Morphological characteristics
Hedyotis diffusa (scientific name: Hedyotis diffusa): an annual loose herb, 15-50cm tall. The roots are slender, branched, and white. The stem is slightly square or flat cylindrical, smooth and hairless, with many branches emerging from the base. Leaves are opposite; sessile; blades are linear to linear-lanceolate, 1-3.5cm long, 1-3mm wide, apex acute, smooth above, sometimes slightly rough below, lateral veins not obvious; stipules membranous, base Combined to form a sheath, 1-2mm long, with a pointed apex. Flowers borne singly or in pairs in leaf axils, often with short and thick pedicels, sparsely sessile; calyx is simply spherical, with 4 lobes, and lobes are oblong-lanceolate, 1.5-2mm long, with eyelashes on the edges; corolla is white and funnel-shaped. Shape, 3.5-4mm long, with 4 deep lobes at the apex, the lobes are ovate-oblong, about 2mm long, bald; 4 stamens, inserted at the throat of the crown blade, alternate with the corolla lobes, filaments flat, anthers ovate, dorsally Upper, 2-chambered, longitudinally divided; inferior ovary, 2-chambered. Stigma 2 shallow lobes are hemispherical. Capsule oblate spherical, 2-2.5mm in diameter, ventrally dehisced, calyx persistent. The seeds are brownish-yellow, small, and have 3 edges. The flowering period is from June to September, and the fruiting period is from August to October.
Edit this paragraph geographical distribution
Distributed in Yunnan, Guangdong, Guangxi, Fujian, Zhejiang, Jiangsu, Anhui and other places. Due to the large dosage and the reduction of wild resources, artificial cultivation should be appropriately developed to meet the needs of medicinal use. Mainly produced in Fujian, Guangdong, Guangxi, Yunnan, Zhejiang, Jiangsu, Anhui and other provinces and regions. Grows in moist fields, ditches, roadsides and grasslands. [1]
Edit the medicinal properties of this paragraph
The whole body is twisted into a ball, gray green to gray brown. The main root is slender, about 2mm thick, and the fibrous roots are slender and light gray brown. The stem is thin, curly, brittle, easy to break, and the center pith is white. The leaves are often shrunken, broken, and easy to fall off; the stipules are 1-2mm long. Flowers and fruits are borne singly or in pairs in the leaf axils, and the flowers often have short and slightly thick pedicels. The gourd is oblate spherical, 2-2.5mm in diameter, the ventricle is dehiscent, the top of the calyx is 4-lobed, and the edges have short stinging hairs. The smell is slight and the taste is light. 2. Microscopic identification
Stem cross-section: 1 row of epidermal cells, almost square or oval, with single cells often protruding outward to form non-glandular hairs and outer cuticle. The cortex is narrow and the cells are round in shape; the endothelial cells are in 1 row. Phloem is narrow. 2-7 xylem vessels are connected into a single radially arranged row; the wood fiber wall is thick and lignified; the rays are narrow, often with 1-2 rows of cells, the wall is thin and lignified. The pith is broad, with large cells containing starch granules, and the pith is usually hollow. Calcium oxalate needle crystals are occasionally found in the parenchyma cells of the cortex and pith.
3. Powder characteristics
Grey-yellow. ①The leaf epidermal cells are polygonal, with straight vertical walls; the stomata are thousand-axis and oblong. ②The stem epidermal cells are elongated and have stomata. ③The main conduit is annular or threaded, with a diameter of 15-30μm. ④Calcium oxalate cluster crystals exist in the mesophyll tissue, with a diameter of 1y-15μm. ⑤Calcium oxalate needle crystals are common, clustered or scattered, 75-135μm long. ⑥ There are many starch grains, single grains are round, and complex grains are composed of 2-3 divided grains.