![]() Journal reference: Biology Letters, DOI: 10.1098/rsbl.2022. The discovery of the botanical catapult’s mechanics could lend itself to technology, Poppinga says, inspiring the design of devices like switches, locks or rain energy harvesters. “It’s remarkable that such a thing has evolved,” says Simon Poppinga at the Technical University of Darmstadt in Germany who was not involved with the study. “This is the only known carnivorous plant that uses a really fast, completely externally powered movement,” says Bauer. That dampens the diving board’s oscillations by halting it on the way up and quickly resets the trap to catch the next round of raindrops. “It’s much easier to push down than up,” says co-author Ulrike Bauer, also at the University of Bristol. The plant’s geometry constrains lid movement on the upswing so that it doesn’t lift far beyond its resting position. The jerking motion whiplashes bugs into the trap. Then, the plant releases stored elastic energy and the lid springs upwards. When rain strikes the lid, it flexes down, channelling energy through the narrow neck connecting it to the pitcher and compressing a springy region several centimetres down the body of the pitcher. “The most interesting thing was to get proven wrong,” says Lenz. However, they discovered that pitchers deformed well into their hollow bodies. Initially, the researchers expected to find the “spring” in the neck. Succupedia: Browse succulents by Scientific Name, Common Name, Genus, Family, USDA Hardiness Zone, Origin, or cacti by GenusĬlick on a photo to see a larger version.To find the elastic components behind the trap, Anne-Kristin Lenz at the University of Bristol in the UK and her colleagues used high-powered x-rays to see inside the plants as they recoiled during rainfall.Learn more at How to Grow and Care for Echeveria. To propagate a leaf cutting, place the individual leaf in potting soil for succulents and cover the dish until the new plant sprouts. Most Echeverias can be easily propagated from leaf cuttings, although a few are better from seeds or stem cuttings. Knock away the old soil from the roots, removing any rotted or dead roots. To repot a succulent, ensure the soil is dry before repotting, then gently remove the pot. Repot as needed, preferably during the warm season. Finally, as with all succulents, careful watering habits and plenty of light will help ensure success. These dead leaves provide a haven for pests, and Echeverias are susceptible to mealy bugs. ![]() Additionally, remove dead leaves from the bottom of the plant as it grows. First, be careful never to let water sit in the rosette as it can cause rot or fungal diseases that will kill the plant. Most common Echeveria species are not complicated succulents to grow, provided you follow a few basic rules. Flowers are bell-shaped, pinkish outside, yellow inside, and appear on branched inflorescences that rise well above the rosette in summer. They tend to grow about a foot high and will sometimes need to be pruned to retain their bushy form. Not all young specimens have bumps, but they will develop with time. Peperomia polybotrya, also known as Raindrop Peperomia, Coin-Leaf Peperomia or Owl Eye Peperomia, is a lovely, sturdy little houseplant that has glossy, somewhat succulent, heart-shaped leaves. The rosette grows up to 6 inches (15 cm) in diameter, usually solitary but may form a few offsets. DescriptionĮcheveria 'Rain Drops' is a small succulent that forms a rosette of spoon-shaped pale green leaves with reddish margins and a spherical blue-green bump in the middle of each leaf toward the tip developing with age. This hybrid has also been tissue-cultured. 'Rain Drops', two fairly different forms have been given new names: Echeveria 'New Heights' and Echeveria 'Heart's Delight'. Although those that are rather similar may be called E. Unfortunately, according to Jocelyn Ainsworth, Dick Wright distributed several more or less resembling seedlings from the same batch as E. This succulent is a Dick Wright hybrid, noted as the smallest of the bumpy-leafed Echeverias. Echeveria 'Raindrops' Scientific Classification
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