Michael Howard Grayum

Spathiphyllum montanum is a flowering plant of the genus Spathiphyllum in the family Araceae. It is native to Panama and Costa Rica.

Anthurium obtusum is a species of plant in the genus Anthurium widely distributed in Central and South America, from Belize to Bolivia. The species was originally described as Anthurium trinerve by Adolf Engler and then in 1997, reclassified. The species is easily confused with Anthurium scandens, but can be distinguished by its terrestrial growth habit and a white spathe which stays erect rather than reflexed.

Peperomia ursina is a species of epiphyte or lithophyte from the genus Peperomia. It was first described by Michael Howard Grayum and published in the book "Phytologia 79(2): 112–113. 1995[1996]". It primarily grows on wet tropical biomes.

Monstera lentii is a flowering plant in the genus Monstera in the arum family, Araceae.

Monstera glaucescens is a flowering plant in genus Monstera of the arum family, Araceae.The native range of this species is Nicaragua to Colombia. It is a climber that grows primarily in wet tropical biomes.

Monstera dissecta is a species of flowering plant in the genus Monstera and family Araceae.

Monstera buseyi is a flowering plant in the family Araceae.

Peperomia trichomanoides is a species of lithophyte in the genus Peperomia. It primarily grows on wet tropical biomes. Its Conservation Status is Threatened.

Monstera molinae is a species of flowering plant in the genus Monstera in the arum family, Araceae.

Monstera filamentosa is a flowering plant in the genus Monstera and family Araceae. It is known for its highly fenestrated leaves.

Monstera costarisensis is a flowering plant in the genus Monstera and family Araceae.

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Philodendron opacum is a species of flowering plant. It has a native range extending from Southeast Nicaragua to Ecuador and includes Colombia, Costa Rica, Ecuador, Nicaragua, Panama. Its habitat is largely restricted to the Tropical Wet Forest and Premontane Wet Forest life zones in Central America, but in South America extends into Premontane Rain Forest (Colombia) and Tropical Moist Forest (Ecuador). It is sold and grown as a houseplant often under the common names Monstera sp. 'Peru' and Green Galaxy Monstera, but may also be seen listed as Monstera karstenianum or Epipremnum pinnatum

Philodendron ensifolium is a flowering plant belonging to the genus Philodendron. It was first described by Thomas Bernard Croat and Michael Howard Grayum.

Philodendron alliodorum is a species of flowering plant in the genus Philodendron. It was first described by Thomas Bernard Croat and Michael Howard Grayum.

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Philodendron squamicaule is a species of flowering plant in the family Araceae. It is native to southeastern Nicaragua, Costa Rica, Panama, Colombia, and Ecuador. A hemiepiphyte, its purplish petioles are densely scaly, with the scales fading to a brownish-red color reminiscent of dried blood.

Philodendron ichthyoderma is a species of aroid monocot found in forests in Panama, Colombia, and Ecuador.

Philodendron hooveri is a species of plant in the family Araceae. It is endemic to Ecuador. Its natural habitat is subtropical or tropical moist lowland forests. It is threatened by habitat loss.

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Philodendron guianense is a species of flowering plant in the family Araceae. It is native to the Guianas and northern Brazil. A climber, it is typically found in wet tropical forests at elevations from 5 m (16 ft) to 900 m (3,000 ft) above sea level. It is assessed as Least Concern.

Philodendron duckei is a plant species native to the French Guiana, Suriname and Brazil but cultivated as an ornamental elsewhere. Philodendron duckei is terrestrial or hemiepiphytic. Stems are purplish-brown, round in cross-section but with ribs running longitudinally along the sides. Petioles are winged, up to 7 cm long. Leaf blades are up to 21 cm long, asymmetrical with one side wider than the other, dark green on the upper side, velvety on the under side. Flowers are borne in one spathe per leaf axil. Spathes are up to 8 cm long, with a spadix up to 8 cm long.

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Philodendron brunneicaule is a species of flowering plant in the family Araceae. It is native to Costa Rica, Panama, Colombia, and Ecuador. A climber with unusual brown stems, it is typically found in the rainforest understory.

Philodendron bakeri is a plant species native to Colombia, Costa Rica, Nicaragua, and Panama.

Philodendron angustilobum, the narrow-leaved philodendron (a name it shares with Philodendron oblongum), is a species of flowering plant in the family Araceae. It is found in wet tropical parts of southern Central America and southwestern Colombia. A climbing shrub or tree, it is noted in cultivation for its well-behaved growth habit and ease of care.

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