114 Teschemacher on 
which the Professor has, with so much success, devoted 
his talents ; it only shows the necessity of a more inti- 
mate kuirbledgo of the habits of living plants. 
Tritiivm is placed, by the natural arrangements, in 
the family of SMILACELE, which, owing to the dico- 
tyledonous venation of the leaves, particularly in Tril- 
lium, forms a connecting link between the two great di- 
visions of Exogene and Endogenz. 
The generic character is, Perianth deeply six-parted, 
spreading, sometimes reflexed, three outer segments se- 
paloid, three inner petaloid ; ovary superior, stigmas 
sessile, spreading, either distinct or approximate ; berry 
three celled, cells many seeded ; leaves in threes, verticil- 
late at the summit of the stem ; flowers solitary, terminal. 
It emerges from the ground with the three leaves 
folded round each other, their summits bent vertically 
towards the surface, so that the geniculation first forces 
its way through the earth; these leaves gradually rise, 
unfold, and spread horizontally, discovering the’ flower- 
bud erect, which z been previously enveloped by 
them. 
The use of the terms iiit and petal, for the outer and 
inner segments of the, perianth, will render the following 
remarks more intelligible, although perhaps it might be 
sanctioned in this instance by more cogent reasons. 
Of the genus '"Trirurw, Elliot enumerates eleven 
species, some of which, I apprehend, are mere varieties ; 
and observes, that under great simplicity and conformity 
of habit, it contains and conceals many species. He 
also states of T. cérnuum, that it is the largest species 
known of the genus; this, at least, does not coincide 
with the T.. cérnuum of these regions, which is undoubt- 
