Lobelia heyneana

Lobelia heyneana Schult., Syst. Veg. 5: 50 1819. (Syn: Dortmannia reinwardtiana (C.Presl) Kuntze; Dortmannia trialata (Buch.-Ham. ex D.Don) Kuntze; Lobelia aligera Haines; Lobelia arenarioides (C.Presl.) A.DC.; Lobelia bialata Merr.; Lobelia decurrens Roth [Illegitimate]; Lobelia dichotoma Miq. …….; Lobelia micrantha Hook. [Illegitimate]; Lobelia reinwardtiana (C.Presl) A.DC.; Lobelia subincisa Wall. ex A.DC.; Lobelia subincisa Wall.; Lobelia subracemosa Miq. .; Lobelia trialata Buch.-Ham. ex D.Don ….; Lobelia umbrosa Hochst. ex Hemsl.; Lobelia zeylanica var. aligera (Haines) Haines ..; Rapuntium arenarioides C.Presl.; Rapuntium reinwardtianum C.Presl; Rapuntium trialatum (Buch.-Ham. ex D.Don) C.Presl);

 

Common name: Heyne’s Lobelia

Images by Anurag N. Sharma (ID by Shrikant Ingalhalikar)

 

As per efi thread:

L. alsinoides and L. heyneana are less than 50 cm tall. with solitary axillary flowers.
The differentiating key between them is given as
—–two of the anthers penicillate at tip; seeds ellipsoid … L.heyneana.
—–All anthers penicillate at tip.; Seeds trigonous … L.alsinoides. 

 

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Diffuse herbs, stem 3-winged, glabrous. Leaves 3 x 1.5 cm, obovate, apex obtuse or acute, base narrowly winged on the petiole, crenate-serrate, nerves 4 pairs; upper leaves sessile. Flowers in terminal, short raceme; sepals 4.5 x 1 mm, lanceolate, glabrous; corolla blue, 10 mm long, ventral lobe broader; lateral and dorsal lobes lanceolate; anthers 2.5 mm long, 2 anthers with penicillate black hairs at apex; style stout, curved; stigma with a ring of hairs below. 

(From  India Biodiversity Portal

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Is this Acanthaceae member?

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… I guess Lobelia alsinoides Lam. of Family Lobeliaceae (Campanulaceae)

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Lobelia heyneana R & S.

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Could this be any Scrophulariaceae member?

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Thanks for showing the pictures.
It is difficult to tell from the above pictures which species it is. But as said by … and … this definitely appears to be either L.alsinoides or L.heyneana.
What I could gather from some searching.
Lobeliaceae …Not a very big family. Often considered as a subfamily of Campanulaceae.
Only 4 species have been mentioned from the family in BSI Mah flora. Out of these 4 are native. and 1 is cultivated: Lobelia erinus reported in gardens in Pune.
Of the 4 natives L. chinensis is a creeping herb with terete stem.
L. nicotianaefolia (Wild tobacco) is 1-3m tall.
The remaining two L. alsinoides and L. heyneana are less than 50 cm tall. with solitary axillary flowers.
The differentiating key between them is given as
—–two of the anthers penicillate at tip; seeds ellipsoid … L.heyneana.
—–All anthers penicillate at tip.; Seeds trigonous … L.alsinoides.
Hope this helps. I would like to know where the picture has been taken?
Earlier I had posted a picture from Athirampally falls Kerala which was identified by … as Lobelia alsinoides.
We have several pictures of Lobelias posted on the group by … Some were from North east India.
Attaching my pictures

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Thank you so much for the detailed identification. the plant is collected from Mudhumalai Tiger reserve, Tamil nadu.

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Could this be Lobelia alsinoides??

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Lobelia alsinoides I think this was previously known as Lobelia trigona

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identification required : 7 posts by 3 authors. Attachments (1) – 3 MB.

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Pl. check 

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collected at talakona on 10/12/2017

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I think Lobelia heyneana, nice pics…

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I think Lobelia heyneana, nice pics…

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Lobelia heyneana Schult.  ??

References:

The Plant List  Flora of China  Annotated checklist of Flowering plants of Nepal  Flowers of India  India Biodiversity Portal  IUCN Red List (LC) 

Icones Plantarum: Or Figures, with Brief Descriptive Characters …, Volume 4 By Sir William Jackson Hooker