Orchidaceae - Science topic

Mohammad Mahmoodi Farshid Memariani Urgamal Magsar Dmitar Lakusic Richard Lorenz Ripu M. Kunwar Johan David Wallens & János György Nagy

The above plant is Dactylorhiza incarnata subsp. cilicica (Klinge) H.Sund.

The name Dactylorhiza umbrosa is a synonym of Dactylorhiza incarnata subsp. cilicica

The name Dactylorhiza umbrosa var. ochroleuca is a synonym of Dactylorhiza incarnata subsp. cilicica

Thanks!

Yes I will interviewe it

You can treat the seeds with hydrogen peroxide (20%). However, for the germination of Orchid seeds, fungal spores are needed, with which the plant is in symbiosis. Consequently, any sterilization can kill the spores of the fungus and seed germination will become impossible. I think it would will better if you put the seeds in the substrate in which the mother plant grows Habenaria dentata.

Arvind Kumar GOYAL

It looks Paphiopedilum spicerianum (Rchb.f.) Pfitzer

Thanks!

Better to write Pulsatilla grandis in the question

Hi Lukas,

take this one for the Aroids:

For

Nice! Good question....yea..if we know techniques of your experimental, I may tell my students to repeat the same,,, regards!

Hello Maria V. Kozlova . Thanks for the reply. Precisely because of the variety of methods I am in doubt. I work with arbuscular mycorrhizal fungi in the Brazilian savannah region. And there are few studies with orchid fungi in this biome. I want to study this area. Initially I would like to make a survey of local biodiversity and ecological interactions with the native orchids of the cerrado.

@ Dr. Carlos Fabregat

Please also go through the following links.

Thanks!

SOC media

Subir Bandyopadhyay even sometimes when a molecular study is done giving the same result for two specimens we have cases for a lot of differences in morphology. And I mean a loooooot

Germination and seedling establishment in orchids: a ...

https://academic.oup.com/aob/article/116/3/391/169761

Following........

Yes, pollinium looks rather different under a microscope than pollen, so it is easy to recognize in a honey by melissopalynology. But in the honeys I am studying until now, I exceptionnally see pollinium. You can make a reference slide of this species, or if necessary, with samples of the pollinium, I can prepare you a reference slide.

Hello Peter H Roos,

Thank you for for sharing interest paper about plant-insecte relation.

I like also Angraecum générale from Madagascar...

Best regards,

Marpha TT

Dear Honar,

Please have a look at these PDF attachments.

Good luck!

Hello

The PLBs treated with VW medium containing 20% tomato extract did not turn brown during the culture period, and well-developed and healthy PLBs with improved proliferation rates could be harvested

after 12 weeks of culture

Agree with @ Ali Mahmoudpour

Salep orchids are geophytes. You search AEGEAN AGRICULTURAL RESEARCH INSTITUTE's salep orchids researches.

It is gratifying to know that you are working on native species little known in our country and I am pleasantly surprised that there are specialists like Dr. Luer who works in these orchids in the neotropic. Right now there is a monograph in progress. We can not discount the possibility of discovering new species. If there are subtle differences between these two species you could use molecular tools, such as there are cryptic species that could be solved through this tool and have more information to solve this issue.

good luck

Thank you very much Alfredo! Thats something happening quite often in orchids - do you jnow why the misidentification as a new species in this very case ? Its because of the color?

Thank you very much !

Danrev:

This link could offer you important insights:

Best

Syed

None of the photos are of species. These are ALL hybrids, and the names, unfortunately, are extremely difficult to establish if you do not know the sources, since there are thousands of Phalaenopsis hybrids. By the way, Doritis is now considered Phalaenopsis, not a separate genus, although its growth habits are rather different. Most Dtps. (Doritanopsis) hybrids are probably not Doritis based.

See on the cite "Suisse fondation"

and with synonyme : Neobartlettia lobulata Mansf.

WATERING:

Spathoglottis require good drainage in the media, so after a thorough watering allow the media to dry on top but you do not want the container to dry out altogether. Do not allow to sit in water.

Water thoroughly in the morning once to twice weekly depending on your cultural conditions (light, temperature, humidity, air movement, etc.) allowing the top of the media to dry slightly between waterings. If the potting media is top-dressed with expanded slate, the area next to the pseudobulbs will dry out nice and quickly.

