with fistulose twigs inhabited by ants, pinninerved leaves, abscence of domatia, anthers of whorl 
III with two sporangia, and tepals not persistent in fruit, make this species a quite distinct taxon. 
If not for the presence of persistent indument on leaf surfaces, C. formicarium would be 
morphologically closer to the group of species with pinninerved leaves and without domatia (C. 
amplexicaule, C. chavarrianum, C. chiapense, C. hammelianum, C. quadrangulum, and C. 
uninervium). Still, similarity with C. napoense is stronger, for this species also has fistulose 
twigs (no report of ants dwelling in them has been recorded), leaves are sometimes puberulent 
underneath, stamens of whorl III are with two sporangia, and tepals are partially persistent in 
fruit. However, number of secondary veins, and indument separate clearly these two species; C. 
napoense with (5)6-7(8) pairs of secondaries, and lower leaf surface sparsely puberulous with 
hairs straight and appressed, without wax particles, while C. formicarium is with 9-12 pairs of 
q secondaries, and lower leaf surface is densely pubescent, with hairs rather wavy, and presents 
wax particles. 
Cinnamomum glaziovii (Mez) Kostermans, Reinwardtia 6: 21. 1961. 
Phoebe glaziovii Mez, Jahrb. Konig]. Bot. Gart. Berlin 5: 216. 1889. Type. Brazil. Rio de 
Janeiro: Petropolis, boundaries of Piabanha, August 1883, Glaziou 15368, (lectotype, B, n.v., 
chosen here; isolectotypes, C! (2 sheets), G!, RB! (2 sheets)). 
Trees (?);twigs pubescent when young, hairs ca. 0.3 mm long, straight and rather 
appressed, glabrescent soon; petiole (4.5) 8 - 12.5 (14) mm long, (0.5) 1 - 1.5 mm wide, 
a 88 
