It is some kind of Acacia but thornless. My idea.



This one flowers in April, May, June when the earth is parched. Heavenly scent at sunrise, dissipates as the day heats up.
Regards,
Masud.

Acacia nilotica is widely grown in Sindh province if that is where they are..

http://www.memoireonline.com/0...

Acacia nilotica is a tree 5–20 m high with a dense spheric crown, stems and branches usually dark to black coloured, fissured bark, grey-pinkish slash, exuding a reddish low quality gum. The tree has thin, straight, light, grey spines in axillary pairs, usually in 3 to 12 pairs, 5 to 7.5 cm (3 in) long in young trees, mature trees commonly without thorns. The leaves are bipinnate, with 3-6 pairs of pinnulae and 10-30 pairs of leaflets each, tomentose, rachis with a gland at the bottom of the last pair of pinnulae. Flowers in globulous heads 1.2-1.5 cm in diameter of a bright golden-yellow color, set up either axillary or whorly on peduncles 2–3 cm long located at the end of the branches. Pods are strongly constricted, hairy, white-grey, thick and softly tomentose

http://en.wikipedia.org/wiki/A...

http://www.kew.org/plants-fung...

http://botanical.com/botanical...

The seed pods of Acacia nilotica are constricted, I wonder if this only happens when the seeds are mature?

http://www.tropicalforages.inf...

This may be the answer:

Nine sub-species are recognised. Hybridization between the various ssp. occurs and has been influenced by human's seed dispersal. Within the A. nilotica complex the pods are very variable.

http://pages.bangor.ac.uk/~afs...

http://www.winrock.org/fnrm/fa...

Acacia nilotica ssp. hemispherica?

fruit almost straight or slightly wavy

http://www.efloras.org/florata...

Janet then what is this?



and i can assure you that the above has thorns 2 to 3 inches long, nasty very nasty. Mine has none.
"Distribution: Confined mostly to the edges of dried stream beds near Paradise Point and adjoining areas, c. 15 miles from Karachi proper."
That above reported position is Sindh. Sindh is at sea level, winters are mild while summers are in a way pleasant (sea breeze). That above plant is at 4500 feet, winters are minus 5c and summers touch 50c. Some variation in Nilotica is there according to terrain.
Now check these two names " Paraserianthes", "Albizia". It seems Acacia has branched off into "Wattle". Let me know what you make of it.

The above one is Acacia modesta and it to has short stubby thorns.
Regards,
Masud.

Masud, look at description which I quoted in my first post, where I bolded the words "mature trees commonly without thorns".

I have always known Acacia commonly called "Wattle", I grew up in Australia and that was many years ago now!

In one of the links I provided above, it says "A. nilotica occurs from sea level to over 2000 m. It withstands extremes of temperature (-1 to 50?C)," in the following link which provides much information.

http://www.winrock.org/fnrm/fa...


" Paraserianthes" and "Albizia" have similar looking leaves, the flowers are different.

Your Acacia could be another species but Acacia nilotica is the only one which commonly comes up in a google search, although I have found other species mentioned there is little information and no photos. The flower form of yours certainly matches that of A. nilotica, although they look paler yellow, and if mature trees can be thornless there is a very good chance it is that.

http://www.tropicos.org/RankBr...

There are 26 Acacias reported if you open the link in your browser. A single photograph would have been worth reams of paper/data. Acacia nilotica, even if you blindfold me i would recognise. As to thorns on nilotica, thats old growth which sheds but fresh has thorns. In Flickr enter "Flora Indica" you will see all shapes of Nilotica.
In Monsoons when snakes get flooded out they will climb Modesta but never Nilotica or they become ant bait on injury.
Wattles and Mesquite and Acacia, Australian meat trade/ wheat trade a retired old sea dog.
Regards,
Masud.

Janet, you might spend awhile on Flickr the way the flora has been misidentified.
Regards,
Masud.

Acacia gageana.
Acacia filicioides.Acacia angustissima. I like the seed pods of this one.
Acacia decurrens.
Acacia catechu.
There are 1600 siblings of Acacia. The above i have narrowed down from shape of seed pod but do concentrate on the last one. The terrain suits it the most.
Regards,
Masud.

Going through your list Masud ..

Acacia gageana .. is not on the Discoverlife list .. but it's an accepted name.

http://www.discoverlife.org/mp...

http://www.theplantlist.org/tp...

A herbarium specimum, appears to have small spines.

http://www.iiim.res.in/herbari...

Pods shorter and broad ..

http://apps.kew.org/herbcat/ge...

It does have 'prickles' ..

http://www.efloras.org/florata...

Acacia angustissima var. filicioides ... could be!

http://swbiodiversity.org/sein...

But, it's a synonymn of Acaciella angustissima var. filicioides which is itself unresolved ..

http://www.theplantlist.org/tp...

