464 FLORA OF BRAZIL. 



CHROMOLiENA, DC. 



4840. (1). Ch. horminoides, DC; herbacea parce ramosa 

 ubique capitulis exceptis tomentosa, foliis petiolatis 

 lanceolatis utrinque acutis apice mucronulatis crenato- 

 serratis subtriplinerviis creberrime resinoso-punctatis, ca- 

 pitulis ad apices ramulorum paucis subcymosis 40-floris, 

 involucri obovati squamis multiserialibus imbricatis late 

 oblongis obtusis striatis glaberrimis. 

 Chromolsena horminoides, DC. Prodr. 5, p. 133. 

 Hab. Diamond District, Brazil. Fl. in July. 



Herba perennis, basi simplex, 1-2-pedalis. Folia 3-4-poll. 

 longa, 9-12-lin. lata, subtus lanuginoso-tomentosa. Involu- 

 crum pallide violaceum, 6 lin. longum. Receptaculum 

 paleaceum, paleis linearibus, obtusis, apice coloratis. Corollae 

 violaceee, vix exsertae. Achsenia acute 5-angulata, ad angulos 

 piloso-scabrida. Pappus 1-serialis, setosus, setis scabridis, 

 stramineis, corollam subaequantibus. 



This I believe to be the plant on which De Candolle 

 founded the genus. It and the two succeeding species are 

 remarkable for the immense number of very minute globular 

 resinous particles which exist on both sides of the leaves. 

 They are much fewer on my C. pratensis (Hook. Lond. 

 Journ. 1, p. 176), and do not exist at all on C. decumbens. 

 4840. Ch. Candolleana ; herbacea erecta ramosa tota 

 capitulis exceptis tomentosa, ramis oppositis elongatis 

 teretibus striatis foliosis, foliis brevi petiolatis utrinque 

 obtusiusculis apice mucronulatis grosse crenato-serratis 

 triplinerviis creberrime resinoso-punctatis, capitulis ad 

 apices ramulorum paucis subcorymbosis 40-floris, involucri 

 obovato-oblongi squamis multiserialibus imbricatis oblon- 

 gis obtusis striatis glaberrimis. 

 Hab. Serra das Araras, Province of Minas Geraes, Brazil* 

 Fl. in June. 



Herba perennis, 2-3-pedalis. Folia 15-24-lin. longa, 6-9' 

 lin. lata. Petioli 1^-2-lin. longi. Involucrum pallide viola- 

 ceum, 6-lin. longum. Receptaculum paleaceum, paleis anguste 



