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Species (& synonyms) |
Nervilia aragoana Gaud. |
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|
Vernacular name |
Not
known |
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Family |
ORCHIDACEAE |
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Taxonomic status |
Species |
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Habit |
Tuberous
herb |
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Habitat |
Grasslands |
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Original global
distribution |
Indo-Malaysia,
Pacific and Australia. |
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Current regional
distribution |
Karnataka,
Kerala and Tamil Nadu |
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|
- Elevation (m) |
|
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- Range (km2) |
<
20,000 (KA) |
<
3,000 (KL) |
<
20,000 (TN) |
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- Area occupied (km2) |
>
2,000 (KA) |
<
50 (KL) |
<
500 (TN). |
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- No. of locations |
<
50 (KA) |
25
(KL) |
<
20 (TN) |
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Population Trends |
|
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|
- % decline |
<
10 (KA) |
>
20 (KL) |
>
50 (TN) |
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- Time/Rate (years or
generations) |
10
years |
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- No. of mature individuals |
Not
assessed (KA) |
Not
assessed (KL) |
<
500 (TN) |
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Global population |
Not
assessed |
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Regional population |
Declining |
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Data quality |
General
field studies, informal sightings and indirect observation. |
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|
Recent field studies |
T.Ananda
Rao (1994-96), Coorg, Chikmagalur and Shimoga; K.Ravikumar, G.S.Goraya,
P.S.Udayan (1997) Charmady MPCA; Dasappa (1998), Yellapur, N.Kannada (KA). N.Sasidharan (1985-95),
Thrissur, Thekkady and Wynaad; A.G.Pandurangan (1995), Idukki; A.E.Shanawaz
Khan (1994), Ponallur, Kulathupuzha; S.Aroumougame (1993 –97), Nelliyampathy
(KL). K.Ravikumar (1992-94),
Keeriparai, Pachakumatchi hills; V.S.Ramachandran (1998), Kariyan shola (TN). |
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Threats |
Harvest
for medicine (Hm), Loss of habitat (L), Trade of parts (Tp), Botanical
collection, Fire (Sf), Wild animals grazing/trampling. |
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Trade |
Commercial |
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Other comments |
It
is an ephermal plant, which inhabits moist shady areas and is of microhabitat
specific. Has close association with bamboo. Tuber may be adulterated with
other medicinal Nervilia species.
Studies on commercial sampling for adulterant is necessary. Tubers are
relished by the wild bores, banquets and other herbivores that affect the
regeneration. |
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Status |
|
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-IUCN: |
LRnt (KA) |
VU (KL) |
EN (TN) |
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- Criteria based on |
Population
reduction (A1a.c) – KL Population
reduction (Aa.c) – TN |
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- CITES |
No |
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- IWPA (1972; 91) |
No |
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- National legialation |
Yes, in negative list of exports (Notification 2 (RE-98) dt 13.4.98,
1997-2002) |
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Recommendations |
|
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- Research management |
Monitoring
(M), Limiting factor research (Lr), Habitat management (Hm), Husbandry
research (H), Pharmacopoeia studies (O), Mycorhizal association studies for
germination (O), Life history studies (Lh). |
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- P.H.V.A. |
No |
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Cultivation prog.
Recommendations |
|
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- Cultivation |
Level
3 (research) |
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- Level of difficulty |
Level
2 (Moderately difficult) |
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Existing cultivation |
Yes |
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- Names of facilities |
Under
cultivation in Nisargadhama, Coorg. Sample plants are grown in KFRI and
TBGRI. |
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Previous assessment |
VU in Camp II (Feb 96) compiled by S.S.R.Bennet,
V.Chelladurai, R.J.R.Daniels, C.G.Kushalappa, Michael Maunder,
A.G.Pandurangan, Purshottam Singh, V.S.Ramachandran, S.R.Ramesh, K.Ravikumar,
Sally Walker, Sanjay Molur, N.Sasidharan, B.V.Shetty, M.Sivadasan, D.K.Ved,
Vinay Tandon, M.B.Viswanathan. |
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Sources |
P.S.Udayan,
M.B.Viswanathan, K.Ravikumar, A.E.Shanawaz Khan, S.Aroumougame, K.Ravikumar,
V.S.Ramachandran (persn. observn.). |
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Compilers |
M.Abdul
Kareem, M.Ahmedullah, T.Ananda Rao, N.Anil Kumar, Anjali Wadehra, Anjana
Mudappa, S.Aroumougame, S.S.R.Bennet, Dasappa, J.L.Ellis, K.R.Geetha,
R.Gopalan, B.Gurudev Singh, V.P.Hiremath, V.Irudayaraj, Jagat Ram,
C.R.Jawahar, P.John Jebaraj, C.G.Kushalappa, Mohan Karnat, N.Mohanan,
K.N.Murthy, D.Narasimhan, M.P.Nayar, S.Noorunnisa Begum, A.G.Pandurangan
V.Prabhakaran, V.S.Ramachandran, S.R.Ramesh, K.Ravikumar, Sanjay Molur,
N.Sasidharan, A.E.Shanawaz Khan, C.Seema Y.N.Seetharam, B.V.Shetty,
B.S.Somashekhar, T.S.Srinivasa Murthy, D.Stephen, Subhash Mali,
S.P.Subramani, T.S.Suma, Sumy Oommen, D.Suresh Baburaj, M.H.Swaminath,
P.S.Udayan, D.K.Ved, Vinay Tandon, M.B.Viswanathan. |
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