Ruellia nudiflora (Cultivated)

Ruellia nudiflora (Engelm. & A. Gray) Urb., Symb. Antill. 7: 382 382 1912.; 

Common wild petunia, Violet Wild Petunia, Violet Ruellia, Longneck Ruellia;  

 
 
https://lh4.googleusercontent.com/-EKjcl6hpXcs/T3fiKb-L-8I/AAAAAAAAAlU/5K42pi_RlZk/s1600/Ruellia-nudiflora-tuberosa-Vikas+puri-IMG_0084-Delhi-3.jpg
https://lh4.googleusercontent.com/-HcKPqp3ChVY/T3fhh9mlIHI/AAAAAAAAAk8/KlQQXP_rgxU/s1600/Ruellia-nudiflora-tuberosa-Vikas+puri-IMG_0081-Delhi-1.jpg
https://lh4.googleusercontent.com/-H8eKt51QS_g/T3fiamAC0fI/AAAAAAAAAlg/9sOnM91yvmM/s1600/Ruellia-nudiflora-tuberosa-Vikas+puri-IMG_0091-Delhi-4.jpg
https://lh3.googleusercontent.com/-oi8mcr9Hkw8/T3fhw1iMsyI/AAAAAAAAAlI/H6IDTcgyM4o/s1600/Ruellia-nudiflora-tuberosa-Vikas+puri-IMG_0087-Delhi-2.jpg
01042012GS1 for ID: Ruellia nudiflora or Ruellia tuberosa??: Photographed Today from Vikas Puri, Delhi. Was growing outside a private house so could not dig out for possible tuberous roots.
Bracts and bracteoles are definitely shorter than calyx lobes, flowers 5-6 cm long blue-mauve; plants hardly 50 cm tall, leaves 5-8 cm long, long hairy especially on petiole and young shoots, margin somewhat undulate with prominent veins.
The plant resembles one depicted as Ruellia nudiflora at Flowers of India website. Please help in ID.

Many thanks ... for bringing up these two close species ... was not aware of Ruellia nudiflora being close to Ruellia tuberosa.
After feedback from Facebook groups, I take it as R. nudiflora

Photographed from Vikas Puri, Delhi. Was growing outside a private house so could not dig out for possible tuberous roots. Bracts and bracteoles are definitely shorter than calyx lobes, flowers 5-6 cm long blue-mauve; plants hardly 50 cm tall, leaves 5-8 cm long, long hairy especially on petiole and young shoots, margin somewhat undulate with prominent veins.
The plant resembles one depicted as Ruellia nudiflora at Flowers of India website. Please help in ID.
is that the only differentiating point?
Assuming my post Ruellia tuberosa L., which grows wild and common in Hooghly, is correctly identified as per http://keyserver.lucidcentral.org/weeds/data/03030800-0b07-490a-8d04-0605030c0f01/media/Html/Ruellia_tuberosa.htm what I find the differences between the R. tuberosa L. and R. nudiflora (Engelm. & A. Gray) Urb. are - 
(i) the capsules of R. tuberosa are more linear, narrower, longer
(ii) the sepals extend significantly above the narrower portion of the corolla tube
For the above comparison I have checked my thread and several herbarium of R. nudiflora in KEW and http://w3.biosci.utexas.edu/prc/specimens/Acanthaceae.html
My account is that this species in this thread is not R. tuberosa L.


https://08511630493324166816.googlegroups.com/attach/9b2c24edc579f/DSC_0770_1.jpg?part=0.3&view=1&vt=ANaJVrFp7VXXuENgHcpupDd4atdWqz8S6nsb1FddklgXf5ZT3bF45l-wNE-5zcRZ55P1mOSl1UL0CbJQz4NvHGNxlSGr0Xsu0cubq5GT53_2pHU08UXsAvo
 
Identification of Ruellia sp. : 13 posts by 4 authors. Attachments (4)
I will be thankful to you in identifying the attached specimen of Ruellia
It was observed at Puzhal, Chennai, Tamilnadu of 14-10-15 & 15-10-15
A herb of 45-50 cm plant with long inflorescence. Flowers arranged in compound cyme. 
Whether it could be Ruellia nudiflora 
Garden escape? it is looking close to Ruellia prostrata but, flowers are termnal. 
Please check (for Ruellia nudiflora) -
  • leaves ovate, basally attenuate
  • inflorescence terminal panicle or raceme
  • corolla length 3-4 cm
  • fruit length 1.6 - 2cm
  • number of seeds per fruit 18 or fewer

To me also it appears like images of Ruellia nudiflora 
Can you please confirm the species (R. nudiflora)? Except for attenuate leaf base (which I am not sure as per your uploaded images) I think other characters may comply with.
Is it a garden escape over there? I think it cannot be R. prostrata or even R. tuberosa.
I attach with a photo showing close up of the leaf.
I found the following description in a web site
The plants are erect, 1–2 feet tall, with few branches. The leaves are opposite, 2–5 inches long, narrowed at the base, on short stems. Gray-green leaves have curly or wavy-toothed margins. At the top of the plant are several trumpet-shaped, purplish blossoms that are nearly 2 inches across at the opening. Flowers are lavender to purple, trumpet-shaped, deeply lobed at the flared rim, and open about sunrise, falling from plant in early afternoon, lasting only one day.
As per the description my specimen suits well with Ruellia nudiflora.
I am 100% sure that it is neither R.prostrata nor R.tuberosa which I am very familiar with.
Thank you for the detail, ... I think the attached leaves cannot be called having attenuate base..
However, my view, as a non-botanist, is we can allow small degree of variation in a cultivated species; i mean to say if other characters (that i copied from the document i referred earlier) satisfy we can overlook leaf base.
This much i can say.
For me also it looks like R.nudiflora
 
https://08511630493324166816.googlegroups.com/attach/59e17395f6ebfef8/Ca-2.jpg?part=0.2&view=1&vt=ANaJVrG5QHQOakHMLKp1fab8BJtYo8OwX32Zk4ellwdKZj_hh28fkNaPJhPoiIroxusnRnzlVozwKU9p9QLZ9VRa8cmjtBJlj_3rfZyFbzTClSsKl5PsgJ8https://08511630493324166816.googlegroups.com/attach/59e17395f6ebfef8/Ca-1.jpg?part=0.1&view=1&vt=ANaJVrEVJ4VcPTrOfy3LbGT6wQn50PQI3P9lC5Z9GcSA4NKQeJvFxXKjH7ER6NocXd-RjU_VMwOv3ZGGbocVpT0TJ9wkym_Is5N2nzi7k08EuwzwiCuILwY
 
Wild Flower for ID-250509-RK1 - indiantreepix | Google Groups : 7 posts by 3 authors. Attachments (2)
Request ID for this Flower. Pic taken at Lalbagh on 240509 
Violet Wild Petunia (Ruellia nudiflora)? 
It is Ruellia brittoniana
I think it should not be Ruellia brittoniana because that is supposed to have narrow, lanceshaped leaves - see this link:
http://davesgarden.com/guides/pf/go/38178/ 




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