the
Penumbra
Plant news and the thinking behind it.
Every week: three reports, a thinker, and a plant.
Standards
Every factual claim links to its source. Where a claim comes from direct observation rather than published work, it is labeled as observation.
Corrections are posted publicly, dated, and noted on the piece itself. Nothing is quietly edited after publication.
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Columnea purpureovittata
fragmented black clay
Young example of a Anthurium PanaMama 1.0– dressleri RG x papilliaminum ‘RL’
black clay and warm light
Hardened off leaf on Carib Queen exhibiting all the best traits of the parent plants: Anthurium dressleri ‘Clone II’ and Anthurium rugulosum ‘Lago Agrio rd’.
Chlorospatha kolbii grown indoors in North Carolina
Anthurium species traded commercially as BVEP
Anthurium VIejo Enigma (Anthurium papillilaminum ‘FS’ x Anthurium crystallinum ex-Antioquia)
Anthurium ‘Black Magic’ sibling B (luxurians x dressleri).
Macleania smithiana is a Neotropical blueberry.
Anthurium regale growing indoors here in North Carolina.
Anthurium papillilaminum
Dark green, glossy, heart-shaped leaves with prominent veins, on a plant in low light.
Field work.
Securinine is a potent alkaloid from a shrub in the spurge family. A York team found the gene that makes it looks less like a plant gene than a microbial one — and that plants may be doing this far more often than anyone assumed.