- Home
- Angry by Choice
- Catalogue of Organisms
- Chinleana
- Doc Madhattan
- Games with Words
- Genomics, Medicine, and Pseudoscience
- History of Geology
- Moss Plants and More
- Pleiotropy
- Plektix
- RRResearch
- Skeptic Wonder
- The Culture of Chemistry
- The Curious Wavefunction
- The Phytophactor
- The View from a Microbiologist
- Variety of Life
Field of Science
-
-
RFK Jr. is not a serious person. Don't take him seriously.1 month ago in Genomics, Medicine, and Pseudoscience
-
-
-
The Site is Dead, Long Live the Site2 years ago in Catalogue of Organisms
-
The Site is Dead, Long Live the Site2 years ago in Variety of Life
-
-
What I read 20194 years ago in Angry by Choice
-
-
-
Histological Evidence of Trauma in Dicynodont Tusks5 years ago in Chinleana
-
Posted: July 21, 2018 at 03:03PM6 years ago in Field Notes
-
Why doesn't all the GTA get taken up?6 years ago in RRResearch
-
-
Harnessing innate immunity to cure HIV8 years ago in Rule of 6ix
-
-
-
-
-
-
post doc job opportunity on ribosome biochemistry!9 years ago in Protein Evolution and Other Musings
-
Blogging Microbes- Communicating Microbiology to Netizens10 years ago in Memoirs of a Defective Brain
-
Re-Blog: June Was 6th Warmest Globally10 years ago in The View from a Microbiologist
-
-
-
The Lure of the Obscure? Guest Post by Frank Stahl12 years ago in Sex, Genes & Evolution
-
-
Lab Rat Moving House13 years ago in Life of a Lab Rat
-
Goodbye FoS, thanks for all the laughs13 years ago in Disease Prone
-
-
Slideshow of NASA's Stardust-NExT Mission Comet Tempel 1 Flyby13 years ago in The Large Picture Blog
-
in The Biology Files
A plant pundit comments on plants, the foibles and fun of academic life, and other things of interest.
Friday Fabulous Flower - Spiderwort
Friday, June Oneth, and it was in the 40s this AM, so the fingers on the handle bars got really cold while riding in. But gloves? In June? And the house heat on too? This isn't Wisconsin or Maine! So May brought us record high temperatures, and temperatures so low the heat came on, just about a 40 degree F range of daily highs. May brought us a lot of June flowers pushed along by the early spring. One of the Phactor's favorite plants is now flowering, here and there throughout our gardens, spiderworts, members of the genus Tradescantia. As to species, who knows? Many seem to be hybrids with T. virginiana as a parent. Several familiar house plants (Zebrina, Rhoeo) formerly placed in different genera are now treated as species of Tradescantia. Notice the little hairs on the stamen filaments. These trichomes look like strings of snap beads (remember snap beads?), and it you have a microscope they are well worth the look both because they are pretty and because historically these are the cells in which a nucleus was observed by Robert Brown (1773-1858), and while nuclei were observed earlier by von Leeuwenhoek, it was Brown who called them the cell nucleus, and although based on a misunderstanding of how it functioned in cell biology, the term stuck. Curiously he thought that perhaps the nucleus was a feature unique to the cells of monocots. The trichome cells are also a great place to observe cytoplasmic streaming which is why species of Tradescantia are kept in our glasshouse. Lastly, for reasons unknown to the Phactor, the flower color we perceive is never the flower color recorded by either film or digital cameras. Perhaps some refraction is involved.
Subscribe to:
Post Comments (Atom)
3 comments:
Joseph Arditti claims in Fundamentals of Orchid Biology that Robert Brown observed the nucleus while examining orchid epidermis. Is there part of the story I don't know?
What a blast from the past - Joe Arditti. Maybe he's right about the nucleus and I was thinking about cytoplasmic streaming. Epidermal cells are the easiest place to see nuclei.
He's THE go-to source for scientific/anatomy information about orchids. It's not exactly leisure reading though.
Post a Comment