1 86 Johnson . — On the Nursing of the Embryo 
also considers them to be pappiform appendices contained 
in fissures of the achenia. Neither of these authors offers 
any explanation of their true nature. Poeppig describes 
several species, and trusting more to a theoretical opinion of 
their origin than to a careful analysis of the parts, or of the 
definitions of De Candolle and Guillemin, he misapprehends 
the structure of the ovarium, considering it to be a compound 
body, made up of three carpels combined, and of the plumose 
filaments which are described in the generic character as 
Setae hypogynae, alternating with the ovaria, and in the 
observations on the genus are doubtfully called staminodia. 
Lastly, Endlicher regards the single ovarium as compounded 
of six, enclosed in a three-parted involucre, three of them 
fertile and three sterile, the latter being the plumose 
filaments. 
The female flower of Myzodendron , consisting of a solitary 
ovarium, enclosed in the adherent tube of the calyx, it is 
evident that the plumose setae must be a production of the 
calyx or ovarium. The setae of Myzodendron contain no 
spiral vessels, and the true nerves of the calyx, though very 
obscure, may be traced in some of the species as in M . 
hr achy s tacky um , where they appear alternating with the 
position of the setae. [The vascular bundles here described 
as true nerves of the calyx curve into the three stylar lobes 
(Fig. 4, o'), and leave the ‘ calyx-tube ’ quite evascular] . . . 
The tissue of which these setae are composed is identical 
with what forms the sarcocarp of Tupeia and Viscum , namely 
elongated cells of great tenuity filled with a glutinous matter. 
. . . The elaboration of these setae, from cellular tissue, cannot 
be regarded otherwise than a very singular phenomenon, and 
as far as my observations serve it appears that it is merely 
a result of a rapid elongation of cellular tissue. The viscid 
substance, then, in this genus, instead of surrounding the 
endocarp, is confined within three fissures, and there collected 
into a terete or compressed body, which, escaping from its 
confinement, rapidly elongates from the growth of the cells 
which compose it, more than from the addition of new 
