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Desmodium heterocarpon subsp. ovalifolium (Prain)H.Ohashi (S. China, Indo-China to Central Malesia: Borneo, Cambodia, China Southeast, Jawa, Laos, Malaya, Myanmar, Philippines, Sulawesi, Sumatera, Thailand, Vietnam as per POWO)

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Images by Viplav GangarSatish Phadke, Aarti S Khale & Dinesh Valke (Inserted by J.M.Garg) (For more images & complete details, click on the links) 

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Images by J.M.Garg

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Desmodium species- Ailawng, Mizoram

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There will be a sterile terminal segment on the fruits in Alysicarpus and is lacking in Desmodium. I think this demarcation will make our identification more easier than considering the the floral characters


.
Keys from Flora of Bhutan
1. Petioles broadly (up to 1 cm) winged; leaves all 1-foliate 1. D. triquetrum (syn. of Tadehagi triquetrum)
+ Petioles unwinged; leaves 3-foliate or sometimes 1-foliate ………….. .. 2
2. Inflorescence racemiform; flowers concealed by pairs of leafy orbicular persistent bracts …. 2. D. pulchellum (syn. of Phyllodium pulchellum)
+ Inflorescence umbellate, corymbose, racemose or paniculate; bracts conspicuous only in bud, ovate-lanceolate, caducous, not leafy ……. 3                           3. Stems triangular in section; inflorescence of axillary shortly stalked umbels or corymbs ………………… 3. D. triangulare (syn. of Dendrolobium triangulare)
+ Stems terete; inflorescence of racemes or panicles …………………… .. 4 
4. Leaves 1-foliate or, if 3-foliate, lateral leaflets less than half size of terminal leaflet (see also D. styracifolium); keel petals with short lateral appendages; pods dehiscing along lower suture; seeds with a cup-shaped aril …… Species 4 (D. motorium (Houttuyn) Merrill; D. gyrans (L.f.) DC., including var. roylei (Wight & Arnott) Baker, Codariocalyx motorius (Houttuyn) Ohashi) syn. of Codariocalyx motorius & 5 (D. gyroides (Link) DC.; Codariocalyx gyroides (Link) Hasskarl.) sy. of Codariocalyx gyroides
+ Leaves 1-foliate or 3-foliate but lateral leaflets more than half size of terminal leaflet; keel petals unappendaged; pods breaking up into 1-seeded segments (dehiscing along lower suture only in D. microphyllum); seeds exarillate (or bearing a rim-like aril in D. microphyllum) …… 5
5. Leaves 1-foliate …………………………………………………………………………………………….. 6
+ Leaves 3-foliate (sometimes 1-foliate in D. microphyllum and D. sryracifolium) ………. 7
6. Herbs, usually prostrate, or weak shrubs; leaves broader than long …………………….. 9. D. reniforme (synonym for Desmodium
renifolium
(L.)Schindl.
)
+ Shrubs; leaves longer than broad …. Species 6 (D. oblongum Bentham.), 7 (D. gangeticum (L.) DC.) & 8 (D. velutinum (Willdenow) DC.; D. lanfoiium DC.)
7. Flowers borne on wood of previous season …………. .. 10. D. oojeinense
+ Flowers borne on growth of current season (inflorescences sometimes on wood of previous season in D. elegans) ……………………………. .. 8
8. Leaflets 1.5 cm or less, broadly oblong, orbicular or obovate Species 11 (D. microphyllum (Thunberg) DC.; D. parvifolium DC.) & 12 (D. triflorum (L.) DC.)
+ Leaflets more than 2 cm, usually ovate or elliptic (rarely orbicular in D. styracifolium) …………………………………………………………… .. 9
9. Pods indented along lower suture only ……………………………… .. 10
+ Pods indented along both sutures ……………………………………. .. 13                                                                                                                                                10. Indentations between pod segments shallow, less than half width of pod 11
+ indentations between pod segments deep, almost reaching upper suture 12
11. Leaflets acute or acuminate …………….Species 13 (D. kulhaitense Prain), 14 (D. khasianum Prain) & 15 (D. elegans DC.; D. tilitfolium (D. Don) Wall., D. oxyphyllum sensu F.B.I. Dz)
+ Leaflets subacute, obtuse or rounded at apex ……… Species 16 (D. heterocarpon (L.) DC.; D. polycarpum (Poiret) DC.) & 17 (D. styracifolium (Osbeck) Merrill; D. retroflexum (L.) DC., D. capitarum (Burman f.) DC.)
12. Leaflets ovate or ovate-elliptic, acuminate or acute ….. .. Species 18 (D. podocarpum DC.; D. oxyphyllum DC. syn. of Hylodesmum podocarpum), 19 (D. laxum DC.; D. podocarpum DC. var. Iaxum (DC.) Baker syn. of Hylodesmum laxum), 20 (D. williamsii Ohashi) & 21 (D. duclouxii Pampanini)
+ Leaflets elliptic or obovate, obtuse or acute ………… 22. D. concinnum                                                                                                                                        13. Segments of pods +/- isodiametric ….. Species 23 (D. multiflorum DC.; D. floribundum (D. Don.) G. Don) & 24 (D. sequax Wall.; D. sinuatum (Miquel) Baker)
+ Segments of pod longer than broad …… Species 25 (D. confertum DC.), 26 (D. caudatum (Thunberg) DC.; D. laburmfolium (Poiret) DC.) & 27 (D. laxiflorum DC.)

