Plant-Structure 
A staminate flower has stamens, but no pistil; a pistillate 
flower has pistil, but no stamens ; this form of growth prevails in 
the catkin-bearing (amentaceous) trees and shrubs; sometimes 
the two forms grow on the same plant ; sometimes only the stami- 
nate on one, the pistillate on another, as in the ailanthus. 
ARRANGEMENT OF BLOSSOMS 
Blossoms grow either sizgly or in clusters, Clusters are of 
different forms: 
An UMBEL contains few or several blossoms, whose separate 
stems grow from almost the same point on the branch, as in 
cherry or apple-tree (Fig. 14). 
A RACEME is a slender, leafless, unbranched stalk, bearing 
numerous blossoms (with stems) throughout its length (Fig. 15). 
A SPIKE is a raceme densely crowded with minute stemless 
blossoms (Fig. 16). 
A PANICLE is a leafless branching stem covered with blossoms ; 
in other words a compound raceme: both raceme and panicle 
commonly bear the rudiments of leaves, often called dracts : a 
leafy raceme has the leaves somewhat developed (Fig. 17). 
A CORYMB is a2 raceme, in which the lower flower-stems are lon- 
ger, producing a flat-topped or convex cluster (Fig. 18). Com- 
pound corymbs and cymes often have an immense number of 
blossoms, as in the hydrangea and hobble-bush, 
A CYME is much like a corymb, flat-topped or convex, but the 
middle flowers developing first. 
A HEAD is a dense spherical mass of small blossoms (Fig. 19). 
A CATKIN or AMENT is much like a spike, but the blossoms 
are very rudimentary, having no corolla (sometimes no calyx), 
staminate and pistillate, and 1-4-clustered, each cluster under a 
scale or minute bract, and crowded on the stem (Fig. 20). Cat- 
kins are usually pendent, spikes erect. 
A CONE is a longer or shorter (occasionally spherical) growth, 
covered with broad, flat, rigid scales against which (with no cov- 
ering) lie the seeds (Fig. 21). 
Blossoms (single or clustered) are terminal or lateral, accord- 
ing as they are borne at the end of the branch, or along the side. 
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