Lightnews — Scholar-powered news

Rhododendron Research @heyrhododendron.bsky.social · 4d

Interesting question! fine tuning of photosynthetic system to light environment and competition for space, the benefits of staying in place probs outweigh the potential benefits of moving? Seeds do get to move though, so now I’m thinking about how this relates to sporophyte/gametophyte, fun ideas!

1

Rhododendron Research @heyrhododendron.bsky.social · 14d

Wow 1001 that’s cool!
Congratulations 🎉
And 10 Rhododendrons!

Nick in NC @nicknc.bsky.social · 14d

I'm quite proud of myself:
As of the most recent post, my gardening/natural history blog now contains photos of one thousand and one distinct cultivars, hybrids or species of plants, animals or fungi. 🌱 🌴

Full index: sweetgumandpines.wordpress.com/index-of-pla...

Just a random image to accompany this post. It's a scan of a slide of an orchid I photographed in 1996 or 1997. Phalaenopsis has green petal tips fading to white at the base with patches of magenta on the lateral sepals and magenta labellum and column.

1 3

Rhododendron Research @heyrhododendron.bsky.social · 15d

This one flower bud on my Rhododendron atlanticum is…

🚨EXTRA FANCY🚨

It’s on a very tall branch that I often see on azaleas, I call them the “Superman arm” cuz they kind of punch up 😹

Anybody have a guess “why”? This bud is so different?

my guess - Superman arm has apical dominance hormones

Rhododendron atlanticum “extra fancy” bud. The bud has a cluster of flowers inside it with lots of extra green appendages on the outside. There are none of the bud scales with red tint visible, which you would see in a normal bud.

Wide shot of the “Superman arm” branch that has the strange flower buds on it. Oh, and good morning sunbeam!

Normal looking flower buds on the same rhododendron plant. The normal flower buds are distinct. They have red scales.

1

Reposted by Rhododendron Research

Marianne North @mnorth.bsky.social · 16d

Rhododendron Falconeri from the Mountains of North India https://www.wikiart.org/en/marianne-north/rhododendron-falconeri-from-the-mountains-of-north-india-1878

1 2

Reposted by Rhododendron Research

Jason Williams @jasonwilliamsny.bsky.social · 16d

Please share with anyone who cares about NSF support for graduate students and take 30 seconds to sign and leave a comment.

The deadline for the 2025 Graduate Research Fellowship Program is about one month away and literally no one can apply. #NSFGRFP

jasonjwilliamsny.github.io/grfp2025/

An Open Letter to U.S. STEM Leadership on the NSF Graduate Research Fellowship Program

jasonjwilliamsny.github.io

12 280 220

Rhododendron Research @heyrhododendron.bsky.social · 17d

Very interesting article for Rhododendron!

New Phytologist @newphyt.bsky.social · 17d

Trait‐mediated filtering of #Phytophthora pathogen invasions through global horticultural trade networks

📖https://buff.ly/3Pr9AkU
by Barwell et al.

@llewelyn68.bsky.social #PlantScience

Phytophthora risks from different source regions.

1 2

Reposted by Rhododendron Research

Vanurtle @vanurtle.bsky.social · 20d

Yoishi Nishino (Japanese, 1945) - Wild Rhododendron (n.d.)
Source: www.tumblr.com/worldsandema...

4 9

Rhododendron Research @heyrhododendron.bsky.social · 17d

Well planted Rhododendron do indeed thrive on neglect

But they do demand to be admired everyday!

Sharon H @sharonh.bsky.social · 20d

The worse you treat a rhododendron, the more it thrives.

1 1

Reposted by Rhododendron Research

Nobody Nursery @nobodynursery.bsky.social · 20d

Feel that rain? Come get some plants at Nobody Nursery today and tomorrow, 10-6

I just got back from a three day seed collecting trip on the east side of the north Cascades, and the only photo I thought to take was of this Rhododendron neoglandulosum (mountain Labrador-tea). Available next year?

Photograph of Rhododendron neoglandulosum, a cluster of white blossoms on top of a whorl of ovate leaves

1 3

Reposted by Rhododendron Research

TheSnarkyFarmer @thesnarkyfarmer.bsky.social · 18d

There are over 10,000 named varieties of azaleas, with many more hybrids and species existing, although the number in active trade is much smaller. All azaleas belong to the genus Rhododendron.
Azalea Society of America
🌱🌿👨‍🌾🌻
#TheOutpost
Learn about azaleas share.google/Ybksm2N6fkfN...

Learn about azaleas

Azaleas are in genus Rhododendron. There are evergreen and deciduous types, as species and as hybrids. This website will help you to learn about azaleas.

share.google

3 13

Reposted by Rhododendron Research

TheSnarkyFarmer @thesnarkyfarmer.bsky.social · 18d

Rhododendron varieties are approximately 1,000 species with a vast number of hybrid cultivars like 'P.J.M.', 'Nova Zembla', and 'Roseum Elegans', which offer diverse flower colors, leaf shapes, and bloom times.
#TheOutpost 🌻🌱🌿👨‍🌾
21 Different Types of Rhododendron share.google/VuWLSkXPl4Jh...

21 Stunning Rhododendron Varieties For Your Garden

Looking for some types of Rhododendrons to add to your garden this season, but aren't sure which to pick? There are many different varieties you can choose from, depending on your hardiness zone. In t...

share.google

1 3 16

Reposted by Rhododendron Research

Ellen Notbohm @ellennotbohm.bsky.social · 19d

Rainbow sunbeams on rhodies in full bloom at the height of the pandemic lockdown. A #lifewins reminder--taken in a cemetery.

No filters, no editing, no gimmicks.

