Originally collected in Panama by Elaine Spear, Anthurium papillilaminum is exclusively found in (endemic to) Panama, Anthurium papillilaminum was published to science by aroid botanist Dr. Thomas B. Croat Ph.D., P.A. Schulze Curator of Botany of the Missouri Botanical Garden in St. Louis in 1986 in the Missouri Botanical Garden's Monographs in Systematic Botany.  Anthurium papillilaminum grows as a terrestrial Anthurium in soil.

Based on information published by Dr. Croat the leaves and petiole of Anthurium papillilaminum stand erect The petioles which support the leaf blades typically measure 16.5 to 34 cm (6.5 to 13.4 inches) in length and are subterete. A subterete petiole is one that is just less than round.  The subcoriacious leaves (less than leathery) are typically a dark olive green and may be tinged with red to violet red. The geniculum which is a common characteristic of Anthurium species is not easily apparent at the top of the petiole but can be felt between your fingers if you rub them across the upper petiole's surface. The geniculum allows the leaf blade to rotate in to orient itself to the brightest source of light and is sometimes tinged with a violet red.

The adaxial (upper) surface has a velutinous (velvet) blade that is velutinous without any whitish venation in the veins. As a result of the velvet appearance Anthurium papillilaminum is a member of Anthurium section Cardiolonchium.  A common characteristic of Anthurium species is the collective vein which can be observed close to the edge of the leaf blades. The collective vein of Anthurium papillilaminum begins from the first basal vein and does not completely encircle the leaf.  The cataphyll, which is the modified leaf that surrounds any newly emerging leaf dries to fibers that persist on the vine.

An aroid, all Anthurium species reproduce via the production of an inflorescence. An aroid, all Anthurium species reproduce via the production an inflorescence.  The stalk that supports the entire inflorescence is the peduncle. When an Anthurium is "in flower" the reference is to the tiny flowers containing both male and female sexual parts that grow on the spadix at the center of the inflorescence.  Unlike plants in the genus Philodendron which contain imperfect flowers having only a single sex Anthurium possess perfect flowers containing both sexes.  To help prevent self pollination nature has designed the female flowers to be receptive before the male portion of the flower produce their pollen so in most cases an insect must bring pollen from another plant.

When an Anthurium is "in flower" the reference is to the tiny flowers that grow on the spadix at the center of the inflorescence. The spathe is not a "flower" but instead is a modified leaf. The spadix at its center vaguely resembles an elongated pine cone.  Once the female portion of the flowers on the spadix are ready to reproduce during anthesis (sexual reproduction) they must be pollinated by an insect, normally a beetle.  If pollinated they will produce berries.   Each berry contains one to two seeds.  The colorful berries are then eaten by birds and other rain forest animal species that spread them among the forest in their droppings. 

The inflorescence of Anthurium papillilaminum stands erect and is held above the leaves. The spathe is green and tinged with purple red. The spathe reflexes (turns back) while the spadix is green to yellow green. Anthurium species are known to be highly variable and not every leaf of every specimen will always appear the same. This link explains in non-technical language natural variation and morphogenesis within aroid species. Morphing is very commonly seen in Anthurium species.  Click here.

Enid Offolter's photo is courtesy natural Selections Exotics,
 

Specimens may be available from Natural Selections Exotics 

or Brian's Botanicals http://www.briansbotanicals.net/

Join the International Aroid Society:  http://www.exoticrainforest.com/Join%20IAS.html

Aroid Pollination!
As it occurs in nature and by any horticulturist