Mucuna

 

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An important document on all legume species growing in India is: Sanjappa, M. 1992. Legumes of India, Bishen Singh Mahendra Pal Singh, Dehradun.
As per this document following species of Mucuna occur in India-
1-Mucuna atropurpurea,
2-M.bracteata,
3-M.gigantea,
4-M.imbricata,
5-M.macrocarpa,
6-M.monosperma,
7-M.nigricans,
8-M.pruriens (var. pruriens, var. hirsuta, var. utilis),
9-M.sempervirens.
No species of Mucuna is threatened in India as Red Data Book of Indian Plants does not mention any species. 
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As per efi thread:
Key to Mucuna species as provided by J.F.Duthie in Flora of the Upper Gangetic Plains (1929) and modified as per Sanjappa (1992) :

A. Woody climbers, with faces of pods obliquely plaited

     B. Sutures of pods winged ….. Mucuna nigricans
     B’. Sutures of pods not winged ….. Mucuna atropurpurea
A’. Annuals, with valves of pods not obliquely plaited
     C. Flowers in racemes, pods densely bristly … Mucuna pruriens var. pruriens
     C’. Flowers in corymbs; pods much longer, clothed with short deciduous bristles ….. Mucuna pruriens var utilis

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Binomial Habit Notes Ref. Distrib.
Mucuna atropurpurea DC. Climber Western Ghats
& Eastern Ghats, Dry Evergreen to Dry Deciduous Forests		 Flora of Tamil
Nadu, VOL. I, 1983		 Coimbatore,
Dindigul, Kanniya kumari, Madurai, Nilgiri,
Salem, Theni,  Tirunelveli,
Virudhu nagar, Tiruvanna malai
Mucuna gigantea (Willd.) DC. Climber Plains
and Dry Evergreen to Dry Deciduous Forests 		 Flora
of Tamil Nadu, VOL. I, 1983		 Coimbatore,
Naga pattinam
Mucuna monosperma DC. ex Wight Climber Dry
Evergreen to Dry Deciduous Forests		 Flora
of Tamil Nadu, VOL. I, 1983		 Coimbatore,
Theni, Tiruchchira ppalli, Tiruvanna malai
Mucuna pruriens (L.) DC. var. hirsuta (Wight & Arn.) Wilmot –
Dear		 Climber Dry
Evergreen to Dry Deciduous Forests		 Flora
of Tamil Nadu, VOL. I, 1983		 Coimbatore,
Dindigul, Dharma puri, Nilgiri, Salem, Tiruchchira ppalli		  
Mucuna pruriens (L.) DC. var. pruriens Climber Dry
Evergreen to Dry Deciduous Forests		 Flora
of Tamil Nadu, VOL. I, 1983		 All
districts
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Botanical name Synonyms Family Common name
Mucuna monosperma Stizolobium rugosum Fabaceae Negro Bean
Mucuna pruriens Fabaceae Velvet Bean
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Forest Plants of Eastern India By Amal Bhusan Chaudhuri (1993)- Brief details with Keys-
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Flora of Davanagere District, Karnataka, India By B. K. Manjunatha, V. Krishna, T. Pullaiah (2004)- Details-
Mucuna pruriens

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The Indian Encyclopaedia: Meya-National Congress edited by Subodh Kapoor (2002)- Brief details-
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Mucuna :   1 post by 1 author.

I have updated eFI (efloraofindia) page on Mucuna

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.

I have added the list of all species of Mucuna known in India vide Sanjappa (1992)

Pl. go through Mucuna page with images of species (done by Surajit ji) in efloraofindia.

If you find any mis-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. Also, if anybody is interested to take up the activity of inserting images on efloraofindia pages from efloraofindia posts, pl. let me know.

Sir. the flower of Mucuna monosperma it looks like different. please check, i will send photo of M.monosperma. Attachments (1)

Thanks, …,  If so, then what can be this species ? Also pl. see so many threads on Mucuna monosperma showing similar flowers