The various kinds differ widely from one another, B. halimifolia (Sea Purslane), the best known, attaining a height of 6 to 12 feet.
Claytonia - A small group of the Purslane order, of which three species are pretty garden plants.
Rock Purslane (Calandrinia) - Dwarf annual or perennial plants of the Purslane order.
The flora includes purslane, rock roses and several species of ferns and mosses.
Weeds are very numerous (about 125); and some, notably the sand-bur (Solanum rostratum) cockle-bur, and tumble-weeds among indigenous, and the Russian thistle (Salsola tragus) and purslane among non-indigenous species, are agricultural pests.
I have made a satisfactory dinner, satisfactory on several accounts, simply off a dish of purslane (Portulaca oleracea) which I gathered in my cornfield, boiled and salted.