oval. Flowers bisexual, bilaterally symmetrical; sepals 5, petal-like, blue, pubescent outside, on the helmet-like sepal boat-shaped, with the show, with short claws, long beak to the base 1.8-2cm, lateral sepals about 1.5 cm; petals 2, hairless, valve film about 10mm, lip about 5mm, no distance; stamens many, glabrous, filaments with 2 small teeth; carpels 5, yellow soft change of position. Lettuce follicle results. Most seeds. Flowering in September, the fruit of 10 months.

[Habitat distribution]
Environment: Born in 2600-4000m above sea level the mountain at the forest edge or gravel.
Resource distribution: distributed in Yunnan Jianchuan.

[Character]
Character identification, tubers cylindrical, 2-5cm, diameter of 1-2cm. Surface dark brown, relatively smooth, a little vertical wrinkles and a few spots taken root marks. Difficult to break hard, white section, with the powder.
Microscopic identification, root cross-section: the cortex of a young man brown cells; cortex cells scattered shaped stone advised. Broad group of phloem sieve hash. The upper layer of the root formation of ring shaped like kidney; middle cambium ring polygonal; the lower layer to form nearly circular ring. Xylem bundles arranged radially, a separate catheter. Marrow parenchyma-shaped.
Powder characteristics: 1. Square stone cell types, spindle-shaped or diamond-shaped, long 48-188μm, diameter 34-68μm, thick-walled, laminated clear, some visible pits. 2 starch grains single grain round, long round or triangular, diameter 8-14μm, umbilical point of a shape, herringbone or point; many complex particles by 2-4 grains.

Chemical Composition】 【first roots with the original species Binchuan Wu aconitine (aconitne), Bin Wu alkali (duclouxine).

[Identification] physical and chemical identification, TLC: Take powder of about 1g, 10% ammonia solution, 1ml, ether 10ml, quasi-dip 24h, filtration. Filtrate evaporated to dryness, the residue washed with dichloromethane into 1ml volumetric flask in the constant volume, as the sample solution. In another aconitine aconitine, hypaconitine with dichloromethane preparation of 1mg/1ml solution as a reference substance. In the high-silica gel GF254 plates (10cm × 10cm) on the point of the sample and reference substance solution 3μl, with cyclohexane - ethyl acetate - diethylamine (8:1:1) to start out, dried, sprayed with iodide bismuth potassium iodide iodine test solution mixture of color and other content. Test products for chromatography with reference substance in the angular spectrum of the corresponding position, substantially the same color spots.

[Taste] Weixin; and warm; toxic

【Indications】 rheumatism; pain. Main Fengshibitong; bone pain

Dosage Oral: fry 1.5-3g, fry. Topical: the amount, transfer deposited into powder.

[Excerpt] "Chinese Materia Medica"

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