Section I Bryophyta (mosses)   * Bryophyta   * Broom Moss   * https://www.britannica.com/plant/moss-plant Hepaticophyta (liverworts)   * Hepaticophyta   * Marchantia   * https://www.britannica.com/plant/Marchantia Anthocerotophyta (hornworts)   * Anthocerotophyta   * Soft Hornwort   * https://www.invasive.org/browse/detail.cfm?imgnum=5562671 Lycophyta (club mosses)   * Lycophyta   * Northern Bog Clubmoss   * https://idfg.idaho.gov/species/taxa/45135 Bryophyta (mosses) are minute non-vascular non-flowering plants that form condensed green mats or clusters in shady and damp sites, and their leaves are usually unicellular and affixed to the stem. Hepaticophyta (liverworts) are land plants that are dominated by gametophytes with a unitary pair of genetic material and often grow as flattened thallus with leaves. Anthocerotophyta (hornworts) are small non-vascular plants that grow in damp soils, anchored by rhizoids on their lower surface, and propagate via either the flattened lobular gametophytes or tapered sporophytes. Lycophyta (club mosses) are seedless and flowerless terrestrial plants whose metaxylem houses the protoxylem. They also have flap-like stems, and their leaves have single veins. Psilotophyta (whisk ferns)   * Psilotophyta   * Flat Fork Fern   * https://inaturalist.nz/observations/6098280 Sphenophyta (horsetails)   * Sphenophyta   * Field Horsetail   * https://horticulture.oregonstate.edu/weed/field-horsetail Pterophyta (ferns)   * Pterophyta   * Asparagus Fern   * https://plants.ces.ncsu.edu/plants/asparagus-plumosus/ Cycadophyta (cycads)   * Cycadophyta   * Bamboo Cycad   * https://plantmaster.com/plants/eplant.php?plantnum=4804 Psilotophyta (whisk ferns) are lower vascular plants with food and water transporting tissues but lack true roots and leaves. Water and mineral diffusion transpire in rhizomes (root-like structures), and photosynthesis ensues in aerial stems. Sphenophyta (horsetails) are plants with a ring of analogous vascular bundles that hold the aerial shoot upright. Their leaves appear in whorls and sheathed at every node. Pterophyta (ferns) grow on damp rockfaces and have adventitious roots (rhizomes), where the leaves develop in the form of fiddleheads. Cycadophyta (cycads) are gymnosperms with large crowns of pinnated compound leaves and cones attached at the branch peripherals. Pollen is produced by male cones and transferred to female cones by the wind. Gnetophyta (gnetophytes)   * Gnetophyta   * Joint Pine   * https://www.britannica.com/plant/gnetophyte Ginkgophyta (Ginkgo)   * Ginkgophyta   * Maidenhair Tree   * https://www.britannica.com/plant/ginkgo-tree Gnetophyta (gnetophytes) are vascular flowering plants cascaded from the larger group of gymnosperms phyla. They also have vessels for conducting water in the secondary xylem. Gnetophytes undergo double fertilization, where a pair of sperm nuclei unites with the female gametophyte nucleus. The gamete-generating cells in gnetophytes are protected by the archegonia structures. Gnetophyta mainly comprises the woody vines or shrubs, and their leaves exist oppositely in threefold whorls. Ginkgophyta (Ginkgo) is flat and erratically notched with fan-shaped leaves which are heavily grooved at the center, forming two unique lobes. The leaves have an open dichotomous pattern where the veins diverge in pairs from the leaf’s base without cross-connection. Their cuticles have recessed pores with few stomata on the adaxial sur