-on the Genus Juncus of Linneus. 293 
|. thus described: * Calyce hexaphyllo, staminibus totidem, quot 
sunt calycis folia, et semine multo in vasculo seminali recondito 
a Scirpo differt *." The species are also divided into those which 
are leafy and those which are leafless. 
Scheuchzer and Haller have included the Gramina juncea and 
the Gramina hirsuta in their Juncoides, rejecting at the same time 
from the. former family the Eriophora and some other genera 
which Ray had retained. The real Junci, such as acutus, glaucus, 
effusus, &c. rank under a separate division, with this definition : 
* Flosculi hexapetali, rosacei, sex scilicet petalis in orbem posi- 
tis constantes."—** Vascula seminalia triquetra aut ex triquetro 
rotundata, trivalvia, septoque per medium cujusque valve lon- 
gitudinem procedente, in tria loculamenta divisa, seminibusque 
plurimis plerumque, ac minutissimis repleta, a Juncoide autem spe- 
cialiter differt, scirpis teretibus, prorsus enodibusT," &c. Tour- 
nefort, whose attention was chiefly arrested by the corol, has in- 
cluded in his character all three of these strongly-marked families, 
because he found their petals, otherwise called the leaflets of the 
calyx, to correspond. "The penetrating Micheli, however, led 
more by the internal structure of plants, adopted two distinct 
genera; the first, Juncus, which he describes as having a trilocu- 
lar, many-seeded capsule ; the other, Juncoides, with a unilocular, 
three-seeded capsule. The great Linnæus, guided by Tournefort, 
re-joined them ; and at the same time adopted in his generic cha- 
racter the peculiarity of the Gramina hirsuta, as being unilocular; 
—by which inconsistency the real Junci are all excluded! Jussieu 
. does not describe the cells in his generic definition ; but at the 
head of the natural family he calls them trilocular. 
The Gramina hirsuta seem to have been first taken up by 
| J. Bauhin under the name of Luzula. Cesalpinus calls the Jun- 
* Raii Syn, 3d ed, 431, t Scheuchzer’s Agrostographia, p. 987. 
2Q2 à 
cus 
