Warren H. Wagner

Botrychium montanum is a species of fern in the family Ophioglossaceae known by the common names western goblin and mountain moonwort. It is native to western North America from British Columbia to northern California to Montana, where it grows in the dark understory of coniferous forests and other moist wooded areas. This very small plant grows from an underground caudex sending one thin gray-green leaf above the surface of the ground. The leaf is less than 8 centimeters tall and is divided into a sterile and a fertile part. The sterile part of the leaf has irregularly shaped angled

Doryopteris angelica is a rare fern species, known by the common name Kauai digit fern. It is endemic to Hawaii where only small populations are known. The ferns grow on slopes in Hawaiian tropical rainforests habitat, and have been found only on the island of Kauaʻi. It was federally listed as an endangered species in 2010.

Botrychium spathulatum is a species of moonwort fern native to North America.

Sceptridium rugulosum, also known as the ternate grapefern or the St. Lawrence grapefern, is a species of fern. It is an evergreen, perennial species found in the vicinity of the St. Lawrence Seaway.

Botrychium pallidum, the pale moonwort, is a species of segregate fern in the Ophioglossaceae family. It was originally described from Quebec, collected from a site near Baie-Sainte-Catherine. Prior to its discovery by Warren H. Wagner, it was only known from a herbarium record sheet at the Universite de Laval.

Botrychium crenulatum is a species of fern in the family Ophioglossaceae known by the common names scalloped moonwort and dainty moonwort. It is native to North America from British Columbia to California to Wyoming, where it is uncommon throughout most of its range, appearing incidentally at scattered spots on wet meadows in coniferous forests and marshy areas such as swamps. This is very small plant growing from an underground caudex and sending one thin, shiny, yellow-green leaf above the surface of the ground. The leaf is up to about 6 centimeters tall and is divided into a sterile and a

Botrychium campestre is a fern species in Ophioglossaceae, commonly called prairiemoonwort, prairie dunewort, Iowa moonwort, or plains grapefern. It was first discovered in 1982 and described a few years later.

Botrychium ascendens is a species of fern in the family Ophioglossaceae known by the common names triangle-lobe moonwort and upswept moonwort. It is native to North America from British Columbia to northern California as well as parts of eastern Canada. It lives in different habitat types, including grassy riverside areas. This is very small plant growing from an underground caudex and sending one yellow-green leaf above the surface of the ground. The leaf is up to 6 centimeters tall and is divided into a sterile and a fertile part. The sterile part of the leaf has fan-shaped or wedge-shaped

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Botrychium paradoxum is a species of fern in the family Ophioglossaceae known by the common name peculiar moonwort. It is native to North America, where there are scattered occurrences in Alberta, British Columbia, Saskatchewan, Montana, Oregon, Utah, Washington, and Wyoming. This plant is unique among the moonworts. While other species generally produce one fertile frond and one sterile, this species produces only the fertile frond. This frond has two segments, both bearing spores. The plant grows up to 15 centimeters (5.9 in) tall. As the leaflike sterile frond is absent, the plant likely

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Polystichum kruckebergii is a species of fern known by the common names Kruckeberg's sword fern and Kruckeberg's hollyfern. It is native to western North America from Alaska to Utah to California, where it grows in rocky mountain habitat in subalpine and alpine climates. This fern produces several narrow, erect leaves 10 to 25 centimeters long. Each leaf is made up of many oval to triangular leaflets, each no more than about 1.5 centimeters long. The leaflets overlap and are somewhat twisted in their axes. Their edges are cut or toothed, the teeth sometimes tipped with spines.

Phlegmariurus mannii, synonym Huperzia mannii, is a species of lycopod, known by the common names Mann's clubmoss and wawaeʻiole. It is endemic to Hawaii, where there are only six populations remaining. It is a federally listed endangered species of the United States. This plant is an epiphyte which grows upon other plants, especially koa (Acacia koa), ʻolapa (Cheirodendron trigynum), and kawaʻu (Ilex anomala). It has a hanging, branching, reddish stem no more than 10 centimetres (3.9 in) long. Each branch has three longitudinal rows of toothlike leaves. When reproducing, the plant produces a

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