✵The TCM herbalism is also known as pharmaceutics of Traditional Chinese Medicine, or Chinese pharmaceutics, is the branch of health science dealing with the preparation, dispensing, and proper utilization of Chinese herbs. It is majorly composed of Introduction of Chinese Medicinals, Classification of Chinese Herbs, Formulas, and Patent medicines.
Classifications of Herbs:Antiasthmatics Herbs.
Introduction: Antiasthmatics: an agent or substance herbs that relieves cough and asthma(or dyspnea), usually by ventilating,cleating or moistening the lung, or directing lung Qi downward, stringing lung Qi or resolving phlegm.
✵Till the date Oct 10th,2019, there are Totally  kinds of common TCM herbs,  kinds of related plant species, are recorded in this category. These Antiasthmatics Herbs are briefly introduced separately:
Flos Daturae(Datura Flower).
Brief Introduction: The Herb Flos Daturae is the dried flower of Datura metel L.(family Solanaceae), used to relieve cough, asthma, gastralgia, rheumatalgia, and epilepsy.
Semen Lepidii seu Descurainiae(Pepperweed Seed or Tansy Mustard Seed).
Brief Introduction: The Herb Semen Lepidii seu Descurainiae is the dried ripe seed of Lepidium apetalum Willd., or Descurainia sophia(L.) Webb ex Prantl.(family Cruciferae), used (1).to purge the lung for relieving cough and dyspnea with excessive phlegm, and (2).to induce diuresis for treating edema.
Fructus Aristolochiae(Dutchmanspipe Fruit).
Brief Introduction: The Herb Fructus Aristolochiae is the dried ripe fruit of Aristolochia contorta Bge., or Aristolochia debilis Sieb. et Zucc.(family Aristolochiaceae), used to clear the lung and resolve phlegm for relieving cough and dyspnea due to heat in the lung, and also to remove heat from the large intestine for treating hemorrhoids.
Fructus Perillae(Perilla Fruit).
Brief Introduction: The Herb Fructus Perillae is the dried ripe fruit of Perilla frutescens(L.) Britt.(family labiatiae), used as an antitussive, antiasthmatic and expectorant for treating chronic bronchitis with thin white phlegm and stuffy feeling in the chest, and also as an aperient for relieving constipation, often simplified as Su Zi.
Semen Hyoscyami(Henbane Seed).
Brief Introduction: The Herb Semen Hyoscyami is the dried seed of Hyoscyamus niger L.(family Solanaceae), used (1).to relieve cough and in cases of asthma for bronchial asthma, (2).to relieve gastralgia, and (3) to induce tranquilization.
Radix Physochlainae(Funneled Physochlaina Root).
Brief Introduction: The Herb Radix Physochlainae is the dried root of funnel-shaped physochlaina, Physochlaina infundibularis Kuang(family Solanaceae), used to relieve cough and dyspnea, and induce tranquilization.
Brief Introduction: The Herb Herba Cymbopogonis is the dried aerial part of Cymbopogon distans(Nees)A. Camus (family Gramineae), used to relieve cough and dyspnea.