Hello, I am a doctor and I am preparing one medicine for asthma.I need to identify one herb from the following sloka..

Taduktaṃ viśvakośe śaṅkuḥ kīle gare
śastre saṅkhyāpādapabhedayoḥ iti sakāraśakārayornātibhedāt
Ekadeśavikṛtamananyavat iti nyāyena vṛkṣaviśeṣaḥ sugandhiḥ

I will be oblige for any help..