Hello, Yes,the literature often uses the term tubercle for these type of protuberances although most definitions of tubercle specifically indicate that a tubercle is round or rounded :
A tubercle or tuberculum. n. In botany, any root of a class embracing both tuberous roots and tubercles: used specifically by Lindley. n -cle— suffix forming nouns indicating smallness: cubicle Tuberculate: An organism or part of an organism which is covered in *fleshy and raised protuberances,* also called tubercules. tubercle n. 1. (Life Sciences & Allied Applications / Botany) any small*rounded * nodule or elevation, esp on the skin, on a bone, or on a plant. *small eminence*, or* warty outgrowth* ;a* tuberlike swelling* [C16: from Latin tūberculum a little swelling, diminutive of tuber ] and since the protuberances on Ipomoea alba, Ipomoea muricata and Ipomoea parasitica are usually not truly rounded , I have usually opted to call it like it is e.g. a *soft-fleshy spine or thorn-like protuberance* because the structures in question are usually not rounded. regards, Ron . On Wednesday, March 14, 2012 1:44:35 PM UTC-4, surajit koley wrote: > > I've shared Convolvulaceae Week: Ipomoea bona-nox L. from Hooghly > (WB)<https://docs.google.com/document/d/1HojUqYd3kX4eT6ES0IgwvJRKFrs1PJ2S1WY9Y0vgsN8/edit> > - > tracked<https://docs.google.com/document/d/1HojUqYd3kX4eT6ES0IgwvJRKFrs1PJ2S1WY9Y0vgsN8/edit> > Click to open: > > - Convolvulaceae Week: Ipomoea bona-nox L. from Hooghly > (WB)<https://docs.google.com/document/d/1HojUqYd3kX4eT6ES0IgwvJRKFrs1PJ2S1WY9Y0vgsN8/edit> > - > tracked<https://docs.google.com/document/d/1HojUqYd3kX4eT6ES0IgwvJRKFrs1PJ2S1WY9Y0vgsN8/edit> > > > Sir, > > I thought my journey (as an explorer) to ‘Convolvulaceae Week’ for the > current session ended last night! But this afternoon i chanced upon another > member of this family what i think is Ipomoea bona-nox L. > > It is a big sized flower with equally big leaves. I think the ID is > correct because - > > 1) my copy of “Plant Groups” (by H. Mukherji) describes it as “a large > climber with white flowers....” > > 2) it conforms the words “giant white moonflower” & “vines and climbers” > as have been described in http://davesgarden.com/guides/pf/go/893/#b - > tracked <http://davesgarden.com/guides/pf/go/893/#b> > > 3) as i plucked a flower-bud to force open its petals i noticed secretion > of “milky juice” and “greenish midpetalline bands” as have been described > at http://www.mpbd.info/plants/ipomoea-alba.php - > tracked<http://www.mpbd.info/plants/ipomoea-alba.php> > > 4) But i may be wrong, because there is one similar post at - > https://groups.google.com/forum/?fromgroups#!searchin/indiantreepix/ipomoea$20alba/indiantreepix/0snjTZGmjSQ/7jBkq6TqMS0J > - > tracked<https://groups.google.com/forum/?fromgroups#%21searchin/indiantreepix/ipomoea$20alba/indiantreepix/0snjTZGmjSQ/7jBkq6TqMS0J> > that > suggests otherwise. > > Now, it’s before you to validate the ID. > > Species : Ipomoea bona-nox L. ??? > > Habit : herb, trailer & climber > > Habitat : wild, beside ditch > > Date : 14-March-2012, 4.50 p.m. > > Place : Kamarkundu (Hooghly), WB > > (images : 800x600) > > flower (forced open) > > flower (underside view) > > leaf and bud > > plant on the ground > > plant showing twining characteristic (but without any flower) > > Thank you & Regards, > > Surajit Koley > > Google Docs makes it easy to create, store and share online documents, > spreadsheets and presentations. > [image: Logo for Google Docs] <https://docs.google.com> - > tracked<https://docs.google.com> >