FERTILIZING:

Spathoglottis like fairly high feedings of fertilizer @ 200 - 300 ppm N every watering. Outdoors, a slow release fertilizer such as Palm 12-4-12, or Nutricote or Osmocote with full micros can be used in the 4 - 6 month release formulations. Apply according to the bag’s suggestions for herbaceous ornamental plants.

TEMPERATURE:

Spathoglottis are generally “warm” growing plants liking temperatures up to the high 80̊s F (30̊C) and they can tolerate temperatures down into the upper 50̊s F (15̊C). Keep in mind – the more air movement, the warmer the plants can be and the higher light levels they will accept without turning yellow; and if it is too cold, the pot stays too wet and the growth will suffer.

Foliage may burn below 50° F (14°C) - containers can be protected by moving or covering; landscape plants can be covered with light weight frost blankets. New growth will replace the old burned foliage if frost damages the plants, but protect from freezing.

POTTING MEDIA:

The plants are very forgiving as to the potting media. We use a media based on 75% high quality soilless mix used for hanging baskets and larger containers mixed with 25% our orchid potting media which incorporates expanded slate. Outdoor landscaping media can incorporate more orchid media for drainage - New Zealand Pinus radiata bark, perlite, sphagnum moss, and various other components.

The mix is very free draining but holds more moisture than regular media for epiphytic orchids. I plant allowing the topmost roots coming out of the pseudobulbs to be exposed and then top-dress with a couple of layers of straight expanded slate so that the area immediately around the pseudobulbs remains on the dry side. Do not bury the pseudobulbs. Potting containers can be in the 2 - 4 gallon size (8” - 12” diameter).

Dear Alexander,

The answer is NO.

See the two articles from ICN pasted below:

• 40.4 For the purpose of Art. 40, the type of a name of a new species or infraspecific taxon (fossils excepted: see Art. 8.5) may be an illustration prior to 1 January 2007; on or after that date, the type must be a specimen (except as provided in Art. 40.5).

• 40.5 For the purpose of Art. 40, the type of a name of a new species or infraspecific taxon of microscopic algae or microfungi (fossils excepted: see Art. 8.5) may be an effectively published illustration if there are technical difficulties of preservation or if it is impossible to preserve a specimen that would show the features attributed to the taxon by the author of the name.

With best wishes,

Subir.

No doubt It is....Crepidium species. Species level Id must have flowering. Plz check local floras.

You may try but my suggestion is try simplified medium with low nitrates.

Like which ones?

i am famous between the botanists in Lebanon as the man of orchids and i have four new world records. Try to call me when you come i will help you . you need to tell me which kind you want and i will tell you every thing about it. Stefano. Are you an expert in orchids , because i have a new species of coriophora

i am studying it for years and i have the insects that fill it

It is known that bees leave olfactory footprints on the flowers, which indicate that the flowers just have been visited. The bees oviously learn the association between the nectar refilling duration and the strength or compostion of the footprints and avoid to land on flowers that have been visited recently. . See the publications of Thomas Eltz and coworkers:

Wilms, J. & Eltz, T., 2008. Foraging scent marks of bumblebees: footprint cues rather than pheromone signals. Naturwissenschaften 95: 149-153.

Witjes, S. & Eltz, T., 2007. Influence of scent deposits on flower choice: experiments in an artificial flower array with bumblebees. Apidologie 38: 12-18.

Eltz T., 2006. Tracing pollinator footprints on natural flowers. Journal of Chemical Ecology 32: 907-915

Dear Durgesh,

Dr. Achankunju is correct. Type of genus Crepidium is C. rheedei Blume. In protologue (Bijdr. Fl. Ned. Ind. 8: 387. 1825) Blume described genus first and then species. The type locality is Java (grows in shady forests on Java island). Blume type specimens are held at L, some at BO, U and P. Blume described many species based on his own collections from Java. One isotype of C. rheedei is at BM (BM000082914). But At present from online record no type specimens of this species are extant at L, BO, U and P (better to check by contacting the curators of these herbaria). So, at present only one specimens collected by Blume is extant at BM, which is therefore the obligatory holotype. 

Thank you very much for interesting and useful comments.

Best regards,

Radomir

You can view the holotype here:

Dear Rodrigo,

thank you very much for suggestion. you are right, there are some very interesting papers on Lepanthes in the profile of Dr. Raymond Tremblay.

Best regards,

Radomir

The major difference of these two taxa has to do with the color of the basal area. IN O. grammica the color is always olive-green.

