.
Shrub or small tree up to 3 m tall; leaves opposite, lanceolate to ellptic, glossy, 10-25 cm long, apex acute or acuminate, petiolate, petiole up 5-15 mm long; flowers tetramerous, in corymbose usually trichotomously branched cymes; calyx lobes rudimentry; corolla tube slender, 3-4 cm long, lobes 4, 12-15 mm long, red (in culivar Super King, yellow or orange in wild plants in native place), spreading, tip acute to acuminate. 
.
The species looks similar to I. coccinia with similar coloured flowers, as long corolla tube and and acute corolla lobes, but can be easily differentiated on the basis of longer narrowly elliptic leaves reaching 20 cm in length, leaves gradually narrowed towards base and with distinct up 4-7 mm long petiole, and narrower much more pointed corolla lobes.
.

/wp-content/uploads/2020/10/Ixora-casei-Delhi-2-6.jpg/wp-content/uploads/2020/10/Ixora-casei-Delhi-1.jpg
Ixora casei Hance, W. G. Walpers, Ann. bot. syst. 2:754. 1852
The species looks similar to I. coccinia with similar coloured flowers, as long corolla tube and and acute corolla lobes, but can be easily differentiated on the basis of longer narrowly elliptic leaves reaching 20 cm in length, leaves gradually narrowed towards base and with distinct up 4-7 mm long petiole, and narrower much more pointed corolla lobes.
Photographed from Kashlsa College Botanical Garden, Delhi in August


/wp-content/uploads/2020/10/Ixora-9.jpg
/wp-content/uploads/2020/10/Ixora%201.jpg

efloraofindia:”For Id 30092011MR21’’ ?Ixora Pune:   Sep 2011
Pune
Garden Shrub
Height -5 ft


Ixora coccinea is characterized by sessile leaves with rounded leaves. This one clearly has leaves narrowed at base, with a short petiole. THis should be Ixora casei


/wp-content/uploads/2020/10/Ixora%20Dwarf%20-3-.JPG

Ixora ‘dwarf’ from Paras nursery Panipat
it is Ixora coccinea or Ixora taiwanensis?
it was about 6-10 Inch high only
Nurserymen says this Chinese Ixora or dwarf Ixora

pls validate


I hope Ixora casei


I think you are right Sir, the id finally resolved


.


Rubiaceae Week: Ixora casei ‘Super King’ from Delhi: Ixora casei Hance, Ann. Bot. Syst. 2: 754 1852 cv. Super King

syn: Ixora duffii T. Moore
Shrub or small tree up to 3 m tall; leaves opposite, lanceolate to ellptic, glossy, 10-25 cm long, apex acute or acuminate, petiolate, petiole up 5-15 mm long; flowers tetramerous, in corymbose usually trichotomously branched cymes; calyx lobes rudimentry; corolla tube slender, 3-4 cm long, lobes 4, 12-15 mm long, red (in culivar Super King, yellow or orange in wild plants in native place), spreading, tip acute to acuminate.

Commonly cultivated in Delhi for its scarlet red flowers. Photographed from Khalsa College campus.


.


Rubiaceae Week: Ixora casei Hance from a Nursery in Panipat:  Ixora casei Hance from a Nursery in Panipat


Many thanks … for showing this Ixora. Ixora species are very confusing – especially those found in gardens.

Hoping we get more and more uploads of garden Ixora for help in ID.

Yes …, i agree with you, Ixora sps R really confusing.


/wp-content/uploads/2020/10/_DSC0162-8-7.JPG/wp-content/uploads/2020/10/_DSC0163-9.JPG/wp-content/uploads/2020/10/_DSC0158-3-4.JPG/wp-content/uploads/2020/10/_DSC0156-4.JPG/wp-content/uploads/2020/10/_DSC0161-4-1.JPG/wp-content/uploads/2020/10/_DSC0157-5-9.JPG/wp-content/uploads/2020/10/_DSC0159-0-1.JPG/wp-content/uploads/2020/10/_DSC0160-5.JPG
SK1565 12 Nov 2018 : 6 posts by 2 authors. Attachments (8)
Location:  Chumlingtar, Chitwan, Nepal 
Date: 06 October 2018
Elevation: 1000 ft.

Habit : Cultivated

Which Ixora ??


Leaf patern indicates to Ixora coccinea.


Leaves appear to be petiolate. This is not there is I. coccinea.



