78-2 
series of slender but somewhat stiff and rough capillary bristles. Achenia 5-angled, 
not striate. 
The species of this genus used in medicine are, beside the two under consid- 
eration, the American £. aromaticum, Linn., sesstlifolium, Linn., tencrifolium, Willd., 
and ageratoides, Linn., all considered tonic, diaphoretic, and antiperiodic, the latter 
being the supposed cause of the “trembles” in cattle; £4. votundzfolium, Linn., a 
palliative in consumption; the Texan mata (£. incarnatum, Walt.) is said to be 
diuretic, and is used for flavoring tobacco ; while Z. fenzculceum, Willd., leucolepsis, 
T. & G., and hyssopifolium, Linn., are considered to be antidotes to the poisonous 
bites of reptiles and stings of insects. The European £. cannadinum, Linn., is 
diuretic, emetic, and purgative; the South American £. g/utnosum is one of 
the sources of the substance known as Matco;* the Jamaican £. nervosum is 
regarded as an almost certain cure for cholera, typhus, typhoid, and small-pox; 
- while the Brazilian aya-pana (£. ayapana, Vent.) is an aromatic tonic and febrifuge, 
and is considered a sure remedy—if timely used—for antidoting the effects of the 
bites of poisonous reptiles and insects ; this last is said to be the most powerful 
species of the genus, and as such, it should be carefully proven. 
Composite.—This immense and purely natural order, consists of herbs, and 
rarely shrubs and trees; it comprises one-tenth of all known phznogamous plants, 
and one-eighth of those of North America, where it has 237 genera and 1610 
species, of which 1551 are indigenous. Its members are easily distinguished as 
such, even by general observation; but many of the genera and species require 
close and careful study for their identification. 
Since this work was begun, and too late for revision, Prof. Asa Gray’s almost 
phenomenal volume,+ including this order, appeared. In his careful and laborious 
revision of the order many changes were instituted in the arrangement and names 
of the tribes and genera, making the following table necessary to an understanding 
of the order as it stands at present: 
New ARRANGEMENT. 
Tuts Worx. 
OLp ARRANGEMENT. 
New ARRANGEMENT. 
Tuis Work. 
TRIBE, 
GENus. 
TRIBE, 
TRIBE, 
GENUs. 
Oxp ARRANGEMENT. 
See Rome SE 
TRIBE, 
Eupatoriacez. 
Asteroidez. 
Inuloidee. 
“ec 
Helianthoidez. 
“ 
Anthemidez, 
ce 
“ 
78,79. Eupatorium. 
80, Erigeron. 
89. Graphalium. 
81. Inula, 
82. Ambrosia. 
83. Helianthus. 
84. Anthemis. 
85. Achillea. 
86. Tancetum. 
(Same.) 
Senecionidez. 
Asteroidez. 
Senecionidez, 
“ée 
“ 
“ee 
“ce 
Anthemidez. 
Senecionidez. 
ce 
Cynaroidee. 
Cichoriacze. 
“ 
“ce 
“ 
87, 88. Artemisia. 
90. Erechthites. 
gt. Senecio. 
92. Arctium. 
93. Cichorium. 
94. Prenanthes. 
95. Taraxacum. 
g6. Lactucca. 
Senecionidez. 
(Same.) 
“c 
Cynareze (Lappa)- 
| (Same.) 
« (Nabalus). 
“é 
* The officinal matico, however, is derived from Piper angustifolium, R. & P. (Piperacez). 
t Synop. Flora of N. A. 
