Thirdly: Can you give me seeds of any Rubiaceae of the sub-order Cinchoneae, as Spermacoce, Diodia, Mitchella, Oldenlandia?
"More Letters of Charles Darwin Volume II" by Charles Darwin
Corydalis, Dipsacus, Acanthaceae common, Rubiaceae of a tropical character, such as Ophiorhizae; Celastrus!
"Journals of Travels in Assam, Burma, Bhootan, Afghanistan and TheNeighbouring Countries" by William Griffith
Coffee is a shrub belonging to the family of the Rubiaceae.
"The Hawaiian Islands" by The Department of Foreign Affairs
Kadua (small, flat, winged seeds) 16 Rubiaceae.
"Island Life" by Alfred Russel Wallace