.   

.

From Floral Database of Tamilnadu :

Binomial Habit Notes References Distribution
Desmodium
alysicarpoides
Van Meeuwen
Herb Western Ghats
& Eastern Ghats, Evergreen Forests, Grasslands
Flora of Tamil
Nadu, VOL. I, 1983
Coimbatore,
Namakkal, Nilgiri, Theni 
Desmodium barbatum (L.) Benth. subsp. sauliereri (Schind.) Ohashi Herb Western
Ghats, Evergreen Forests, Grasslands
Flora
of Tamil Nadu, VOL. I, 1983
Dindigul
Desmodium dichotomum (Willd.) DC. Herb Plains
to Low Altitude, Dry Localities
Flora
of Tamil Nadu, VOL. I, 1983
Coimbatore,
Dharmapuri, Madurai, Nilgiri, Salem,
Tiruchchirappalli, Viluppuram, Tiruvannamalai
Desmodium dolabriforme Benth.  Herb Western
Ghats, Moist Deciduous Forests, Endemic
Flora
of Tamil Nadu, VOL. I, 1983
Kanniyakumari,
Tirunelveli
Desmodium ferrugineum Wall ex Thw. subsp. ferrugineum  Shrub Western
Ghats & Eastern Ghats, Moist Deciduous Forests
Flora
of Tamil Nadu, VOL. I, 1983
Coimbatore,
Dindigul, Kanniyakumari, Nilgiri, Salem, Theni, Tirunelveli, Virudhunagar
Desmodium ferrugineum Wall ex Thw. subsp. wynaadense (Bedd. ex Gamble) Ohashi Undershrub Western
Ghats,  Evergreen Forests
Flora
of Tamil Nadu, VOL. I, 1983; Gamble, 1957
Coimbatore,
Nilgiri
Desmodium gangeticum (L.) DC.  Undershrub Plains
to Low Altitude
Flora
of Tamil Nadu, VOL. I, 1983
All
districts
Desmodium heterocarpon (L) DC. var. heterocarpon Shrub Western
Ghats & Eastern Ghats, Moist Deciduous Forests
Flora
of Tamil Nadu, VOL. I, 1983; Matthew, 1983; Gamble, 1957
Dharmapuri,
Dindigul, Nilgiri, Salem, Tirunelveli, Tiruvannamalai
Desmodium heterocarpon (L.) DC. var. strigosum Van Meeuwen Herb Western
Ghats, Moist Deciduous Forests
Flora
of Tamil Nadu, VOL. I, 1983
Nilgiri
Desmodium heterophyllum (Willd.) DC. Undershrub Western
Ghats, Evergreen Forests
Flora
of Tamil Nadu, VOL. I, 1983
Coimbatore,
Theni, Tirunelveli
Desmodium laxiflorum DC. Undershrub Plains
to Low Altitude
Flora
of Tamil Nadu, VOL. I, 1983; Matthew, 1983
Coimbatore,
Dharmapuri, Dindigul, Madurai, Nilgiri, Salem, Tiruchchirappalli
Desmodium laxum DC. (syn. of Hylodesmum laxum (DC.) H.Ohashi & R.R.Mill) Undershrub Western
Ghats,  Moist Deciduous Forests
Flora
of Tamil Nadu, VOL. I, 1983
Coimbatore,
Tirunelveli
Desmodium microphyllum (Thunb.) DC. Herb Western
Ghats, Moist Deciduous  to Evergreen
Forests, Grasslands
Flora
of Tamil Nadu, VOL. I, 1983
Coimbatore,
Dindigul, Nilgiri
Desmodium oojeinense (Roxb) Ohashi Medium
Sized Tree
Western
Ghats, Evergreen Forests
Flora
of Tamil Nadu, VOL. I, 1983
Nilgiri
Desmodium pryonii DC. Herb Western
Ghats, Dry Deciduous Forests
Flora