#sensoryart #rainbows #smartist #onmywalk #photography #PhotographersOfBlueSky #pandemic #hope #light #rhodies #rhododendron

5 9 68

Rhododendron Research @heyrhododendron.bsky.social · 20d

Delightful autumn blooms!

Saturday Night Soup for the Soul🎵🎶 @saturdaynightsoup.bsky.social · 20d

Azalea Autumn Rouge, which blooms twice a year. This is located right off my front door.

1 4

Reposted by Rhododendron Research

Jen Golbeck @jengolbeck.bsky.social · 21d

I found this birding book along the side of the road on the Tamiami trail in the Everglades on 8/25/25. It is so well loved with sightings going back decades. If you're a birder (I am not) please spread the word and hep me find the owner so they can be reunited

10 230 370

Rhododendron Research @heyrhododendron.bsky.social · 20d

Genetic diversity was assessed for Rhododendron arboreum, a keystone tree species in the Himalaya facing threats from habitat-loss, limited regeneration, overexploitation, and climate-change.

They examined populations at nine different altitudes, finding interesting patterns of heterozygosity
🧪🍁🌿🌎🌐

Genetic diversity analysis of Rhododendron arboreum in western Himalaya indicates altitudinal population differentiation and mid-elevation enrichment of heterozygotes - The Nucleus

Genetic diversity of Rhododendron arboreum, a keystone tree species in the Himalaya facing threats from habitat-loss, limited regeneration, overexploitation, and climate-change, was assessed. We sampl...

link.springer.com

11

Rhododendron Research @heyrhododendron.bsky.social · 21d

A very interesting study about the factors shaping plant communities in Greenland, includes data on two Rhododendron species (formerly Ledum), Rhododendron groenlandicum and Rhododendron palustre
🧪🌎🌿🍁

(PDF) Drivers of plant community composition and diversity in low Arctic western Greenland

PDF | The Arctic experiences rapid climate change, but our ability to predict how this will influence plant communities is hampered by a lack of data on... | Find, read and cite all the research you n...

www.researchgate.net

2 17

Rhododendron Research @heyrhododendron.bsky.social · 22d

I hope the running title is “Isotope niches for fresh water fishes” 😍🤩

1

Rhododendron Research @heyrhododendron.bsky.social · 22d

Lots of rhododendron on Sumatra, feeling this record breaking heat wave!

Extreme Temperatures Around the World @extremetemps.bsky.social · 23d

Record heat never ends in INDONESIA:

Today the Minimum temperature at Lhokseumawe (Aceh,Sumatra) was 25.5C, its warmest September night in history.

1

Rhododendron Research @heyrhododendron.bsky.social · 24d

Fantastic Fall color is, IMHO, one of the most under appreciated aspects of Rhododendron!

With fall colors that are just as pretty as their blooms, showing off on the greenhouse today is
Rhododendron pilosum AKA Minibush

Native to Northeast US, including Pennsylvania and Ohio
#bloomscrolling

Red and green leaves of Rhododendron pilosum

Colorful rhododendron pilosum with purple, red and green leaves

5

Rhododendron Research @heyrhododendron.bsky.social · 24d

Oh Hai! I made Mr and Mrs Bacon and their little baby Eggbert

Felt food with happy faces! in the back row on the left is Mr. Bacon. He is sporting a blue tie and a slightly surprised look on his face (parenthood is surprising!) On the right is Mrs. Bacon. She has a pink bow and a very satisfied look with cute little eyelashes. In front is baby Eggbert, a yellow yolk face and cute pink cheeks, so proud and satisfied to be the child of the delightful Mr. and Mrs. Bacon.

1

Rhododendron Research @heyrhododendron.bsky.social · 24d

growth and regulatory mechanisms of Rhododendron moulmainense to high-temperature stress shows interconnected pathways of starch-sucrose metabolism and ABC transporters and may help us better understand the domestication processes of Rhododendron
🧪🌎🍁🌱

Frontiers | Growth Regulation Mechanism of Rhododendron moulmainense to high-temperature stress: Integrated physiological, transcriptomic, and metabolomic insights

Rhododendrons domestication in urban habitats is limited due to their vulnerability to higher air temperatures, and their adaptive mechanisms are poorly unde...

www.frontiersin.org

7

Reposted by Rhododendron Research

Heather Tierney 🇨🇦 🇺🇸🇺🇦🇲🇽📎 @htierney.bsky.social · Sep 9

Chornohora is the highest mountain range in the Ukrainian Carpathians located on the border of Zakarpattia and Ivano-Frankivsk regions.
It is especially beautiful at a time when the slopes of the range are covered by flowering rhododendron. Photo by: Alexander Kotenko.
#StandWithUkranie

2 17

Reposted by Rhododendron Research

Fungi First @fungifirst.bsky.social · Sep 10

Have you ever seen the rhododendron bud blast fungus Seifertia azaleae? As the name suggests this fungus is a pathogen of rhododendrons and azaleas! #Mushrooms

2 2 20

Reposted by Rhododendron Research

FeM - Funghi e Micologia @funghimicologia.bsky.social · 29d

Fungal communities driven by Rhododendron species correlate with pathogen protection against Phytophthora cinnamomi

#Fungalcommunities

link.springer.com/article/10.1...

Fungal communities driven by Rhododendron species correlate with pathogen protection against Phytophthora cinnamomi - Plant and Soil

Background and aims Plant interactions with soil microbial communities are critical for understanding plant health, improving horticultural and agricultural outcomes, and maintaining diverse natural c...

link.springer.com

1 1

Reposted by Rhododendron Research

bioRxiv Plant Bio @biorxiv-plants.bsky.social · 26d

Nectar Sugar Enhancement in Response to Bee Buzzing in Rhododendron x pulchrum: Sound-sensing Organs and Sensitivity Range https://www.biorxiv.org/content/10.1101/2025.09.09.675125v1

1 2