Thanks Surajit ji for a very detailed analysis with links. It should go a
long way finally nailing the identity. My understanding of differences
between two species under discussion is as under:
I. polyantha I.
finlaysoniana
1. Small shrub 1.
Shrub or tree reaching up to 18 feet
2. stipules broadly ovate 2.
Stipules triangular-ovate
3. Leaves 15-30 cm long 3. Leaves
10-17 cm long
4. Cymes densely covered with white hairs 4. Cymes
puberulous, not with white hairs
5. Calyx hairy, tube 3-5 mm long, 5. Calyx
glabrous, tube 1-1.5 mm long,
lobes 6-8 mm long
lobes 4-6 mm long.
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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://www.gurcharanfamily.com/
http://people.du.ac.in/~singhg45/
On Sun, May 12, 2013 at 7:23 AM, radha veach <[email protected]> wrote:
> Dear Surajit,
>
> the points I have written to you are based on my own observations of the
> two plants in the field and later confirmed by written texts.
>
> In the end all we have are our own experiences which we can offer to
> others.
>
> best regards
> Radha
>
>
>
>
> On 11 May 2013 22:30, surajit koley <[email protected]> wrote:
>
>> Dear Madam,
>>
>> Thank you very much for the points to be remembered about *I. polyantha* and
>> *I. finlaysoniana*. Some confusions still exist -
>>
>> 1. I. polyantha is a much smaller shrub.
>>
>> - Yes, it is so in Cooke -
>>
>> http://ia600406.us.archive.org/BookReader/BookReaderImages.php?id=floraofpresidenc01cook&itemPath=%2F21%2Fitems%2Ffloraofpresidenc01cook&server=ia600406.us.archive.org&page=n626_w299
>> - Also in Talbot -
>>
>> http://www.archive.org/stream/TalbotTreesBombay/TalbotTreesBombayPresidency#page/n323/mode/2up
>> - But not in Hooker -
>>
>> http://ia700609.us.archive.org/BookReader/BookReaderImages.php?id=mobot21753000004407&itemPath=%2F0%2Fitems%2Fmobot21753000004407&server=ia700609.us.archive.org&page=n143_w291
>>
>> 2. It thrives in a moist forest environment and not surrounded by
>> buildings.
>>
>> - I do not know about habitat, so i should refrain here. However,
>> Hooghly is a moist area and FoP informs it is cultivated in Pakistan.
>>
>> 3. I. polyantha flower heads are slightly flatter and less rounded.
>>
>> - Cooke - "Flowers in corymbiform cymes open or collected into a
>> globose head"
>> - Talbot - nothing found
>> - Hooker - "...... or open very-many flowered branches robust..." and
>> " ... collected into globose sessile head...."
>>
>> 4. In .I polyantha the branches of the cyme are covered in dense white
>> hairs. This can be clearly seen when the flowers are in bud.
>>
>> - Cooke - ".. usually densely clothed with white hairs....."
>> - Talbot - nothing found
>> - Hooker - " .... sometimes white with dense woolly spreading hair..."
>>
>> 5. The leaves of I polyantha have extremely short petioles and often the
>> leaves are sessile. Its leaves also appear more wrinkly than the flat
>> leaves of the cultivated plant in your pics.
>>
>> - Cooke - (in *I. polyantha*) petiole 1/8 to 3/8 th in. long. That
>> translates to about 3 mm to 9,5 mm, which is almost same as *Ixora
>> finlaysoniana* in FoC
>> - Talbot - nothing found
>> - Hooker - leaves sessile or short petioled
>> - Again i refrain about wrinkly leaves, because nothing found anywhere
>>
>> 6. In I. polyantha the fruits are bright red and even before they are
>> ripe you can see red calyx lobes at the base of the wilting flowers. *This
>> is a very noticeable feature.*
>>
>> - nothing found on red calyx lobes in Talbot and Hooker. Ripe fruits
>> are red in Cooke
>>
>> Now, for winkled leaves, red calyx, please check -
>> http://plantgenera.org/illustration.php?id_illustration=96985.
>>
>> Found *Ixora finlaysoniana* -
>>
>> - http://www.biolib.cz/en/taxonimage/id182195/?taxonid=213548
>> -
>>
>> http://ecflora.cavehill.uwi.edu/vhdetail.php?did=2438&sn=Ixora+finlaysoniana
>> -
>>
>> http://apps.kew.org/efloras/namedetail.do?flora=fz&taxon=54829&nameid=121493#DESCRIPTION
>>
>> I skipped eFI posts.
