Jasminum sp.- Kamrup district, Assam



https://08511630493324166816.googlegroups.com/attach/28c53f556980bb0c/4._Unknown_sp._-_Twining_branch_-_IMG_1127.jpg?part=0.4&view=1&vt=ANaJVrGbiyLlvHVu2ZQQt3jYXSU1Wk2xCCKfcaJfbrpEEdOTwNkQ9vn4mqFdkADS4wg-JbxAs5lj5DXoYVNjvBtg3gXspaXImGPRbuNlMW1s-iGvtzk64So
https://08511630493324166816.googlegroups.com/attach/28c53f556980bb0c/2._Unknown_sp._-_Straggling_branch_-_IMG_1125.jpg?part=0.2&view=1&vt=ANaJVrHFYgLLbkluYUCcMfzmQHjl67aFD65yvX5WvgigAClFlEFtuKk7Ps2jHE-PFAzNn6C7ISBqZKiahERc_V1rTdAdm_TnWw-Eu60BjkBXUkRQ-HSqJjY
https://08511630493324166816.googlegroups.com/attach/28c53f556980bb0c/8._Unknown_sp._-_Flower__IMG_1106.jpg?part=0.8&view=1&vt=ANaJVrGl2fhnj1WDv7p8Q731nXGPBPDKZLgGU5Jyh7HK-ZXWBCEhW9qJp4MpxT9Zg9WepFQJqZNhHqyr-aP0h4Y7LPixBFcKP-q8bMc3e7kZ_o9QJ8Dz5jE
 
https://08511630493324166816.googlegroups.com/attach/28c53f556980bb0c/3._Unknown_sp._-_Twining_branch_-_IMG_1126.jpg?part=0.3&view=1&vt=ANaJVrFyRakjKSUuYcc9EAsCn_kgC34Yi_kP7wUkwlZNisxO-g7EAz96fvCuQeIESjRD6BLOuz_XZoO1x4B5iVC-adDt5YAfAmPMjRsjjqWevFhPYsyVYJY
https://08511630493324166816.googlegroups.com/attach/28c53f556980bb0c/7._Unknown_sp._-_Flower_IMG_1105.jpg?part=0.7&view=1&vt=ANaJVrFUwlRlA54waXs9eikkF2tbmI9bT05Eqa1YiUZPBc8aJ6Iy6WHvQ3yoU45lAad0OKt7RxxE7-Lslq6eGXfW4vM5kfncHvz1v9-FWb-XT-gaNd11nsQ
https://08511630493324166816.googlegroups.com/attach/28c53f556980bb0c/5._Unknown_sp._-_Flower_bud_of_twining_branch_-_IMG_1115.jpg?part=0.5&view=1&vt=ANaJVrEKqsJFnulZCD-7U7DHKG9uWCN6fkBrERhSxL_bakflxYxf6k2a2PAtPT5MRs5LaMheUQxisZ_EkmQZ3v_oJRztMtlRlDS0qX6DF2Ng7ech96Yr8hU
Attached images are unknown shrubs. One of the interesting feature of this sp. I found is that some branches of this plant are straggling (IMG_1124 & IMG_1125) and some are twiner (IMG_1126, IMG_1127), both bearing flowers.
Date :21.12.2012
Location: Kamrup district
Family : Unknown
Genus & species : Unknown
Habitat: Grows wild on roky slopes.
Habit : Shrubs
Flower : Large, white with orange coloured corolla tube

I think Jasminum sp.
"It looks like Nyctanthus arbor tris-tris."
"It may be a Jasminum species."
I am not sure of Nyctanthes ..., as far as I know (and I can't claim too much) the flowers always have serration on the tip of the petals. Also it only blooms in the evenings.
Tried searching for all Jasminum species in FOI but didn't get anywhere...
What about Jasminum malabaricum ?
According to a document on the "variation in the flower of Jasminum malabaricum Wight", found in the net, "the flowers open during March and... a few left after the end of April". It also informs flowers with seven calyx teeth are rare and with eight teeth very rare.
J. malabaricum found in the FoI and in Flickr displays longer & narrower corolla tube.
I copy a few text from "Bengal Plants" :-
A. Erect shrubs or small trees -
(i) leaves subcordate or ovate .... calyx teeth short ------- J. arborescens Roxb.
(ii) leaves cuneate.... calyx teeth minute ------- J. roxburghianum Wall. 
B. Climbing, rarely sub-erect shrubs -
(iii) leaves all simple, branchlets pubescent, hairy or villous; calyx pubescent; cymes many flowered, bracts white prominent, calyx-teeth long.... sometimes not climbing ------ J. coarctatum Roxb.
(iv) leaves all simple, branchlets pubescent, hairy or villous; calyx pubescent; cymes many flowered, bracts not prominent, .... calyx-teeth short ... always climbing ------ J. scandens Vahl
(v) leaves all simple, branchlets pubescent, hairy or villous; calyx pubescent; cymes many flowered, bracts often absent .... calyx-teeth long, subulate, leaves hairy ------ J. pubescens Willd.
(vi) leaves all simple, branchlets pubescent, hairy or villous; calyx pubescent; cymes few flowered in wild (many in cult.), ... calyx-teeth long, subulate, leaves ovate ------- J. sambac Ait.
(vii) leaves all simple, branchlets pubescent, hairy or villous; calyx pubescent; cymes few flowered in wild (many in cult.), ... calyx-teeth long, subulate, leaves narrowly elliptic ---- J. listeri King.
(viii) leaves all simple; branchlets glabrous; calyx glabrous; ,,, cymes few-flowered; calyx teeth long; leaves acuminate,,,, 3-nerved ---- J. laurifolium Roxb.
(ix) leaves, at least some, with a pair of lateral leaflets, branchlets & calyx pubescent; .... cymes many-flowered ----- J. auriculatum Vahl. 
F. I. i. 92. describes -
J. laurifolium R.
Scandent, polished; leaves opposite, ovate-lanceolate, lucid three-nerved; flowers axillary and terminal; ...... very elegant climbing and twining; ... a native of mountainous countries east of Bengal, where it flowers during the cool season..... calyx from five to seven-cleft; corol tube twice the length of calyx, sub-clavate; border of form nine to tweleve, ensiform, spreading segments, which are as long as the tube; stamina within the tube.... style and stigma clavate, scarcely reaching to the anthers.  
But, F. I doesn't mention flower colour and i am not sure if the plant in this thread can be J. laurifolium R.
F. I. i. 96. describes -
J. angustifolium Vahl.
Shrubby, twining, ..... leaves opposite, petioled, ovate, smooth of shining deep green, flowers terminal..... most beautiful species of Jasmine... it abounds in every forest on the coast of Coromandel. Blossoms during the hot season; but in a state of cultivation flowers are produced the greatest part of the year. ..... flowers terminal generally three-fold, peduncled, large, white, with a faint tinge of red..... it grows easily in every soil and situation, is constantly covered with leaves.....
I do not think matches with images at Jasminum malabaricum Wight
It also does not have distribution there.

 
 
 
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