144 
ORGANOGRAPHY. 
BOOK 1. 
tain horn-like processes are cornua^ or horns; the upper end 
of these is the beak, or rostrum^ and their back, if it is dilated 
and compressed, is the ala, or appendix ; occasionally there is 
an additional set of horns proceeding from the base of the 
orbiciilus, and alternate with the horns^ these are ligulcB ; the 
circular space in the middle of the top of the orbiculus is the 
scutum. Brown names the orbiculus corona staminea, and its 
divisions foUola, or leaflets. 
In some plants, as Cynoglossum, the lamellae are very 
small, scale-like, and overarch the orifice of the tube ; such 
have received the name of fornix. 
Link calls every appendage which is referable to the corolla 
a paracorolla ; or, if consisting of several pieces, parapetalum ; 
and every appendage which is referable to the stamens a 
parastemon. The filiform rays of the corona of Passiflora the 
same author calls paraphyses or parastades, 
Moench names such appendages of the corolla as the fila- 
mentous beard of Menyanthes perapetalum^ and Sprengel calls 
the same thing nectarilyma. 
In Ranunculus there exists at the base of each petal a little 
shining, sometimes elevated, space which secretes honey. This 
is the true nectarium or nectarostigma of Sprengel. By some 
writers it has been considered a kind of reservoir, in which 
there is much plausibility ; but it seems to me, from analogy, 
to be a barren stamen, united with the base of the petal, and 
to be of the same nature as the lamella of other plants. 
8. Of the Stamens. 
106 107 110 111 112 
