GLEASON: A NEW GENUS OF RAPATEACEAE 151 
cephalium by two terminal pores, in Rapatea by a pore in a 
terminal appendage, in the remaining four by a single oblique 
terminal pore. Among these four, Windsorina is distinguished 
by its pedicelled flowers on fastigiate péduncles, its lack of a 
true involucre, as well as characters of the fruit. 
The ovary is broadly ovoid or subglobose, truncate at the 
apex, white in color, and an three rounded lobes. The style 
is slender and about 3.5 mm. long. The fruit is a broadly 
ovoid-prismatic, loculicidal, pe celled, yellow capsule, not 
exceeding the subtending calyx in length. Each valve is thin 
and scarious at the base but stiff and coriaceous above, ovate- 
rhombic in shape, and with a broad rounded notch at the apex. 
There is a single ovule in each cavity. The ripe seed is nearly 
globose, but somewhat flattened on the inner surface. On the 
outer surface, the chalaza is indicated by an oval brown spot 
near the apex, above which the seed bears a flattened, narrowly 
triangular, brownish-yellow appendage nearly 1 mm. long. The 
testa is white, shining, and minutely rugose. In the characters 
of the fruit Windsorina agrees with Monctrema, Rapatea, and 
Cephalostemon;in Spathanthus the fruit is uniloculat by abortion, 
and in the other three genera the ovules are two or more in 
each loculus. 
The eight genera may be separated as follows: 
Flowers pedicelled. 
eduncles numerous; involucre non Windsorina. 
Peduncles solitary; ‘utuldere of Sst bracts Rupatea 
Flowers sessile. 
Involucre none Stegolepis. 
Involucre of a single bract, spathe-like Spathanthus. 
Involucre of two bracts united into a hollow cone Saxo-Fridericia. 
Involucre of two free bracts. 
Anthers opening by a terminal slit Cephalostemon. 
Anthers opening by a terminal pore f notrema. 
Anthers opening by two terminal pores Schoenocephalium. 
New Yor« BotranicaL GARDEN 
