No. 6. CONTRIBUTIONS FROM THE GRAY HERBA- 
RIUM OF HARVARD UNIVERSITY. 
NEW SERIES.— No. 27. 
BY B. L. ROBINSON. 
1. DiaGnosEs AND SyNoNYMY OF SOME MEXICAN AND CENTRAL 
AMERICAN EUPATORIUMS. 
Evpatorium ANGosturRAg, Polak., Linnaea, xli, 575 (1877), has 
been recently examined by Dr. J. M. Greenman, who has found that 
the type, preserved in the Royal botanical museum at Berlin, is 
Erechtites valerianaefolia, DC. 
E. arcutum, HBK., Nov. gen. et spec., iv, 121 (1820), accord-. 
ing to Dr. Greenman, who has examined authentic material of this 
species in the Willdenow herbarium, is PJeischmannia rhodostylis, 
Soh. Bip... ~ 
E. Braunn, Polak., /. ¢., 576, is similarly, according to Dr. Green- 
man, a species of Baccharis, probably B. speciosa, DC. 
E. campylocladum, spec. nov. Frutex ramosissimus, ramis 
oppositis articulatis flexuosis a cortice fuscescenti vel nigrescenti 
tectis apice solum foliatis; foliis oppositis parvis petiolatis ovatis vel 
breviter ovato-oblongis serratis obtusis mucronulatis glabris viridi- _ 
bus subconcoloribus vernicoso-viscosis lucidis basi rotundatis vel 
subcordatis integris trinervatis leviter venuloso-reticulatis 1.5-2 em. 
longis, 1.2-1.8 cm. latis, petiolo 6-8 mm. longo; capitulis paucis in 
thyrsis foliosis congestis, bracteis lanceolatis acutis sessilibus plus 
minusve glanduloso-puberulis, pedicellis teretibus viridibus copiose 
glanduloso-puberulis 4 mm. longis, involucri squamis circa 14 sub- 
aequalibus 7-9 mm. longis lineari-oblongis dorso  glanduloso- 
puberulis 3-4nervatis viridibus apice attenuatis; flosculis circa 
20, corolla alba glanduloso-granulata 7 mm. longa angustissima 
tubulosa in fauces perangustas leviter ampliata, dentibus perbrev- 
ibus; achaenio immaturo gracili 4 mm. longo pubescenti, setis pappi 
22-30 albis sursum scabridis 8 mm. longis.— Mexico: at General 
~~ Coahuila, 20 April, 1902, 2. W. Nelson, no. 6735 (hb. Gr. 
hb. U. 8. nat. mus.). 