of Tamil Nadu, VOL. I, 1983
Coimbatore,
Dindigul, Nilgiri,  Tirunelveli,
Virudhunagar
Desmodium pulchellum (L.) Benth. (syn. of Phyllodium pulchellum (L.) Desv.) Shrub Western
Ghats & Eastern Ghats, Moist Deciduous Forests
Flora
of Tamil Nadu, VOL. I, 1983
Coimbatore,
Madurai, Nilgiri, Salem, Tirunelveli, Tiruvannamalai
Desmodium repandum (Vahl) DC. (syn. of Hylodesmum repandum (Vahl) H.Ohashi & R.R.Mill) Herb Western
Ghats & Eastern Ghats, Evergreen Forests
Flora
of Tamil Nadu, VOL. I, 1983
Coimbatore,
Dindigul, Namakkal, Nilgiri, Salem, Theni, Tirunelveli
Desmodium styracifolium (Osbeck) Merr. Shrub Western
Ghats,  Evergreen Forests
Flora
of Tamil Nadu, VOL. I, 1983; Gamble, 1957
Dindigul
Desmodium tortuosum (Sw.) DC. Herb Plains,
Naturalized, Native of Tropical America
Flora
of Tamil Nadu, VOL. I, 1983
Coimbatore,
Kancheepuram, Thanjavur, Tirunelveli
Desmodium triangulare (Retz.) Merr. (syn. of Dendrolobium triangulare (Retz.) Schindl.) Shrub Western
Ghats, Moist Deciduous Forests
Flora
of Tamil Nadu, VOL. I, 1983
Coimbatore,
Nilgiri,  Theni, Tirunelveli
Desmodium triflorum (L. ) DC.  Undershrub Plains Flora
of Tamil Nadu, VOL. I, 1983
All
districts
Desmodium triquetrum (L.) DC. (syn. of Tadehagi triquetrum (L.) H.Ohashi) Undershrub Western
Ghats, Dry Deciduous Forests
Flora
of Tamil Nadu, VOL. I, 1983
Coimbatore,
Kanniyakumari, Nilgiri, Theni, Tirunelveli
Desmodium velutinum (Willd.) DC. Undershrub Western
Ghats & Eastern Ghats, Deciduous Forests
Flora
of Tamil Nadu, VOL. I, 1983; Matthew, 1983
Coimbatore,
Dharmapuri, Dindigul, Kanniyakumari, Theni, Nilgiri, Ramanathapuram, Salem,
Viluppuram, Tirunelveli, Tiruvannamalai  

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 


.
Botanical name Synonyms Family Common name
Desmodium concinnum Desmodium barbigerum, Meibomia concinna Fabaceae Blue Desmodium
Desmodium dichotomum Desmodium diffusum Fabaceae Chikta
Desmodium elegans Fabaceae Elegant Desmodium
Desmodium gangeticum Hedysarum gangeticum Fabaceae Sal Leaved Desmodium
Desmodium heterocarpon Hedysarum heterocarpon Fabaceae Asian Tick Trefoil
Desmodium laxiflorum Fabaceae Loose Flowered Desmodium
Desmodium multiflorum Hedysarum floribundum, Desmodium nepalense, Desmodium floribundum Fabaceae Many-Flowered Desmodium
Desmodium oojeinense Dalbergia oojeinensis, Ougeinia oojeinensis, Ougeinia dalbergioides Fabaceae Sandan
Desmodium triflorum Meibomia triflora, Desmodium parvifolium, Hedysarum triflorum Fabaceae Creeping Tick Trefoil
Desmodium velutinum Hedysarum velutinum, Meibomia lasiocarpa, Desmodium latifolium Fabaceae Velvet-Leaf Desmodium

.
.

