This lifeform is found in the SW USA (Texas, New Mexico, and Arizona). This lifeform is found in Mexico. The yellow color will help identify this lifeform. This lifeform is found in areas of low moisture such as deserts or dry fields.

Bullet stickleaf (Mentzelia pumila) is found from Wyoming and Utah south to western Texas, New Mexico, Arizona, and southeastern California.  This plant has white stems and has larger flowers than M. albicalis.

Mentzelia genus is native to the New World.  There are about 80 species of annual and some perennial herbs and some shrubs in this genus.  These are usually erect plants with alternate lobed or pinnatifid leaves.  There are usually five petals. Some species have night-opening flowers.  There are 68 species  and 21 named subspecies growing in greater North America.

Loasa family (Loasaceae)is found primarily in the New World. There are about 250 species in this family.  Many of the plants in this family are armed with stinging or hooked hairs.  The flowers are white-yellow to reddish. There are 76 species arranged in four genera growing in greater North America, including Puerto Rico and the Virgin Islands.

Parietales Order is a large assemblage containing over thirty
different families. The violets are a well-known group in this order. The St. Johnswort family is another well known family in this order.

Dicots (Dicotyledoneae Class) are the predominant group of vascular plants on earth. With the exception of the grasses (Monocots) and the Conifers (Gymnosperms), most of the larger plants that one encounters are  Dicots. Dicots are characterized by having a seed with two outer shell coverings. Some of the more primitive Dicots are the typical hardwood trees (oaks, birches, hickories, etc). The more advanced Dicots include many of the Composite Family flowers like the  Dandelion, Aster, Thistles, and Sunflowers. Although many Monocots reach a very high degree of specialization, most botanists feel that the Dicots represent the most advanced group of plants.

Seed plants (Phylum Embryophyta) are generally grouped into one large phylum containing three major classes: the Gymnosperms, the Monocots, and the Dicots. (Some scientists separate the Gymnosperms into a separate phylum and refer to the remaining plants as flowering plants or Angiospermae.)

For North American counts of the number of species in each genus and family, the primary reference has been John T. Kartesz, author of A Synonymized Checklist of the Vascular Flora of the United States, Canada, and Greenland (1994). The geographical scope of his lists include, as part of greater North America, Hawaii, Alaska, Greenland, Puerto Rico, and the Virgin Islands.

Kartesz lists 21,757 species of vascular plants comprising the ferns, gymnosperms and flowering plants as being found in greater North America (including Alaska, Hawaii, Greenland, Puerto Rico and the Virgin Islands).

There are estimates within the scientific world that about half of the listed North American seed plants were originally native with the balance being comprised of Eurasian and tropical plants that have become established.

Plant kingdom contains a large variety of different organisms including mosses, ferns, and seed plants. Most plants manufacture their energy from sunlight and water. Identification of many species is difficult in that most individual plants have characteristics that have variables based on soil moisture, soil chemistry, and sunlight.

Because of the difficulty in learning and identifying different plant groups, specialists have emerged that study only a limited group of plants. These specialists revise the taxonomy and give us detailed descriptions and ranges of the various species.  Their results are published in technical journals and written with highly specialized words that apply to a specific group.

On the other hand, there are the nature publishers. These people and companies undertake the challenging task of trying to provide easy to use pictures and descriptions to identify those species.