Hydrocarbon Fuels Engines in the 20th Century
Transport in the twentieth century was revolutionised by the invention of engines running on hydrocarbon fuels - gasoline, diesel oil, and paraffin. The...
Most of the urban flowers illustrated here have obvious similarities. The flowers of honesty, wallflower, and shepherd's-purse are, like the cuckoo flower. There are...
One of the most popular houseplants is the weeping fig, also called Ficus benjamina”, normally just called “ficus”. Though related to the edible fig,...
The White Lily is a perpetual plant that frequently forms dense colonies. The beautiful leaves arise on flexible stalks from large, thick rhizomes. The...
The cardinal flower is a symbol of joy and happiness, attracts abundance, and repels negativity. Red cardinal flowers are extremely showy and bright. During...
Hyacinths are spring-flowering bulbs with long, narrow leaves that are folded lengthwise. Hyacinth Bulbs are highly fragrant flowers that bloom in dense clusters. So...
Begonia or Tuberhybridais a genus of perennial flowering plants in the family Begoniaceae. The genus contains 1,795 different plant species. The Begonias are native...