Not matter how much or how little rain falls in the Southwest Desert over the winter months, the cactus still flower, making for wonderful spots of sometimes-hidden color.
Prickly pear cactus, cholla cactus (including the teddy bear and staghorn), mesquite trees, palo verde, ocotillo, jojoba, yucca, and more dot the landscape. Explaining how the species capture moisture and survive desert extremes, Mr. Steele says, "There are invaders, escapers, and endurers."...
Roses come with sharp spikes or thorns. Botanists call them 'prickles'. These are small outgrowths from a plant's epidermis or the outer layer. ... Scientists believe that roses havethorns to protect them from being eaten by animals who might be attracted to them due to their sweet fragra...
摘要: Opuntia ficus-indica (prickly pear) is a widespread desert perennial cactus shrub. The plants produce either lateral branches or flowers from the axillary meristems, depending on maternal and environmental influences.DOI: 10.1080/07929978.1995.10676601 被引量: 5 ...
Opuntia ficus-indica (prickly pear) is a widespread desert perennial cactus shrub. The plants produce either lateral branches or flowers from the axillary meristems, depending on maternal and environmental influences.Yitzchak GuttermanJacob Blaustein Institute for Desert Research and Department of Life ...