Floristic Studies - Science topic

Hi Sailesh, I am both Beekeeper with Apis cerana colonies and also studying bee forage plants in Bhutan. I can provide you list of plants on which bees collect nectar and pollen. But now I am doing my study in southern belt of Bhutan. In central Bhutan the common nectar producing plant is Jamun, Indian Butter plant (Cheuri in Nepali) , Sorrel wood, Acacia, Golden Rod, Guava to name a few.

Please check the picture.

Жуков Б.Ф., 1971. Определитель бесцветных свободноживущих жгутиконосцев подотряда Bodonida Hollande // Биология и продуктивность пресноводных организмов. Л.: Наука, 241-284.

I like to use syringe needles you can purchase from a pharmacy as a very precise "knife" or "scalpel". I have dissected many flowers (about 1-5 mm in diameter) of Stelis (Orchidaceae) with this under a common binocular microscopes with magnifications ranging from 8x to 24x. However, sometimes it is hard to fix the flower so it can be cut. In these cases very fine forceps are helpful. Those can be purchased from goldsmiths or clockmakers. If this is still too large, the flower may be fixed on an adhesive tape or sometimes a wet paper is enough.

Distribution of species, Phenology, Pollination, seed dispersal and seedling establishment, Taxonomic revision of a family or a particular genus, Conservation of RET plants etc. are the studies in Taxonomic study.

Hello Matteo,

It would be correct to say that the centroid (mean on the linear composite of the variables forming the first discriminant root or function) for the grasslands group is further from the aggregate (all cases) centroid, or from the centroids of the other two groups. However, the display doesn't inform you as to what variable(s) are most influential in the function.

For that, you'd have to look at both: (a) standardized function coefficients, and (b) variable-function correlations (sometimes called loadings or structure coefficients). If variables are uncorrelated, then standardized function coefficients alone will let you know the relative magnitude of emphasis being placed on each variable in the function. If correlated, then you have to look also at loadings to be sure that you're not letting collinearity confounding your interpretation of relative emphasis as also indicating importance. So, the information presented isn't enough to presume that a single variable (biodiversity) is the reason for the separation in group centroids.

Good luck with your work.

Kindly download this book. This book summarizes global research on the medicinal plant Artemisia annua and its component artemisinin, an antimalarial agent.

The scope of the journal provides the answer, but I will look for details

Ana-Maria,

I consider also, as Arvind, that the definition of the plant by the leaves should not hold, and therefore do not even have to agree and determine such limited in the information photo

Good day

Thank you, Dr. Surender Singh Ji

Thank you very much for your reply Dr Nazeera Barznji 

yes, sorry jeje

There are 25 genera and 546 species.

more info here

FIV can be calculated for herbaceous plant families. The following reference will be useful to you. 

(Ref.: Mori, S.A., B.M. Boom, A.M. Carvalho and T.S. Dos Santos (1983) Southern Bahian moist forests. Bot. Rev. 49: 155-232).

FIV=Relative frequency + Relative density (f) + Relative dominance (f)  

Any relative value can be calculated by using the formula

Relative Value =

Quantitative value of a species/ Quantitative value of all the species x 100                 (Density or Frequency or Basal area)

In case of basal area method differs. In case of trees we use to measure girth/diameter. In case of herbs on average of 100 herbaceous stems diameter has to be measured by using vernier calipers to calculate basal area and them relative dominance.

@Chennakesavulu Naik Mudavath: 

Thank you very much for the paper.... its useful to me

It also happens in Fritillaria persica. And as Fernando wrote it is a mutation in the pathway of the coloring.

The yellow one is rare. But there are intermediary ones.

Dear Pedro

I did not possess a very deep knowledge about the Amazon rain forest but in general from the point of view of the biodiversity it can be stated that  the floristic homogenization  by mixing of two different bio diversity type like the (alpha) diversity and (beta) diversity is not possible because several things like the adaptability of the species, tolerance of the shade, and the loss of the rare as well endemic species etc. are make the disturbance of the species adaptation process, so, the homoginization process in the Amazon rain forest under human modification is not possible probably.  

Thank you very much for interesting and useful comments.

Best regards,

Radomir

Dear Rajasekharan,

The attached image is from Kew Herbcat site

Best wishes,

Subir.

Sir Tuan, thanks for the reply... I do feel soo...but i dont know how to confirm it?..and since being found in a well reputed farmers field..who exports his flowers....is difficult to convince him.......

The colour of the flowers is the point, why I was not sure with Asperula taurina. In the meantime I have found out that there exists Asperula taurina subsp. caucasica (= Asperula caucasica Pobed.). The protologue of this taxon (http://biodiversitylibrary.org/page/29988127 ) describes the flowers as "corolla alba raro rosea". So, it would not have been difficult to select licac flowers for horticulture.

One file more

Have a look at http://dx.doi.org/10.11646/phytotaxa.160.1.1

A catalogue of the vascular plants of the Caatinga Phytogeographical Domain: a synthesis of floristic and phytosociological surveys

and perhaps a word with Marcelo Moro...

second herbarium is may be or similar to brachychiton populneus

It depends on whether it's local flora or alien taxa. I suppose you mean unexpected plant for your area, which you don't have any idea about it.

In this case, a good starting point could be to find the genera with google images if we have some idea about the family. We can keep trying with family, flower color, leaf shape, etc. It's very possible to find some suitable genera and their distribution.

Once we have a short list of possibilities, we could search in local floras available in internet, with good and solid information.

You can find two different examples in links below:

efloras.org: with Flora of China, of Chile, of Misouri, of North America, etc.:

Muestras Neotropicales de Herbario, a visual herbarium of Neotropical countries:

Regards.

Dear Joanna

I agree with Ferruccio Maltagliati

Colin Hawes

A very interesting area to look into! Perhaps with the "sense" from the plant hormones and phytochemicals inside the parts involved.

Try the journal called Weed Science.

In Poland, the major part of work in floristic studies is based on cartogramm units. We have ATPOL grid with big squares 10x10 km and small squares 2x2 km (http://www.ib.uj.edu.pl/chronpol/geo/geo.html). For a given area, all species are counted and distributional maps are produced. Sometimes, more detailed grid is used (1x1 km, urban flora). This is standard protocol for floristic studies in Poland and the result is “Distribution Atlas of Vascular Plants in Poland”.