Triumfetta

Triumfetta annua L. (Flower buds nearly glabrous in T.annua vs obviously hairy in T.pilosa as per keys in Flora of China)
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Triumfetta pentandra A.Rich. (Key- Stamen 5 as compared to 10 in Triumfetta rhomboidea Jacq. as per efi thread)

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Triumfetta pilosa Roth (Flower buds nearly glabrous in T.annua vs obviously hairy in T.pilosa as per keys in Flora of China)

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Triumfetta rhomboidea Jacq. (Key- Stamen 10 as compared to 5 in Triumfetta pentandra A.Rich. as per efi thread)

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Wonderful documentation as usual ! thanks for sharing …

Really nice …  species id seems correct.
let me add to the this collection with T. rotundifolia. Please add this to your collection for comparative display.

Thank you very very much …
I will add your photos of T. rotundifolia to the above species, soon.

Is this rotundifolia found commonly in SGNP ?
From the last pic, it looks like it grows in open, and appears to remain as a small herb.

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BSI Flora of India with details & keys (Volume 3- 1993) (Distribution):
Triumfetta annua L. (India: Almost throughout; Malesia to Tropical Africa) 
Triumfetta glabra Sprengel (Endemic to Sri Lanka)
Triumfetta obliqua Roth (syn. Triumfetta cana Blume) (India: Assam, Meghalaya, Nagaland and Manipur; Bangladesh, Malesia and Hongkong)
Triumretta pentandra A. Rich. (India: Almost throughout except N.E. region; Pakistan, Sri Lanka, Taiwan, Cape Verde Islands and Africa)
Triumfetta pilosa Roth (India: Almost throughout; Sri Lanka, Nepal, Bhutan, China, Malay Peninsula and Tropical Africa)
Triumfetta repens (Blume) Merr. & Rolfe (India: Occurs on sandy beaches. Andaman & Nicobar Islands(Car and Great Nocibar Islands); Thailand, Cambodia, Malesia, N.E. Australia and Madagascar)
Triumfetta rhomboidea Jacq. (India: Throughout; Pantropical)
Triumfetta rotundifolia Lam. (India: Central and Peninsular India; Myanmar)
Triumfetta tomentosa Bojer (India: West Bengal (Darjeeling), Sikkim, Assam and Meghalaya; Bangladesh, Bhutan, Sri Lanka, Mauritius, Madagascar and Africa) (? syn. of Triumfetta cana Blume as per FOC & efi thread– which in turn should be a syn. of Triumfetta obliqua Roth)

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In Flora of India Vol-3 PORTULACACEAE-
IXONANTHACEAE, edited by B.D. Sharma, M. Sanjappa & N.P. Balarkishnan (1993) account of Tliaceae is written by P. Daniel & M. Chandrabose.
In this document (Daniel & Chandrabose, 1993) published by BSI, following species of Triumfetta are described from India-
  1. Triumfetta annua L.
  2. T. obliqua Roth
  3. T. pentandra A. Rich.
  4. T. pilosa Roth
  5. T. repens (Blume) Merril & Rolfe
  6. T. rhomboidea Jacq.
  7. T. rotundifolia Lam.
  8. T. tomentosa Bojer  (? syn. of Triumfetta cana Blume as per FOC & efi thread– which in turn should be a syn. of Triumfetta obliqua Roth)
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Binomial Habit Notes Ref. Distrib.
Triumfetta
annua L.		 Herb Western Ghats
& Eastern Ghats, Dry Deciduous Forests		 Flora of Tamil
Nadu, VOL. I, 1983		 Dindigul,
Nilgiri, Salem, Tiruvanna malai
Triumfetta
pentandra
A. Rich		 Herb Plains
to Low Altitude		 Flora
of Tamil Nadu, VOL. I, 1983; Matthew, 1983		 All
districts
Triumfetta
pilosa Roth		 Herb Western
Ghats & Eastern Ghats,  Evergreen
Forests		 Flora
of Tamil Nadu, VOL. I, 1983		 Coimbatore,
Madurai, Nilgiri, Salem, Tiruchchira ppalli, Tirunelveli, Virudhu nagar
Triumfetta
rhomboidea
Jacq.		 Herb Plains,
Dry Localities		 Flora
of Tamil Nadu, VOL. I, 1983		 All
districts
Triumfetta
rotundifolia
Lam.		 Herb Plains,
Moist Localities		 Flora
of Tamil Nadu, VOL. I, 1983; Matthew, 1983		 All
districts
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Botanical name Synonyms Family Common name
Triumfetta annua Tiliaceae Orange Burr-Bush
Triumfetta pentandra Triumfetta cuneata, Triumfetta neglecta Tiliaceae Five stamen Burrbark
Triumfetta rhomboidea Tiliaceae Burr Bush
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Dr. Almeida in his ‘Flora of Maharashtra’, Vol 1 lists 5 species of Triumfetta :
1. T. pilosa
2. T. rhomboidea
3. T. pentandra
4. T. rotundifolia
5. T. annua
Am familiar with the first three.
While T.pentandra is an annual undershrub, T.rhomboidea & T.pilosa are perennial herbs.
Besides other features, Dr. Almeida differntiates the 3 mainly on the morphology of their fruit.
– T.pilosa has fruit with hispid bristles.
– T.rhomboidea has globose fruit with sharp bristles.
– T.pentandra has ovoid fruit with sharp bristles ciliate down one side.