.
1997 IUCN Red List of Threatened Plants edited by Kerry Scott Walter, Harriet J. Gillett-
Desmodium wightii Wight & Arn. synonym of Desmodium pryonii DC. – Tamilnadu,
Desmodium wynaadense Gamble synonym of Desmodium ferrugineum subsp. wynaadense (Gamble) H.Ohashi– Kerala T Tamilnadu,
Desmodium travancoricum Bourd.- Kerala

.
An Excursion Flora of Central Tamilnadu, India By K. M. Matthew (1995)- Details with Keys
Desmodium repandum (Vahl) DC. synonym of Hylodesmum repandum (Vahl) H.Ohashi & R.R.Mill,

.
Forest Plants of Eastern India By Amal Bhusan Chaudhuri (1993)- Details with Keys
Desmodium caudatum (Thunb.) DC. synonym of Ohwia caudata (Thunb.) H.Ohashi ,
Desmodium dioicum (D.Don) DC. synonym of Desmodium confertum DC. ,
Desmodium tiliaefolium G.Don synonym of Desmodium elegans DC. ,
Desmodium gyroides (Roxb.) DC. synonym of Codariocalyx gyroides (Link) Hassk.,
Desmodium polycarpum (Poir.) DC. synonym of Desmodium heterocarpon (L.) DC. ,
Desmodium laburnifolium (Poir.) DC. synonym of Ohwia caudata (Thunb.) H.Ohashi,  
Desmodium motorium (Houtt.) Merr. synonym of Codariocalyx motorius (Houtt.) H.Ohashi,
Desmodium floribundum (D.Don) G.Don synonym of Desmodium multiflorum DC.,
Desmodium pseudotriquetrum DC. synonym of Tadehagi pseudotriquetrum (DC.) Y.C.Yang & P.H.Huang, Desmodium pulchellum (L.) Benth. synonym of Phyllodium pulchellum (L.) Desv.,
Desmodium sambuense (D.Don) DC. synonym of Desmodium multiflorum DC.,

.
Flora of Davanagere District, Karnataka, India  By B. K. Manjunatha, V. Krishna, T. Pullaiah (2004)- Details with Keys
Desmodium pulchellum (L.) Benth. synonym of Phyllodium pulchellum (L.) Desv.,
Desmodium triquetrum (L.) DC. synonym of Tadehagi triquetrum (L.) H.Ohashi,

.
Flora of Medak District, Andhra Pradesh, India By T. Pullaiah, Chintala Prabhakar, B. Ravi Prasad Rao (1998)- Details with Keys
Desmodium biarticulatum (L.) F.Muell. synonym of Dicerma biarticulatum (L.) DC.,
Desmodium pulchellum (L.) Benth. synonym of Phyllodium pulchellum (L.) Desv. &
Desmodium triflorum (L.) DC.  

.

I have updated eFI (efloraofindia) pages on Desmodium, Codariocalyx, Dendrolobium, Dicerma, Hylodesmum, Phyllodium & Tadehagi

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. It’s quite possible that there may be some discrepancy in the accepted names & synonyms taken from other links.

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.

Any comments/ corrections are welcome.


.

Thanks, … Why question mark?

I mean names are going to be changed ?


Ok


.
Desmodium update : 7 posts by 3 authors.
Now there is no Indian Desmodium species.
All the species have been separated into different old and new genera.
For example Desmodium laxiflorum is now Sohmaea laxiflora.

Yes …! A few more new names I guess! Grona, Huangtcia, Hylodesmum, Leptodesmia, Ototropis,
Phyllodium, Pleurolobus, Polhillides, Tadehagi and Tateishia! And only one left is Desmodium oojeinense

I guess!


Desmodium oojeinense is now Ougeinia oojeinensis


So the history of Desmodium is erased?😁

By the way CoL and Gbif still showing as the accepted name.


There are still American Desmodiums. Desmodium scorpiurus, for example, is natrualized in India.


At least one.


 

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