Non-flowering plants have been on Earth longer than plants with flowers. Here, start with mosses, liverworts, and hornworts. Then turn to ferns and fern allies and discover tried-and-true methods for identifying them. Lastly, consider several phyla of gymnosperms and their species, including the Gingko tree.

Dive into the many classification systems botanists used (and still use) to name plants. Among these are the binomial system popularized by Carl Linnaeus; the phenetic classification system, which aimed at revealing relationships based on shared characteristics; and the three ways botanists determine the ancestral traits of plants.

Professor Kleier helps you to make sense of the Angiosperm Phylogeny Group (APG), which botanists now use to classify flowering plants. You'll learn how APG came about, what it does, and why it's so important to field botanists. Then you'll explore the six guiding principles for naming a plant species.

From roots and stems to leaf hairs and fruits, learn to determine the parts of plants so you can make your own identifications in the field. What are the two main types of root systems? What are the most common leaf arrangements? What are the three different symmetry types for flowers?

Embark on your in-depth exploration of the major plant families. First, learn to recognize the difference between monocots and eudicots. Then, explore the most ancient plant family in North America and four basal angiosperms. Among the plants you'll encounter are: water lilies, magnolia trees, pawpaws, and avocado trees.

In this episode, investigate monocot plants, which grow from bulbs and tend to bloom early in the spring. You'll cover the Easter lilies of the Liliaceae family, the purple heart of the Commelinaceae family, the corpse flower of the Araceae family, and the Arecaceae (or Palmae) family with its instantly recognizable palm trees.

In The Botanist's Eye: Identifying the Plants around You, explore the most common plant families in North America, as well as some of the fascinating species within them. Along the way, learn the history of botanical science, tips and tricks botanists use to identify seemingly similar plants, and the myriad ways plants define what it means to be human.

Knowing how to name plants can help you develop a better relationship with the outdoors. In this introductory episode, get a brief overview of how life is divided and classified, walk through an example of taxonomy using a ponderosa pine tree, and consider helpful tools every good casual botanist may need.

Continue your look at monocots with an episode on four more plant families: the Orchidaceae (the second largest family of flowering plants); the Asparagaceae (which does include asparagus as well as agave plants); the Amaryllidaceae (which includes daffodils and paper whites); and the iris family, or Iridaceae.

The grasses, or Poaceae, are fairly easy to recognize, but are rather difficult to break down into individual species. There are four families you'll learn about in this episode: three which look superficially like grasses (rushes, sedges, and cattails), and the Bromeliaceae, or the pineapple family.

Now, enter the largest group of flowering plants: the eudicots, which all form a good group because they all have a similar pollen structure. Professor Kleier discusses three families (Ranunculaceae, Berberidaceae, and Papaveraceae) and also shares the floral diagrams and formulas botanists use to remember plant family characteristics.

You've already met some succulents in the Asperagaceae family, which includes agaves. Here, meet two other families that include succulents, the Crassulaceae and the Euphorbiaceae, and some other plant families that decidedly don't include succulents but are related: Saxifragaceae, Violaceae, and Salicaceae.