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Flora of Guntur District, Andhra Pradesh, India (2000- Details with keys) –  
Triumfetta rhomboidea (syn. Triumfetta bartramia L. nom. illeg.)
Triumfetta rotundifolia
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Flora of Davanagere District, Karnataka, India By B. K. Manjunatha, V. Krishna, T. Pullaiah (2004- Details with keys) –
Triumfetta pilosa Roth
Triumfetta rhomboidea (syn. Triumfetta bartramia L. nom. illeg.)

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Flora of Ranga Reddi District Andhra Pradesh, India By T. Pullaiah, M. Silar Mohammed (2000- Details with keys) –
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An Excursion Flora of Central Tamilnadu, India By K. M. Matthew (1995- Details with keys) – 
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Flora of Eastern Ghats: Hill Ranges of South East India, Volume 1 By T. Pullaiah, D. Muralidhara Rao, K. Sri Ramamurthy (2002- Details) –
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Plant Wealth of the Lower Ganga Delta: An Eco-taxonomical Approach By Kumudranjan Naskar (1992)- Details-
Triumfetta rhomboidea (syn. Triumfetta bartramia L. nom. illeg.)

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Flora of Medak District, Andhra Pradesh, India By T. Pullaiah, Chintala Prabhakar, B. Ravi Prasad Rao (1998)-Details with keys –

Triumfetta rhomboidea (syn. Triumfetta bartramia L. nom. illeg.)
Triumfetta rotundifolia
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Forest Plants of Eastern India By Amal Bhusan Chaudhuri (1993)-
Triumfetta rhomboidea (syn. Triumfetta bartramia L.)
Triumfetta tomentosa Bojer (? syn. of Triumfetta cana Blume as per FOC & efi thread– which in turn should be a syn. of Triumfetta obliqua Roth)
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Triumfetta :  3 posts by 1 author.

I have updated eFI (efloraofindia) page on Triumfetta

Attempts have been made to incorporate most of the species available in India & nearby areas with details & keys directly or through links as far as possible.

Species discussed so far in efloraofindia are given at the bottom of the page in the form of links against Subpages. On clicking them one can see all the details.

If someone can provide complete list of Indian species with source references it will be wonderful.

Any comments/ corrections are welcome.

I have added list of Triumfetta spp. in India based on Flora of India Vol-3.

Thanks a lot, … I could not find any substantive details of T. obliqua Roth on net, leave alone Indian sources. Any reasons ?

Flora of India has mentioned Triumfetta cana Blume as synomym of T. obliqua Roth.  

The name T. obliqua was published by Roth in 1821 while T.cana was published by Blume in 1825. If both are same species, following nomenclatural rules earlier name should be the correct name; accordingly it was taken as T. obliqua by Flora of India. However, Plant List and other sources do not consider (probably) these two names belonging to same species, thus consider T.cana as an accepted name but T.obliqua as unresolved name. With the distribution of T.cana as mentioned in Herbarium Catalogue Kew and distribution of T. obliqua in Flora of India I feel that both the names belong to same species, but till it is resolved we may follow Flora of India

Thanks a lot, …, for the clarification.

Flora of China (with Triumfetta tomentosa Bojer & Triumfetta tomentosa var. calvescens Franch. as syn.), shows distribution of Triumfetta cana Blume in India as does Annotated Checklist of the Flowering Plants of Nepal & Tropicos | Name – Triumfetta cana Blume (Syn. Triumfetta tomentosa Bojer & Triumfetta tomentosa var. calvescens Franch. ).

Pdf of Flora of china is available at this link, published in 2007.
The Plant List ver 1.1 shows Triumfetta tomentosa var. calvescens Franch. is a synonym of Triumfetta cana Blume
In view, I think Triumfetta cana Blume is the current accepted name of Triumfetta tomentosa Bojer.
Mystery about T. obliqua still remains & you may be correct in this regard.
I request other expert also to through some light in this matter.

Further updated Triumfetta page.

Kindly add the Triumfetta tungarensis Billore which was described from Tungar hill of Thane, Maharashtra which is synonym of Triumfetta rhomoidea (Paper published by M. R. Almeida and )

Thanks, …, But all the following sites suggest Triumfetta tungarensis Billore to be a syn. of Triumfetta rhomboidea Jacq.:

Sorry, you have already suggested that.

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Triumfetta (‎‎‎‎‎‎‎‎‎Malvaceae) page with images of species in efloraofindia : 4 posts by 1 author.

Pl. go through ‎Triumfetta (‎‎‎‎‎‎‎‎‎‎Malvaceae) page with images of species (done mainly by …) in efloraofindia.

If you find any incorrect identification, pl. let us know. If anybody can send images of other species of this genera (for incorporation in the website), if any, it will be really nice.

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Pl. go through ‎Triumfetta‎ (‎‎‎Malvaceae) page with images of species in efloraofindia.

If you find any incorrect identification, pl. let us know. If anybody can send images of other species of this genera (for incorporation in the website), if any, or can identify unidentified images, it will be really nice.