Leucas lavandulifolia ?;
 
 

 

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For Id 300508JM : 6 posts by 4 authors. Attachments (1)

On 17/3/08 at Jayanti, Duars, West Bengal.


This is a species of Leucas a herb of Mint family.


I think it is Leucas aspera


I was wondering if anyone on the list knew whether Chisocheton paniculatus, Dysoxylum binectariferum (Meliaceae) and Polyalhia simiarum (Anonaceae) have bisexual flowers? So that they sexes are not separate (dioecious)? I I did read somewhere that Chisocheton has polygamous flowers-what exactly do they mean by that? Hermaphroditic?

I have also been told that these are mid to late successional species that are shade intolerant (except for Chisocheton). Any information on this including seed dormancy, persistence of seedlings and juveniles, height of seedlings, etc. would be very welcome.


I think the following extracts from Wikipedia link, may clarify your doubts (you can click the link for more details): http://en.wikipedia.org/wiki/Plant_sexuality

Individual reproductive unit (a flower in angiosperms)

  • Bisexual – or perfect flowers have both male (androecium) and female (gynoecium) reproductive parts, including stamens, carpels, and an ovary. Flowers that contain both androecium and gynoecium are called androgynous or hermaphroditic. Examples of plants with perfect or bisexual flowers include the lily, rose, and most plants with large showy flowers, though a perfect flower does not have to have petals or sepals. Other terms widely used are hermaphrodite, monoclinous, and synoecious. A complete flower is a perfect flower with petals and sepals.
  • Unisexual – Reproductive structure that is either functionally male or functionally female. In angiosperms this condition is also called diclinous, imperfect or incomplete.

Plant population

  • Hermaphrodite – only hermaphrodite plants with flowers that have both male and female parts.
  • Monoecious – only monoecious plants, that is plants have separate male and female flowers on the same plant. A plant species where the male and female organs are found in different flowers on the same plant, often plants are wind pollinated like some trees and grasses like corn.
  • Dioecious – only dioecious plants, all plants are either female or male.

  • This one will fall under the first part of my comment – “To me, except for two or three threads where pictures are not at all clear to identify the species, ……”

    It has very probably not L. aspera (Willd.) Link.
    Better pictures are needed to reach species level ID.


     

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    /wp-content/uploads/2020/10/Thumpa%20puva.jpg

     

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    Enclosed is a picture of a very special flowers for the keralites – malayalam name is : thumba puvu.
    For the onam flower decorations this flower is very important.
    Do not know what the botanical name is though.


    It is Leucas aspera.
    This has a medicinal properties and used in traditional medicine. Also I have heard the plant by the bedside wards off mosquitoes , though I haven’t tried it out !!!!


    Useful links on Traditional Medicinal Uses of Leucas
    http://www.google.com/search?hl=en&rls=ig&q=leucas+oudhia&btnG=Search
    http://ecoport.org/ep?SearchType=earticleList&Author=oudhia&Text=Gumma

    Cross-references
    http://ecoport.org/ep?SearchType=reference&Author=oudhia&Title=weed&TitleWild=CO&MaxList=0&AuthorWild=CO


    Thanks for the latin name … I have this growing in my garden. Got the seeds here in Kolkata where I have seen it growing wild. Sometimes the flowers are in bloom simultaneously all round the stem like some fancy lighting around a pillar. Typical Labiaceae flowers. The Malyalam name Thumba connects with the India’s 1st rocket launching pad at Thumba. Was it growing wild there earlier before construction started there?


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    ID pls – nectar plant found road side at Saltlake – kolkata: ID pls – nectar plant found road side at Saltlake – kolkata


    This is some species of Leucas from Lamiaceae


    Leucas aspera. Flowers used for worshiping God Shiva in South India. A common weed.


    Forwarding again for Id confirmation as Leucas aspera or otherwise please in view of observations in other thread as

    “To me, except for two or three threads where pictures are not at all clear to identify the species, none of the threads accepted as L. aspera is L. aspera (Willd.) Link, no matter who identified those threads.


    This one will fall under the first part of my comment – “To me, except for two or three threads where pictures are not at all clear to identify the species, ……”

    It is impossible for me to reach any specific id.


     

     

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    SYMBIOSIS :707 : 1 post by 1 author. Attachments (1).
    Attaching an image of a Mottled Emigrant butterfly on the flowers of Leucas aspera.


    I think it’s not Leucas aspera as pointed out recently by … in your other threads.


    … must be correct. I may be wrong calling the species Leucas aspera.


    I may be correct, never claim I must be correct. We haven’t reached to any conclusion yet.


     

     

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    SYMBIOSIS : 708 : 1 post by 1 author. Attachments (1)
    Attaching an image of a Lime Butterfly on the flowers of Leucas aspera.


    I think it’s not Leucas aspera as pointed out recently by … in your other threads.

     
     

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