All the top leaves are green, but some of the lower ones are turning brown. We only water it once a week, and it gets 1-2 hours of sunlight on the stairs, with bright light the rest of the time. The potting mix is also fine, and there are no yellow leaves.

I am trying to extract flavonoids from Chrysanthemum indicum leaves and I want to remove all the colors in my solvent. Ethanol and charcoal extract flavonoid as well···

Is there a better way to remove chlorophyll and keep flavonoids at the same time?

Hello botany users,

I've been really getting into identifying flowering plants and I'm very interested in plant structures and phylogeny. I really want to get Botany: An Introduction To Plant Biology by Mauseth but even a used copy is going for over 100$ which for me is pretty expensive. Could you please recommend me some great flowering plant botany books that I can scrape together on a budget? Recommendations greatly appreciated.

I'm looking for books that contain the diagrams and specifications of certain flowering plant families and clades so I can use it as both a reference tool but also a means to learn and memorize the reproductive structures of certain flowering plants so that hopefully while I'm on my nature walks I can identify without needing a phone or book. Thanks!

Seeing as nearly every other source I’ve seen says that it does, I’m curious as to what other botanists think about the paper. My wife and I argued about it for thirty minutes! Is it semantics? Is it a misconception?

Paper for reference:

Chlorophyll does not reflect green light – how to correct a misconception

https://www.tandfonline.com/doi/full/10.1080/00219266.2020.1858930

I'd love to be more "systematic" about the way I learn systematics. Any good online syllabi from university courses or websites anyone could point me to?

I'm in Vancouver BC. So anything specific to Pacific NW plants and/or fungi is appreciated as well.

I enjoy backpacking in alpine environments, often well away from commonly visited areas. It can be difficult to find durable surfaces to pitch a tent on and rarely do I encounter already established campsites. Given the following conditions, would there be lasting negative impacts to the vegetation?

-Tent is pitched for no more than 14 hours in one location

-Vegetation consists of perennial alpine grasses, sedges, dwarf ericaceous plants (like heather or vacciniums), and/or dwarf willow

-Plants have already gone to seed and are dormant or are approaching dormancy (i.e., they've started to turn brown)

Thank you!

https://preview.redd.it/4t340et778pd1.jpg?width=596&format=pjpg&auto=webp&s=fe9eb5a3b913e2f9b8907013f616826ad29262dd

I need to create mathematical model of an artificial wetland. One of the obstacles I've encountered with this is determining the rate at which different types of water plants take up nitrates. This problem is worsened by the lack of data on this topic. Is there any data available on this topic and are there any ways of approximating the rates nitrate uptake using existing (conventional) data???

I thought I's share this open question with the group. As we know, Andinum is the only Platycerium in the New World. Its relationship with the other ferns, even after genetic analysis, is not conclusive. Some research says it is most related to Elephantosis and west Africa. Another compelling paper puts in more closely related to Quadridichotomum. In visual inspection, an claim for both can be made. In each of the genetic analyses, the researchers suggest that Andinum made it to South America by Long Distance Dispersal, either from West Africa or from East Africa/Madagascar. Since Andinum is found on the eastern slope of the Andes at elevations of 1000', it seems coming over the Pacific is harder (maybe not). I don't doubt the theory of the long distance dispersal, but if that happened, it is curious that the rain forests of South America are not full of Platycerium that came from west Africa. From a probabilistic perspective, it seems any long distance dispersal from west Africa would have resulted in many shots of spores across the Atlantic - with more making it to the closer Brazilian jungles and presumably fewer making it to the Andes, like Andinum. That, of course, is if the dispersal was via wind.

Might a bird or even insect have a travel across the Atlantic to explain it? If so, which bird or insect makes such a route?

If Andinum came over the Pacific, it would also need to have cleared the Andes. This is harder to accept. Although, if the spores were in a high elevation storm, they might have cleared the Andes and fallen as rain in the eastern Andes.

Having grown Andinum, I always wondered about it.

I'd welcome ideas, theories, and thoughts on it.

How possible would it be to do this, and how might it work?

We've had these trees in the street for my whole life and I recently looked up what they are- it looks like they're robinias, but I also learned they should be easily identifiable by their flowers. The thing is, there are 4 trees in the street and I've never seen a single one carry flowers or seeds. Is that possible? Or did I identify the trees wrong? (I know right now is not the season for either, but in 30 years I've never seen a flower or seed on any of them)

The species is Lepanthes tentaculata, this is the abaxial (lower) surface of the leaf.

Species is Pleurothallis cypripreiodes

https://preview.redd.it/9tqvquptv6od1.jpg?width=3024&format=pjpg&auto=webp&s=2c0d84bd13ded5b82b880d961b6735f5898229b3

So I water propagated these two clippings together and noticed that one of the plants roots was growing into the other. I just want to know what might be going on. The plant on the left is a pothos and the one on the right is a philodendron. Could this be a parasitic root growing from one of the plants or could it be something else. I did go ahead and plant them together in the soil like this because. I just want to see if anything interesting will happen with it.