Although, Acacia angustissima looks different .. or maybe not?

http://www.discoverlife.org/mp...

Acacia decurrens has more compact flower heads with more florets ..

http://home.vicnet.net.au/~car...

Acacia catechu flower form is totally wrong ..

http://en.wikipedia.org/wiki/A...

http://www.motherherbs.com/aca...

I'll look at the others in the list later.

More photos of Acacia angustissima .. it's thornless!

http://www.tropicalforages.inf...

. ID'ing them is a adventure all of its own. Would it help if i point out that the wall is eight foot high and this Acacia is only three years old? Seems as if it is on growth hormones.


http://en.wikipedia.org/wiki/I...
http://en.wikipedia.org/wiki/F...
Impatiens balfourii. Is there agreement on the this ID? or
http://en.wikipedia.org/wiki/I...
http://www.flickriver.com/phot...
Impatiens pallida? I go with the last.
Regards,
Masud.

Plus the Acacia seeds are paper light and can fly. Under ideal conditions it can be invasive plus its a moisture lover.
Regards,
Masud.

Regards,
Masud.

The seed pods on your plant are very long and narrow with many seeds, very unlike those of Acacia angustissima so I would discount that. The long narrow seed pods may help to identify it, I went through the list you gave on tropicos but couldn't find a match which is thornless.

There are several yellow Impatiens, a closer shot of the flowers may help, also climatic conditions and location it's growing in as many Impatiens prefer cool, damp and shady locations.

Acacia, I have the flu so i am not being able to concentrate. Its the seed pods only, which in the end cause all the confusion. I wish there was some kind of software, enter the parameters of the plant and at least it would narrow down the list for humans to be able to take the ID to its logical end. Just now i have a list of 260 Chinese Acacias but like i said flu and fever. The Acacia is growing at an altitude of 4500 feet at the foothills of the Himalayas.. Summer max temp 45c and winter min temp -5c. This particular Acacia has its feet in moisture and i don't think it would take prolonged period of dryness( my guess). I have seen seed pods like this on Acacia bush type varieties. We have those also growing along rivers and streams. My route has not taken me in that direction as yet or i would have posted a pic of that Acacia also. Now, can a bush Acacia change shape into a tree?
Sorry Janet, i think i will have to go through the Chinese list. For you i have put down the URL.
http://www.acacia-world.net/ht...

Impatiens. They are growing beyond 6000 feet. Shaded and moist soil. Summer temp max 32c/ night time 16c. Winter temp min -10/night time but chill factor can go way down when the breeze from the icy slopes flows downwards after sunset, true for summer and winter.

As to the China element, the Himalayas are a natural boundary between China and the South. The Chinese are more active in the botanical field hence China.
Regards,
Masud.

Went roaming into the Kalla Chitta mountain range. Arid and cold, the mountains are not like the Himalayas composed of soil and sedimentary rocks but metamorphic rock formation. To give an idea of terrain:-



Now what i found and would like to be ID'd:-
1)


It was a windy day and there is some movement problem in the pics.
2)


3)






4)


5)

6)
Special for Janet. Note how the flower compels a person towards it.


7)
This is also for Janet. A brain teaser.

The trees in the background (dark green) are Pinus roxburghii but what is the subspecies with a light green colour?
I will give you a few more shots to help. Note how the new needles of the two grow plus the size of the cones.




The right trunk is of roxburghii, left NOID.

8)


9)

10)

11)

12)

13)

14)

15)

and finally this is a Encephalartos but which one?

Regards,
Masud.

With reference to NOID Acacia whose seed pod is causing all the problem. As to the thorns, maybe it is still juvenile or i should check again.

http://www.google.com.pk/imgre...
Janet please look at the seed pod on the above link.
Then the flower on this link.
http://www.google.com.pk/imgre...
Regards,
Masud.

Wow Masud, such a lot to ID! I have some ideas on a few of them, it will take some time to research though.

Regarding your links for the Acacia, that one does have thorns and I think you need very reliable sources for photos as so many are wrongly named. A google image search shows the flowers are very different to the one you found.

http://en.wikipedia.org/wiki/A...

http://www.google.co.uk/search...

#2 Salvia

All in #3 Mirabilis jalapa

http://www.pakbs.org/pjbot/PDF...

#5 I can't see enough detail

Ethnomedicinal Studies of Kala Chitta Hills of District Attock, Pakistan ..

http://scialert.net/fulltext/?...

I've found several references to medicinal plants in the region which are of no help.

The Pine appears to be Pinus roxburghii?

http://www.conifers.org/pi/Pin...

http://www.tropicos.org/Name/4...

http://www.tropicos.org/Name/4...

http://www.tropicos.org/Name/2...