Lobelia chinensis Lour .

Lobelia, perennial plant. Stems slender, prostrate, rooting at nodes, branches erect. Leaves Alternate, sessile or Subsessile, elliptic-lanceolate to linear. Upper Leaf axils usually 1-flowered, unbranched; pedicel slender, Bracteoles Glabrous; Calyx Tube Oblongconical; Corolla Pink or white. Capsule Obconical, Ca. 6 mm. Seeds ellipsoid, slightly compressed, subfleshy. Florescence May-october. It is found in the provinces of Yangtze Plain and South China; it is also found in other Asian countries east of India. Herbal Medicine, containing a variety of alkaloids, Qingrejiedu, diuretic detumescence effect, treatment of snake bites, ascites cirrhosis of the liver, advanced Schistosomiasis ascites, appendicitis efficacy.

Morphological perennial plant. Stems slender, prostrate, rooting at nodes, branches erect, 6-15 cm tall, glabrous. Leaves Alternate, sessile or Subsessile, elliptic-lanceolate to strip, 8-25 cm long, 2-6 cm wide, apex acute, base rounded to broadly cuneate, entire or apically distinctly serrate, glabrous. Flowers usually 1, upper leaf axils bearing branches; pedicel slender, 1.2-2.5(3.5) cm, base with 2,1 or no 1 mm Bracteoles, bracteoles glabrous; Calyx Tube Oblongconical, base tapering to indistinguishable from pedicel, 3-5 mm long, glabrous, Lobes Lanceolate, CA. As long as Calyx Tube, entire or proximally 1 pair of teeth; Corolla pink or white, 10-15 mm long, abaxially fissured to base, white pilose below throat, lobes all spread below, present a flat surface, 2-sided Lobes Lanceolate, longer, Middle 3 lobes elliptic-lanceolate, shorter; stamens about 8 mm long, confluent above middle filament, filament tube glabrous, lateral surface of filament of unconfluent part pilose, anthers Ca. 2 mm long, Dorsal glabrous or sparsely pilose. Capsule Obconical, Ca. 6 mm. Seeds ellipsoid, slightly compressed, subfleshy. Florescence May-october.

Common Problem Control Measures: Plant Lodging. CAUSE: Stem Rot caused by Botrytis infection; blight caused by Pythium infection. Solution: Do not let the plant grow in a long-term moist substrate; avoid stem in the dark before the wet state; more ventilation, reduce air humidity, regular spraying fungicide. Vegetative growth is vigorous and flowering is rare. Reasons: Application of excessive ammonium nitrogen and phosphorus fertilizer; low light intensity for a long time; too close to the basin. Solution: Strictly Control 20-10-20 and 20-20-20 high ammonium nitrogen and phosphorus fertilizer formula, increase the light intensity to 30,000 ~ 60,000 lux, in order to restore the stage of high-intensity light. There are disease patches on the leaves. There are necrotic patches on the leaves. Causes: Long Wet Substrate; Low Light; frequent high frequency watering, completely dry substrate between watering; high concentration of foliar fertilizer. The Solution: Avoid these situations. The plants are thin with few branches. REASONS: lack of early fertilization; the number of pinching (topping) is insufficient; too close to the basin. The solution: Avoid these situations.