Cordyceps sinensis (Berk.) Sacc.
Sphaeria sinensis Berk.
Family : Clavicipitaceae.
Vernacular names : Yar tsa gun bu (Am); Bu
(Km); Buti (Dn); Yarsagumba, Jivanbuti (Np).
Common names : Caterpillar fungus.
Habitat & distribution : Alpine meadows; 4500-
5200 m, WCE Nepal. Distributed in the Himalaya,
China. Locally found throughout the high alpine areas
such as Dokpa, Jagdulla, Kagmara, Pungmo, Ringmo,
Majphal, Numla, Bagala, Dho, Bijer, Saldang.
Diagnostic characters : Club-shaped parasitic
fungus; later becomes saprophytic on insect larva after
its death. It comes out of the anterior end of the larva
of the caterpillar (swiftmoth) during the monsoon.
Fructification dark-brown and stalk yellowish-white, 5-8
cm long.
Occurrence : Common.
Season of fructification: May-Jun.
Parts used : Fungus & insect larva.
Taste/Potency : Sweet (ngar)/Oily (num) &
warm (dro).
Use : Tonic and aphrodisiac.
Also used as tonic for yak and sheep.
Toxicity : Non-toxic.
Mode of use : Taken orally in
combination with Dactylorhiza hatagirea (D. Don) SoÛ,
honey and cowís milk as tonic and aphrodisiac. It is
also used singly.
Chief constituents : Plant contains cordycepic
acid, cordycepin and adenosine.
Harvesting : Harvested during May-Jul.
National status : HMG Nepal protection 2
(banned for export in unprocessed form).
Local status : Not vulnerable. Locally
collected for trade. Less threatened due to common
occurrence.
Major documentation : Chophel (1993), HMG
(1970), HMG (2001), IUCN (2000), Pohle (1990).
TRIBHUVAN UNIVERSITY 2080 Bachelor Level (4 Yrs.)/Science & Tech./ III Year Research Methodology [R.M.305] (Compulsory) Time: 3 hrs. Full Marks: 100 New Course Candidates are required to give their answers in their own words as far as practicable. The questions are of equal value. 10x10=100 Attempt any TEN questions. Define research. Explain the chief characteristics of scientific research. Define research problem. Explain the ways of selecting a meaningful research problem. Also, describe the methods of problem identification. What are the methods of data collection for the purpose of research? Discuss the ways of data collection activity by schedule. Also, describe different types of schedules. What is sampling? Discuss the needs of sampling for research work. A statistics practitioner would like to estimate a population mean within 15 units. The confidence level has been set at 99% and population standard deviation = 174. Determine the sample size. What are the methods of redu...
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