>>
>> Thank you.
>>
>> Regards,
>> surajit
>>
>>
>> On Sat, May 11, 2013 at 8:55 AM, radhaveach <[email protected]> wrote:
>>
>>> Dear Surajit,
>>>
>>> If you read the descriptions of Ixora polyantha in Cooke's Flora or in
>>> Talbot's Forest Flora of Bombay Presidency and Sind and compare them to the
>>> Flora of China description of Ixora finlaysoniana you will have all the
>>> answers.
>>>
>>> The obvious differences which can be seen in a photograph are as follows:
>>> 1. I. polyantha is a much smaller shrub.
>>> 2. It thrives in a moist forest environment and not surrounded by
>>> buildings.
>>> 3. I. polyantha flower heads are slightly flatter and less rounded.
>>> 4. In .I polyantha the branches of the cyme are covered in dense white
>>> hairs. This can be clearly seen when the flowers are in bud.
>>> 5. The leaves of I polyantha have extremely short petioles and often the
>>> leaves are sessile. Its leaves also appear more wrinkly than the flat
>>> leaves of the cultivated plant in your pics.
>>> 6. In I. polyantha the fruits are bright red and even before they are
>>> ripe you can see red calyx lobes at the base of the wilting flowers. *This
>>> is a very noticeable feature.
>>> *
>>> Santhosh Kumar has quite recently posted a clear photo of I polyantha
>>> which should clear your doubts.
>>>
>>> As far as I remember I. polyantha is also fragrant.
>>>
>>> I apologise if my previous reply cause some frustration.
>>>
>>> Requesting experts to add their comments.
>>>
>>> regards
>>> Radha
>>>
>>>
>>> On Friday, May 10, 2013 9:59:35 PM UTC+5:30, surajitkoley wrote:
>>>>
>>>> Dear Radha Ji.
>>>>
>>>> *Thank you very much.* But, why don't you think it is *Ixora polyantha* ?
>>>> I have two queries -
>>>> 1) Is *I. polyantha* fragrant?
>>>> 2) How do you differentiate the two species?
>>>> I searched, but - https://groups.google.com/d/**
>>>> msg/indiantreepix/W-AS4OWhx1U/**OLriIyMe4iYJ<https://groups.google.com/d/msg/indiantreepix/W-AS4OWhx1U/OLriIyMe4iYJ>
>>>>
>>>> Toptropical, Dave's, The Plant List conflict with each other. So does
>>>> FoC or FoP.
>>>>
>>>> *Thank you once again.*
>>>> *Regards,*
>>>> surajit
>>>>
>>>>
>>>> On Friday, 10 May 2013 15:05:35 UTC+5:30, radhaveach wrote:
>>>>>
>>>>> I don't think this is Ixora polyantha.
>>>>>
>>>>> Please see this efi post:
>>>>> https://groups.google.com/**forum/#!searchin/**
>>>>> indiantreepix/Rubiaceae$**20Week$3A$20Ixora$**
>>>>> 20finlaysoniana$20Wall.$20ex$**20G.$20Don$20from$20Delhi/**
>>>>> indiantreepix/p_O-MPwW9O8/**MnVH4bqpQigJ<https://groups.google.com/forum/#%21searchin/indiantreepix/Rubiaceae$20Week$3A$20Ixora$20finlaysoniana$20Wall.$20ex$20G.$20Don$20from$20Delhi/indiantreepix/p_O-MPwW9O8/MnVH4bqpQigJ>
>>>>>
>>>>> From this it seems that the commonly cultivated Ixora in many gardens
>>>>> is *Ixora finlaysoniana* Wall. ex G. Don, Gen. Hist. 3: 572 1834
>>>>>
>>>>> regards
>>>>> Radha
>>>>>
>>>>>
>>>>>
>>>>> On Thursday, April 11, 2013 11:32:14 PM UTC+5:30, surajitkoley wrote:
>>>>>>
>>>>>> Sir,
>>>>>>
>>>>>> This is a tree with highly scented big flowers. It cannot be *I.
>>>>>> parviflora* Vahl (*I. pavetta*
>>>>>> Andr.<http://www.efloras.org/florataxon.aspx?flora_id=5&taxon_id=242423581>),
>>>>>> neither *I. undulata* Roxb.
>>>>>> Photos were taken on 06-April-2013, in Hooghly.
>>>>>>
>>>>>> Thank you,
>>>>>> Regards,
>>>>>>
>>>>>> --
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>>
>>
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