Arisaema species

 

 

at kodachadri hills, shimoga district, karnataka; Requesting fruiting plant id – efloraofindia | Google Groups

Arisaema sivadassani or Arisaema tortuosum ?;
 

identification no 51110sn1:  kindly identify. taken at my farm in mulshi, pune

date/time :october 10
Location:1500ft. above lonavala, mulshi, pune
Habitat: wild
Plant habit-tree/shrub/climber/herb: shrub possibly
Height/length: about 2 ft.
Other information-fragrance/pollinator uses etc. looks like corn, bright colours, shiny

Help for collecting Arisaema…!!!:   Can anybody tell, what is the best season to start collecting Arisaema C.
Martius (Araceae)??
I have some idea about the distribution of this genus in the Western Ghats region..!!!
But many are distributed in North eastern states!!!
It would be very useful, If you could share the locality where you have spotted them…!!
Also, any literature, monographs and reprints about the genus would be much helpfull…!!!

Different sp. of Arisaema are seen at Amboli, sindhudurg dist maharashtra state…i hv seen 2 sp personally

It is time you should start preparing for studying Arisaemas, the flowering should start by middle of April and may last up to June. Here are Eastern Himalayan species and their main flowering time. expect it to vary 15 days or so on either side: The Western Himalayan plants should flower 15-20 days later.
  
                                Eastern Himalayas                                Western Himalayas                            

Arisaema costatum:     May-June

A. griffithii:                   May-June

A. intermedium:           May-June,                                               June-July

A. propinquum:            May-June                                               June-July

A. erubescence:          May-July

A. flavum:                    May-June                                               June-July

A. jacquemontii:           June-August                                           July-August

A. nepenthoides:          May-June

A. tortuosum:               May-July                                                 June-July
                                                                               

A. curvatum                                                                               July-August

A. helleborifolium                                                                       June-July   

A. utile                        May-June                                                June-July                        

I am intending for a collection trip in North eastern states. But I dont have any idea regarding the distribution of these species. I think Simla is a hot spot for Arisaema..
Also I would like to explore Arunachal Pradesh and Assam…..!!
Do we have any members from there..??

Arunachal Pradesh is the best place in NE to study Arisaemas. I would suggest you to visit Kameng and Tawang districts of Arunachal Pradesh. Both East and West Kameng districts are full of Arisaemas. Further u can move to Tawang area where I’ve observed a few species. If you have more time in hand….try to visit Siang (either East, West or Upper) districts also.
You can also contact … who is working in Dera Natung Government College of Itanagar as an Asstt. Professor. He has worked on Araceae of Arunachal Pradesh and has good knowledge on Arisaema and their localities in Arunachal Pradesh.
Hope this helps.

Thank you very much for the information.
Unfortunately, i am not able to make the trip this year as my felllowship has not come yet.
Also, the flowering season is almost complete for Himalayan regions, I guess.
I hope to make it next year.
Anyway I would like to contact … Do you have any contact number or email ID? Anyway thanks again for your help..

I think June-August is the best time for Amorphophallus sp. in ASSAM. During my field surveys in the western Assam, I have collected A. krausei, A. muelleri, A. napalensis. Attached is A nepalensis.

Actually am working on genus Arisaema only… 

identification no170811sn3: Kindly identify the plant. A wild guess Arisaema tortuosum
date/time: July/Aug
location: mulshi, Pune
habitat: wild
plant habit: herb
height/length: about 3 ft.

Do you have a picture of the leaves.
It will be easier to confirm.

Could be a species of Arisaema. But not possible to identify without seeing the habit and inflorescence. may be A. murrayi. I could collect A. murrayi from the same locality.

But …, the fruiting inflorescence (size), number of fruits (equal or more number of female flowers) and the leaves (whatever little visible) gives an impression that this could be a species Amorphophallus to me.
May be we will wait for more pictures in which we can see the leaves clearly.
You can see an leaf associated with the infructescence. But leaflets are not clearly visible. I suppose that leaf belongs to the same plant only.. Usually in Arisaema, peduncles are enclosed by the sheathing leaf base, forming a pseudostem. But in A. murrayi and some allied species from Northern Western Ghats, this pseudostem is either absent or much shorter compared to Arisaema tortuosum.
But in Amorphophallus, being a biennial plant, flowers and leaves are never observed togusually flowers appear with out leaves. Also leaves are usually pinnate or decompound in Amorphophallus.
I think, considering the presence of a leaf, we can rule out the chance for Amorphophallus.
I had been to this locality last year and I could collect Arisaema murrayi from there, which more or less similar to this plant. But I can not confirm without flowers. We can not rule out the possibilty of Arisaema neglectum (now treated as a synonym of Arisaema tortuosum) also. I assume the leaflets to be broad and obovate in shape, which is usually not seen in A. neglectum. Also the length of the psedostem not matching.
A snap from another angle showing leaflets can supplement the evidences for the ID.

I agree with …, without more data impossible to say what it is, a close-up of the leaves would be very helpful as well as a close-up of the berries to see any remnants of stigma or spadix appendix. The leaflets seem too broad for an Amorphophallus and also the leaves of Amorphophallus are always divided in 3 equal parts at the center of the leaf where it is attached to the petiole.  
If from Sinhagad near Pune and indeed an Arisaema it could be either murrayi or a robust specimen of neglectum like … says. Neglectum is NOT a synonym of tortuosum, there are several stable characters that distinguish them from each other and they grow side by side in certain locaties in Maharahstra without producing hybrids. Length of pseudostem is comparable between murrayi and neglectum in most forms but in general not a reliable character.

“But in Amorphophallus, being a biennial plant, flowers and leaves are never observed togusually flowers appear with out leaves. Also leaves are usually pinnate or decompound in Amorphophallus.”

Yes I agree with … and … I totally forgotten this fact. I was thinking of unusual number of fruits for Arisema.
I am not familiar with Arisaema murrayi. May be if we get a complete picture of leaf, we may able to tell.

Any way, new plant to me.

 
 
 

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