/wp-content/uploads/2020/10/P1020135-1.JPG
/wp-content/uploads/2020/10/P1020136-1.JPG

Ixora coccinea : 7 posts by 3 authors. Attachments (2)- around 950 kb each. 

again in Periyar, Kerala (900m), january 2019.
Seems to be I.coccinea. Can you confirm ?

For me the ID is correct.


I think closer to Ixora casei Hance rather than those of Ixora coccinea L. as per keys and details herein.


i believe that Ixora casei is endemic of Carolines Islands. I.coccinea has differents varieties, red, yellow, pink…

I. casie is also cultivated in India. You did not check the keys at the given page.
It has larger leaves and leaves have petiole.


I thought it was not in India. OK for Ixora casei.


.

/wp-content/uploads/2020/10/Ixora-fulgens-casei-Delhi-2.jpg/wp-content/uploads/2020/10/Ixora-fulgens-casei-Delhi-3.jpg/wp-content/uploads/2020/10/Ixora-fulgens-casei-Delhi-1.jpg

[efloraofindia:33098] Ixora fulgens from Delhi : Attachments (3).  21 posts by 5 authors.

Possibly Ixora fulgens from Delhi growing as hedge in Khalsa College Campus, Delhi. Please note leaf with short petiole, scarlet flowers with 25-35 cm long tube and acute corolla lobes. Please also consider I. casei, a very close species.


I also think this plant is Ixora fulgens Roxb because I used to have this plant in my terrace garden but later died.


If stipules are deciding factor, then my second photograph clearly shows nearly 7-9 mm long interpetiolar stipule, triangular at base and narrowed above.


As far as my knowledge extends I know that these two species of Ixora can be differentiated by prescence or abscence of stipules. As you plant has the stipules (stipulate) hence it is Ixora fulgens . I will still request you to check about this stipule character from the floras as you have lots of them with you, it will be very easy for you to recheck the morphology from the literatures. Kindly let me know wether I am right or wrong .


I have tried to search hard in the internet and books available with me. There are lot of photographs of I. casei, but hardly any of I. fulgens. Finally I stumbled upon information that I. salicifolia is a synonym of I. fulgens, that put me to doubt, because then it meant leaves would be linear-lanceolate like salix. This photograph confirmed my doubt

I think that my plant (and that uploaded yesterday by …, and which we have been considering as I fulgens) is I. casei and not I fulgens:

Ixora fulgens is a different plant with much narrower leaves

Here is another evidence that our plant is not I. fulgens (syn: I. salicifolia):
http://www.finerareprints.com/print_detail.html?stock_no=20161


Please have look at my third photograph. In midle flower under focus all anthers are fallen. Lowermost has one anther only, similar to your photograph.


Yes, thank you very much, … indeed very normal for the delicate anther to fall off during due course of pollination / or obvious lifecycle of the flower.


The matter seems to be still open. The book tropical ornamentals: a guide by W. Arthur Whistler mentions presence of interpetiolar stipules in I. casei, whereas another site (I lost track) mentions stipules absent. I am not very sure about second, because we think about different length of stipules but not total absence.
The main feature that goes in favour of I. casei is the leaves being clearly elliptic-oblanceolate whereas they are lanceolate or linear-lanceolate (in I. salicifolia, regarded as direct synonym of I. casei or I. casei var. salicifolia). Also the leaves of I. casei are larger.


Thank you for updating me about the literature. As Leaf morphology is the point of identification then you assumption can be right !!


Today I found another Ixora in Herbal Garden that led me to rethink and confirm more strongly that this plant is indeed I. caseiIxora fulgens, I found out has larger flowers with 15-17 mm long corolla lobeswhereas this one has 9-11 mm long lobes. This leads me think that this plant is I. casei. Please validate.


Its bit for me to get hold of the fine measurements from the photo !!! I think your assumption can be true !! And hopefully this is Ixora casei.


How about Ixora Chinensis. Please check the link.
http://en.wikipedia.org/wiki/File:Ixora_chinensis_1.jpg


In I. chinensis petals are obtuse at tip and leaves not with petioles.


please delete this entry and shift discussion under I. casei, because same plant has already been posted separately as I. casei.


I. fulgens a distinct plant has also been posted separately.


 

 

 


.

References:

The Plant List 1  The Plant List 2  GRIN  Ixora casei – Meet the Plants – National Tropical Botanical Garden   PlantFiles: Detailed information on Giant Red Ixora Ixora casei

Leave a Reply

Your email address will not be published. Required fields are marked *