Sida rhombifolia var. scabrida (Wight & Arn.) Mast. (syn: Sida scabrida Wight & Arn.);
India (widespread) as per Catalogue of Life;

Subshrubs; stem purplish, stellate hairy. Leaves 6-8 x 4 cm, rhomboid, acuminate at apex, rounded at base, coarsely serrate on upper half; petiole 8 mm long,; stipule 8 mm long, filiform. Flowers axillary; pedicels 8 mm long, slender; calyx 7 mm across, lobes triangular, acute; corolla 15 mm across. Mericarps 3 x 3 mm, awns 2, sharp, acuminate, divergent.

Flowering and fruiting: September-January
Evergreen, semi-evergreen and moist deciduous forests
Pantropical
(Attributions- Dr. N Sasidharan (Dr. B P Pal Fellow), Kerala Forest Research Institute, Peechi as per India Biodiversity Portal)

Banasura Sagar Dam  Wayanad

Date: November 15, 2019 … Altitude: about 980 m (3,200 ft) asl

Sida ¿ species ?  

Dear friends,
This does not look like cordata or cordifolia … OR may be I am wrong with my earlier collection. Please help ID, if these photos help.  

may be Sida rhombifolia?

May be you are right … I think then it must be some variety of rhombifolia.
Will check later.


yes, i am sure an ardent taxonomist will know


What about Turnera ulmifolia


No …, for certain, not Turnera ulmifolia… the flower is fan petal – Sida sp.


…, in that case, please check for Sida rawii. It is a new species described from TN, looks similar to Sida acuta, differing in a long pedicel. 

When I get on laptop, I shall be able to zoom in your images and compare with the paper. 


Here is the paper 

Sorry for wrong spelling. It is Sida ravii


…, somehow I feel, my posted plant is not Sida ravii. My plant has large flower when compared to leaves.
The herbarium shows small leaves and small flower.
I may be wrong in interpreting.
Let us wait for more comments.


Currently, I am seeing your post, …, on laptop ….and I appreciate calyx much better, with pedicel …a long one, unlike Sida acuta, petiole short, leaf rhomboid, bunching of buds at branch tip, flower really large for a sida (third image), and the plant pretty tall ..(last image)

Based on long pedicel and leaf resemblance to Sida acuta, I had suggested Sida ravii


Thanks very much … for taking time to analyse.
My mistake – I did not put approximate dimensions.
The flower size is relatively larger than those of Sida rhombifolia / Sida acuta – approx 2 to 2.5 cm across.
The height of plant is about 1.5 metre or a little higher.
Most of the leaves of posted plant are rhomboid (wider than the usual) than what is described for ravii as ovate-lanceolate / oblong-elliptic / lanceolate. The herbarium does not show any leaf “wide” as we see in our posted plant. That makes me not think of ravii.
The herbarium is not show any flower. I think there are only buds.
Nor does the illustration show flower in the branch that shows leaves and buds.
Another observation related to my plant is the crowding of leaves at the apex, almost in a whorl, which is not seen in the illustration / herbarium.
I hope I am not mistaking.


To me also looks different from Sida rhombifolia subsp. rhombifolia and other species available at Sida

I have thought and looked for possibilities in Melhania, Herissantia and Wissadula too. 

May be we are looking at something unrecorded yet, or recorded and forgotten ! 


Sida scabrida


I was mentioning this under Subspecies of Sida rhombifolia
Pl. check further.


Thanks … for the ID !!
It looks like the species is endemic to Kerala state.
And the page gives reference to Literature : Sasidharan, N. 2011. Flowering plants of Kerala. DVD, V2, KFRI.


Only one question that follows is :
Sida scabrida Wight & Arn.
OR
Sida rhombifolia var. scabrida (Wight & Arn.) Mast. as per Catalogue of Life

I think better to follow Sida rhombifolia var. scabrida (Wight & Arn.) Mast. as per Catalogue of Life and Monograph of S.India Malvaceae.

Thanks very much …; I too thought of same name.

https://www.academia.edu/28316139/A_Synopsis_of_the_genus_Sida_L._Malvaceae_from_Maharashtra_India?fbclid=IwAR2T-iscywk68QdUdVpsxK642hOTDH9BL0YRjvFhdixrKtNe1wTO3PAM9Gk  

This paper provides a very different image for Sida scabrida. … can relook into his raw images and tell us whether pedicel is jointed or non-jointed. 

Pl. also go through the Monograph. 


Please also see this 

Measurements do not match up.  

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…, I glanced through the document A_Synopsis_of_the_genus_Sida_L._Malvaceae at your given link. It gives a key that differentiates scabrida from rhombifolia. … scabrida has concolorus leaves and not jointed pedicels.

I am attaching a cropped picture – hope above characters can be made out in the cropped picture.
…, at Kerala Plants, I found almost all the measurements. Do you find any particular not matching ?
Leaves 6-8 x 4 cm, rhomboid, acuminate at apex, rounded at base, coarsely serrate on upper half; petiole 8 mm long,; stipule 8 mm long, filiform.
Flowers axillary … calyx 7 mm across, lobes triangular, acute (deduced from the buds that are seen); corolla 15 mm across.
Flowering & Fruiting: September-January
…, I was not able to find monograph.
In all, posted plant must be Sida rhombifolia var. scabrida.


Yes, sir. Pedicel is given as 8 mm, which is certainly longer looking in your photo.

Suppose pedicel in your image, …, is 8 mm then where that leaves the corolla (15 mm) and Leaf (6-8 cm X 4 cm) ? 
What I see in your images is longer pedicel, longer than petiole plus leaf more or less looking like S. acuta . . . for these two features, I had suggested S. ravii


Thanks …. The pedicel is indeed extra-long. Other aspects may be near about agreeing to the described dimensions.
The leaves, most of them are as wide as long – almost rhomboid – I do not see it as likeness of S. acuta,
I remember I found my posted plant not matching herbaria of S. ravii.
But I will not deliberate on any species, because I know less of this genus and its species in the south.
Personally, I think it is some subspecies of Sida rhombifolia.


We should leave it at Sida for now, I suggest. 



Thanks … Leaves 2-7 x 0.5-2 cm.
Above dimensions of Sida unicornis not fitting to the posted plant.


Pl. see Malvaceae of Southern Peninsular India: A Taxonomic Monograph By V. V. Sivarajan, A. K. Pradeep (1996- Details) 

Thanks … The monograph did not help my understanding much. It states subtle differences between scabrida and rhombifolia.
For now, I see it as Sida rhombifolia subsp. scabrida OR just keep it as Sida sp.


I will go with Sida rhombifolia subsp. scabrida as per Malvaceae of Southern Peninsular India: A Taxonomic Monograph By V. V. Sivarajan, A. K. Pradeep (1996- Details).

Thank you very much … for arriving to the ID.


Also matches with high resolution specimen from India at GBIF.

References:

Catalogue of Life  The Plant List Ver.1.1  IPNI
 GBIF (High resolution specimens) high resolution specimen  India Biodiversity Portal  IBIS Flora  Malvaceae of Southern Peninsular India: A Taxonomic Monograph By V. V. Sivarajan, A. K. Pradeep (1996- Details).

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