Hello, presumably you would find a key for identification in C. A. Luer (1996): "Icones Pleurothallidinarum XIII. Systematics of Restrepia (Orchidaceae). (= Monographs in Systematic Botany from the Missouri Botanical Garden 59). At least, that's what a review bei K. Barringer (in Journal of the Torrey Botanical Society 124:336) suggests: "Keys for identifications are included". (I've seen the review but not Luer's monograph.)

For me both suggestion are suitable, from Machado Neto and Sarkar. You may try handle it, train your self. After a couple experiments you may reach suitable. procedures.

Bears some resemblance to Epidendrum gastropodium Reich. f. of Colombia-Ecuador

Oh, you mean you cannot identify the individual that you have used, to species level? That still does not mean you have the DNA of the "genus". A genus does not exist. In the best case you may have a phylogenetic analysis (based on molecules OR on morphology) that indicates a clade of related species. But even then, there is no objective criterium to decide at which node to put the 'frontier" for a 'genus" (or a for any of the Linnean categories). This is entirely arbitrary - depending on if you are a "lumper" or a "splitter":) and depending on the "traditions" commonly used in the (animal) group you are working with. Hence, biodiversity or ecological studies based on (number) of genera of families are extremely biased. (See my 2008 paper on Global diversity of free living flatworms (Platyhelminthes, “Turbellaria”) in freshwater and some references there in).

Agus, here are our past journal articles about orchids (including Dendrobium) used in traditional medicine.

For this area of ethnobotany, it is better to refer to books.

There are great coverage of this area by Prof Joseph Arditti in his excellent book "Fundamentals of orchid biology", or his review series (Orchid biology: Reviews and Perspectives":

Good luck to your research. John (Singapore)

The dependence on fungi for germination is varibale in different plant species: for instance, epiphytic orchids can germinate and develop without fungi (but in the presence of exogenous C). In general, the presence of the fungus is required in the first stages post-germination because of the very few reserves stored in the orchid seeds (which are very small).

In 1888 Wakker called those bodies as elaiosomes. I suppose elaisomes could, have a light dispersing function in Vanilla, and in some shadow-adapted species like Vanilla trigonocarpa, elaiosomes became very dark when the plant is exposed to high light intensities.

Hi, Paromnik, how did you get plantlets form explants? Have you intiated non-prganize growth? Generally, you have a quite stable conditions during plantlets generation with out any stresses. Moreover, tissue undergo regeneration have a high reparation ability and hioghly belenced ROS öevel (very low ROS). If you will induced un-organized growth and then get plan regeneratiion form callus, you will have high degree of variation.

Variability is possible in cross pollinated species, but what if both parents are genetically not distinctive from each other, like crossing between clonal plants which are very similar to each other?

The technique you are using to check the fidelity for example the markers and the location where they flank in genomic DNA, you are using are efficient enough to bring out the variations?

Plant Growth Regulators (if this what your abbreviation stands for) in tissue culture may not change the genetic make up of the plant and it causes only physiological and morphological changes.

Coconut water from young and green coconuts!

Here is a useful system simulating natural sunlight.

Can you please send me reprint?

Check this out: "THE REPRODUCTIVE SYSTEM AND GERMINATION IN ORCHIDS"

***Corrected Link***

There is no listing for this species in Tropicos. There is a Coelogyne corymbosa but it is unlikely that it would be confused with a Dendrobium.

I agree with Dr. Tremblay and Dr. Higgins. The high floral variability (that seems contingent to the family) and the frequent occurrence of natural hybrids (in some cases, intergeneric hybrids) make difficult to establish “natural entities” in Orchidaceae at any taxonomic level. Thus, the typological approach seems inappropriate. I think that given the diversity of orchids we should consider how feasible is to apply a more integrative approach (as proposed by Dr. Tremblay). For instance, increasing hybridization events detected in orchids call into question molecular phylogenetic trees. Genetic flux between species is probably a key process in diversification of orchids. In the case of species or genera that originated by hybridization, phylogenetic methods sometimes yield wrong evolutionary relationships which ultimately leads to new taxonomic classifications. In addition, results depend on whether researchers use genetic markers of maternal or biparental heredity. However, I personally think that trying to establish categories above the species level is useful, because it provides a framework to subsequent studies from different fields in order to achieve a definite classification system.

According to the World Checklist of Selected Plant Families as of 01/01/2011 there were 26,567accepted orchid species.