Sir my querries based on the following key from Dr. Almeida's flora on
Euphorbia L. :
1. Stems not developed above ground; leaves all
radical---------------------------------------------------------------------------------------
2
2. Cymes only once
dichotomous-----------------------------------------------------------------------------------------------
E. fusiformis
2. Cymes 3 or more than 3 times dichotomous
---------------------------------------------------------------------------------------------3
3. Cymes 3 times dichotomous; bracts triangular -acute or
triangular -lanceolate----- -------------------E. panchganensis
3. Cymes 4-5 times dichotomous; bracts broadly
triangula--------------------------------------------------------E.
Khandalensis
1. Stems well developed above ground; leaves not
all
radical--------------------------------------------------------------------------------4
4. ---------
The entire long keys follows. Have uploaded the same in one of mails in the
last few days.
Would like to get your opinion on omission of floral info. in keys to be
developed and whether that would ensure correctness of the keys. Thankyou.
regards,
Rashida.
On Fri, Mar 11, 2011 at 9:16 PM, Gurcharan Singh <[email protected]> wrote:
> Rashida ji
> Please clarify where you want to use radical leaves or not. All leaves
> radical means there is no stem at all and a leafless scape would arise at
> the time of flowering to carry the inflorescence up. On the other hand if
> all leaves are not radical means there would be some radical (basal) leaves
> and then some leaves on the aerial stem.
>
>
>
> --
> Dr. Gurcharan Singh
> Retired Associate Professor
> SGTB Khalsa College, University of Delhi, Delhi-110007
> Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018.
> Phone: 011-25518297 Mob: 9810359089
> http://people.du.ac.in/~singhg45/
>
> On Fri, Mar 11, 2011 at 8:55 PM, Rashida Atthar <
> [email protected]> wrote:
>
>> Sir, my clarification is for - the leaves all radical and leaves not all
>> radical - should it be be a key or not .
>>
>> Sir, also request you to have a relook at Samir ji's post and the colour
>> of the cyathia I think red should be E. caducifolia and green should be
>> E. neriifolia. Sorry, but I feel omission of important floral elements
>> will lead to some confusion in the keys. Hope this is taken as constructive
>> criticism!
>>
>> regards,
>> Rashida.
>> On Fri, Mar 11, 2011 at 8:40 PM, Gurcharan Singh <[email protected]>wrote:
>>
>>> Rashida ji
>>> Stem is developed in both. In practice in shrubs the branches arising
>>> from base are known as stems only. The difference is of common stem better
>>> known as trunk. In trees we have a trunk which is single for some distance
>>> after which the branches arise (E. nivulia and others). In Shrubs there is
>>> no trunk and individual branches (stems) arise from the base.
>>>
>>>
>>>
>>> --
>>> Dr. Gurcharan Singh
>>> Retired Associate Professor
>>> SGTB Khalsa College, University of Delhi, Delhi-110007
>>> Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018.
>>> Phone: 011-25518297 Mob: 9810359089
>>> http://people.du.ac.in/~singhg45/
>>>
>>> On Fri, Mar 11, 2011 at 8:35 PM, Gurcharan Singh
>>> <[email protected]>wrote:
>>>
>>>> Thanks a lot Pankaj ji
>>>>
>>>> Members can take help of both the keys.
>>>>
>>>>
>>>> --
>>>>
>>>> Dr. Gurcharan Singh
>>>> Retired Associate Professor
>>>> SGTB Khalsa College, University of Delhi, Delhi-110007
>>>> Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018.
>>>> Phone: 011-25518297 Mob: 9810359089
>>>> http://people.du.ac.in/~singhg45/
>>>>
>>>>
>>>> On Fri, Mar 11, 2011 at 8:25 PM, Pankaj Kumar
>>>> <[email protected]>wrote:
>>>>
>>>>> Stem without spines
>>>>> Leaves red/brown/reddish-brown …………………………........Euphorbia
>>>>> cotinifolia
>>>>> Leaves green or green with variegations
>>>>> Leaves usually present for short
>>>>> duration towards the terminal end of stem ..……………......Euphorbia
>>>>> tirucallii
>>>>> Leaves present for longer duration
>>>>> not just confined to the terminal ends
>>>>> Leaves alternate scattered distichously
>>>>> …………............Euphorbia tithymaloides
>>>>> Leaves alternate, scattered spirally
>>>>> (not distichously atleast)
>>>>> Bracts uniformly coloured
>>>>> (yellow or red or white in colour) …………………….......Euphorbia
>>>>> pulcherrima
>>>>> Bracts coloured but not completely
>>>>> Bracts red coloured towards
>>>>> the basal part ……………………………......………...Euphorbia
>>>>> heterophylla
>>>>> Bracts white coloured towards
>>>>> the basal part …………………………………....……...Euphorbia
>>>>> cyathophora
>>>>>
>>>>> Stem with spines
>>>>> Stem red/brown/reddish-brown in colour,
>>>>> normally not more than 1.5cm thick ……………………….......Euphorbia milii
>>>>>
>>>>> (excluding polyploid hybrids)
>>>>> Stem green/white/greyish-green/variegated,
>>>>> normally more than 3cm thick
>>>>> Stem almost cylindric
>>>>> Trunk absent, place of attachment
>>>>> of spines raised ……………………………………..............Euphorbia
>>>>> caducifolia
>>>>> Trunk present, place of attachment
>>>>> of spines almost embedded atleast not raised …………...Euphorbia
>>>>> nivulia
>>>>> Stem angular or winged
>>>>> Wings 3-4
>>>>> Wings straight, sinuate or dentate
>>>>> Stem green without
>>>>> white bands
>>>>> …………………..............................…Euphorbia antiquorum
>>>>> Stem variegated with
>>>>> white or white bands
>>>>> between two wings
>>>>> …………..…......................…...Euphorbia lactea
>>>>> Wings spiral ………………………........................…….Euphorbia
>>>>> tortilis
>>>>> Wings 5-6 ……………………………......................…...….Euphorbia
>>>>> royleana
>>>>>
>>>>> Varieties may be kept separately I assume.
>>>>> Key is 98% yours and I just added and deleted few things so even less
>>>>> than 2% of my knowledge involved.
>>>>> Regards
>>>>> Pankaj
>>>>>
>>>>>
>>>>> --
>>>>> ***********************************************
>>>>> "TAXONOMISTS GETTING EXTINCT AND SPECIES DATA DEFICIENT !!"
>>>>>
>>>>>
>>>>> Pankaj Kumar Ph.D. (Orchidaceae)
>>>>> Research Associate
>>>>> Greater Kailash Sacred Landscape Project
>>>>> Department of Habitat Ecology
>>>>> Wildlife Institute of India
>>>>> Post Box # 18
>>>>> Dehradun - 248001, India
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>
>
>
