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 Photo# 11614 Specimen# R0 Costus scaber aff. thin stemmed form on trail near Rancho Quemado, Osa Peninsula, Costa Rica More of the thin stemmed form |
 Photo# 11615 Specimen# R0 Costus scaber aff. thin stemmed form on trail near Rancho Quemado, Osa Peninsula, Costa Rica Acuminate leaf apex |
 Photo# 11616 Specimen# R0 Costus scaber aff. thin stemmed form on trail near Rancho Quemado, Osa Peninsula, Costa Rica Long lobed ligules |
 Photo# 11617 Specimen# R0 Costus scaber aff. thin stemmed form on trail near Rancho Quemado, Osa Peninsula, Costa Rica Acuminate leaf apex |
 Photo# 11618 Specimen# R0 Costus scaber aff. thin stemmed form on trail near Rancho Quemado, Osa Peninsula, Costa Rica |
 Photo# 11619 Specimen# R0 Costus scaber aff. thin stemmed form on trail near Rancho Quemado, Osa Peninsula, Costa Rica |
 Photo# 11620 Specimen# R0 Costus scaber aff. thin stemmed form on trail near Rancho Quemado, Osa Peninsula, Costa Rica |
 Photo# 12473 Specimen# R0 Costus scaber at Cerro Cangreja, Costa Rica small red bracted Costus from trail above Cerro Nara lodge |
 Photo# 12474 Specimen# R0 Costus scaber at Cerro Cangreja, Costa Rica small red bracted Costus from trail above Cerro Nara lodge |
 Photo# 12475 Specimen# R0 Costus scaber at Cerro Cangreja, Costa Rica small red bracted Costus from trail above Cerro Nara lodge |
 Photo# 11621 Specimen# R0 Costus scaber aff. thin stemmed form from collections on Osa Peninsula, Costa Rica Comparison of Rio Barrigones lowlands plant with Ranch Quemado area higher altitude, thin stemmed plants - both believed to be |
 Photo# 11624 Specimen# R0 Costus scaber aff. thin stemmed form on trail near Drake, Osa Peninsula, Costa Rica Short plant, thin stems |
 Photo# 11625 Specimen# R0 Costus scaber aff. thin stemmed form on trail near Drake, Osa Peninsula, Costa Rica Note long lobed ligules, thin stems |
 Photo# 11626 Specimen# R0 Costus scaber aff. thin stemmed form on trail near Drake, Osa Peninsula, Costa Rica Acuminate apex |
 Photo# 11627 Specimen# R0 Costus scaber aff. thin stemmed form on trail near Drake, Osa Peninsula, Costa Rica |
 Photo# 11628 Specimen# R0 Costus scaber aff. thin stemmed form on trail near Drake, Osa Peninsula, Costa Rica Very thin, twisting stems |
 Photo# 11629 Specimen# R0 Costus scaber aff. thin stemmed form on trail near Drake, Osa Peninsula, Costa Rica On the same trail |
 Photo# 11636 Specimen# R0 Costus scaber on trail near La Gamba Biological Research Station, Costa Rica short plant (not in bloom), acuminate apex, possibly is thin stemmed form. |
 Photo# 16995 Specimen# R0 Costus aff. scaber, Costa Rica, Osa Peninsula, Cerro Brujo trail near Rancho Quemado |
 Photo# 16996 Specimen# R0 Costus aff. scaber, Costa Rica, Osa Peninsula, Cerro Brujo trail near Rancho Quemado |
 Photo# 16997 Specimen# R0 Costus aff. scaber, Costa Rica, Osa Peninsula, Cerro Brujo trail near Rancho Quemado |
 Photo# 16998 Specimen# R0 Costus aff. scaber, comparison of lowland form with thin stemmed highland form |
 Photo# 16999 Specimen# R0 Costus aff. scaber, Costa Rica, Osa Peninsula, trail along road to Drake |
 Photo# 17000 Specimen# R0 Costus aff. scaber, Costa Rica, Osa Peninsula, trail along road to Drake |
 Photo# 17001 Specimen# R0 Costus aff. scaber, Costa Rica, Osa Peninsula, trail along road to Drake |
 Photo# 17002 Specimen# R0 Costus aff. scaber, Costa Rica, Fila Trail, La Gamba |
 Photo# 17003 Specimen# R0 Costus aff. scaber, Costa Rica, Fila Trail, La Gamba |
 Photo# 17004 Specimen# R0 Costus aff. scaber, Costa Rica, Osa Peninsula, Los Planes area |
 Photo# 17005 Specimen# R0 Costus aff. scaber, Costa Rica, Osa Peninsula, Los Planes area |
 Photo# 17006 Specimen# R0 Costus aff. scaber, Costa Rica, Osa Peninsula, Los Planes area |
 Photo# 17007 Specimen# R0 Costus aff. scaber, Costa Rica, Osa Peninsula, Los Planes area |
 Photo# 17008 Specimen# R0 Costus aff. scaber, Costa Rica, Osa Peninsula, Los Planes area |
 Photo# 17009 Specimen# R0 Costus aff. scaber, Costa Rica, Osa Peninsula, Los Planes area |
 Photo# 17010 Specimen# R0 Costus aff. scaber, Costa Rica, Osa Peninsula, Los Planes area |
 Photo# 17011 Specimen# R0 Costus aff. scaber, Costa Rica, Osa Peninsula, Los Planes area |
 Photo# 17012 Specimen# R0 Costus aff. scaber, Costa Rica, Osa Peninsula, Los Planes area |
 Photo# 17013 Specimen# R0 Costus aff. scaber, Costa Rica, Osa Peninsula, Los Planes area |
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PLANT FAMILY: Costaceae BOTANICAL NAME: Costus scaber Osa thin stem form FORMAL SCIENTIFIC NAME: STATUS : CONTINENT: Neotropical SYNONYMS: BOTANICAL NOTES: This page is for photos of a thin stemmed form of Costus scaber that I have seen on the Osa Peninsula of Costa Rica. The main webpage for the species Costus scaber is at PID 3607 During trips to Costa Rica I have seen a plant several places that I believe to be yet another form of Costus scaber or an undescribed new species. It is usually found on ridges along trails and is vegetatively distinctive by having very thin stems and a tight spiraling form, much shorter than other forms I have seen of C. scaber, usually 1 meter tall or less. The ligules are long and deeply lobed and the petioles are long and often twisted. The apex to the leaves are very long acuminate and twisted somewhat like Costus wilsonii. The inflorescences are red and somewhat more fusiform (pointed apex) than the normal Costus scaber forms I have seen. I have not seen enough of the flowers to clearly describe them, but they are generally consistent with C. scaber. In my 2013 trip to Costa Rica in the Drake area of the Osa Peninsula this plant (or something very similar) was found to be fairly common in the Los Planes area. It had a standard looking Costus scaber flower but sometimes flowering on a separate, nearly leafless stem instead of terminal on the main leafy stem. |