Animal mesoderm forms by enterocoelic pouching, through invagination of the endoderm. The main deuterostome phyla are the Echinodermata and the Chordata. Echinoderms are exclusively marine and include starfish, sea urchins, and sea cucumbers. The chordates are dominated by the vertebrates (animals with backbones), which consist of fishes, amphibians, reptiles, birds, and mammals. The deuterostomes also include the Hemichordata (acorn worms). The Ecdysozoa are protostomes, named after their shared trait of ecdysis, growth by moulting. They include the largest animal phylum, the Arthropoda, which contains insects, spiders, crabs, and their kin. All of these have a body divided into repeating segments, typically
Phyla nodiflora look, which is why the plant is sometimes called matchweed. It is similar to the related species Phyla lanceolata, but differs in having much shorter leaves that are often blunt and much more rounded. Both species are common as weeds and in the ornamental environment. Common names in India include bukkan (Hindi), ratolia, vakkan (Marathi), podutalai (Tamil), vasir, and vasuka (Sanskrit). It is used medicinally to treat suppuration, common colds, and lithiasis. "Lippia canescens" Kunth, "Lippia incasiomalo" (Small) Tildsoan, "Lippia lickiflora" (L.) Michx., "Lippia nodiflora" var. "canescens" (Kunth) Kuntze, "Lippia nodiflora" var. "reptans" (Kunth) Kuntze, "Lippia nodiflora" var. "rosea" (D.