354 WOODY PLANTS OF MASSACHUSETTS. 
nearly orbicular or elliptic, with two or three rounded teeth on 
each side, and scattered beneath and on the margin with a few 
hairs. The stem is reddish. The almost capillary flower stem, 
the bracts at the base of each partial stem, as well as the calyx, 
are covered with minute, glandular hairs, which are also found 
on the inside of the corolla. The calyx ends in five lanceolate 
segments. Beneath the calyx is a pair, sometimes two, of slen- 
der, linear bracts. The country people call this plant twin- 
flower. Botanists have given it a name in honor of Linneus. 
How often, in the dark forests of both continents, in the northern 
parts of which it is widely spread, has the name of the great 
reformer and systematist been called to the mind of his fol- 
lowers by the sight of this interesting plant ! 
“Linnea,” says Sir James Edward Smith, ‘is so called in 
honor of the great Swedish naturalist, Linneus; and appears, 
by the journal of his tour to Lapland, to have been chosen by 
himself to commemorate his own name, when he gathered it 
at Lyksele, May 29, 1732. Former botanists had called this 
elegant and singular little plant Campanula serpyllifolia ; but 
Linneus, prosecuting the study of vegetables on the only cer- 
tain principles, the structure of their parts of fructification, soon 
found this to constitute a new genus. He reserved the idea in 
his own mind till his discoveries and publications had entitled 
him to botanical commemoration ; and his friend Gronovius, in 
due time, undertook to make this genus known to the world. 
It was published by Linneus himself, in the Genera Planta- 
rum, in 1737, and the same year in the Flora Lapponica, with 
a plate; being, moreover, mentioned in the Critica Botanica, 
as ‘a humble, despised, and neglected Lapland plant, flowering 
at an early age,’ like the person whose name it bears.” 
XVI. 2 THE FEVER ROOT. Z'RIOSTEUM. LL. 
A small genus, containing only four or five species of peren- 
nial herbs or low shrubs, found in North America and the 
mountains of Central Asia, with opposite leaves whose stems 
are somewhat united at base, and flowers on short stalks or 
sessile in the axils of the leaves. The lobes of the calyx are 
