532 ROBINSON. 
paniculatum h. Heyne ex Schauer in DC. Prod. xi. 623 (1847), in 
synon. Vitex involucratus Presl, Bot. Bemerk. 148 (1844). Sphaeno- 
desma unguiculata (Wall.) Schauer in DC. Prod. xi. 623 (1847). 
In a recent attempt to verify the identification and labelling of the 
Verbenaceae in the Gray Herbarium, corrections were noticed which 
should be made in the current treatment of two species of the Gala- 
pagos Islands, namely: 
1) The plants which have been treated as Avicennia tomentosa Hook. 
f. Trans. Linn. Soc. xx. 195 (1847); Anderss. Om Galap.-darnes Veg. 
201 (1853), also reprint, 82 (1857); Robinson & Greenman, Am. Jour. 
Sci. ser. 3, l. 147 (1895); and A. officinalis Robinson, Proc. Am. Acad. 
xXxxviii. 194 (1902), not L., are referable to A. NiTIDA Jacq. 
2) The plants of the Galapagos Islands treated as Lippia lanceolata 
Rose, Contrib. U. S. Nat. Herb. i. 137 (1892), not Michx.; L. nodiflora 
Robinson & Greenman, Am. Jour. Sci. ser. 3, |. 147 (1895), not Michx.; 
and L. canescens Robinson, Proc. Am. Acad. xxxviii. 196 (1902), not 
‘HBK., are all to be referred to L. rneptans HBK. Nov. Gen. et Spec. 
‘ii. 263 (1817), a species fairly well marked as to its firmer veins and 
more salient teeth of the leaves. 
AGERATUM Hovuston1ANumM Mill., var. muticescens, var. nov., sta- 
tura foliis pubescentia floribus etc. formae typicae simillimum differt 
squamis pappi flosculorum vel omnium vel plurium valde reductis 
muticis ca. 0.1-0.2 mm. longis.— Mexico: Wartenberg, near Tanto- 
yuca, prov. Huasteca, collected in 1858, L. C. Ervendberg, no. 100 
(typ, in Gray Herb.); without locality, from the herbarium of the 
late Dr. F. W. Klatt (Gray Herb.); cultivated in the Missouri Botani- 
cal Garden, from 1886 (when collected by Pammel) to 1896 (when 
a second specimen was prepared by H.C. Irish). The specimens, now 
in the herbarium of the Missouri Botanical Garden, show by their 
labelling that the plant has passed under several horticultural names, 
“Stella Gurney,” “Cope’s Pet,”’ ete. The seed is said to have come 
from Haage & Schmidt’s establishment. In these specimens the 
pappus, though for the most part short and muticous, shows some 
variability on one and the same plant or even in the same head, certain 
florets, especially the central ones and those of the terminal heads, 
tending to have awned scales in the manner of the typical form. 
Eupatorium brachychaetum, spec. nov., herbaceum vel cum cau- 
dice ramoso 1 dm. longo paullo lignescenti; caulibus subscaposis 2-2.5 
dm. altis gracilibus puberulis purpurascentibus basin versus solum 
foliosis apice 2~4-capitulatis; foliis oblanceolati-oblongis tenuibus op- 
positis 8-11 cm. longis 2-2.5 em. latis duplice crenato-lobulatis vel 
