Aeschynanthus pentatrichomatus (Gesneriaceae), a new species of lipstick vine from the Banao Protected Landscape of Luzon Island in the Philippines

Aeschynanthus pentatrichomatus sp. nov. (Gesneriaceae), a new species from
the tropical lower montane rain forests of the Banao Protected Landscape
in Luzon Island in the Philippines is described and illustrated.
Morphologically, it is most similar to A. batesii in having glabrous
vegetative parts, polysepalous calyx, and distinctly mottled internal
corolla throat and lobes. However, it differs from this species in its
smaller lamina, longer peduncle, smaller calyx lobes, whitish pink
external corolla tube, and presence of five tufts of trichomes near the
basal portion of the internal surface of the corolla tube. Aeschynanthus
pentatrichomatus differs from A. philippinensis by its externally whitish
pink, internally white corolla tube with mottled maroon markings
throughout the limb and lobes, smaller calyx lobes, and internal surface
of corolla tube with five tufts of trichomes basally. Aeschynanthus
pentatrichomatus sp. nov. is the 33rd species of lipstick vines to be
described in the Philippines. The new species is provisionally assessed as
Critically Endangered (CR) following the IUCN criteria.