The name—of it—is "Autumn"—
The hue—of it—is Blood—
An Artery—upon the Hill—
A Vein—along the Road—
Great Globules—in the Alleys—
And Oh, the Shower of Stain—
When Winds—upset the Basin—
And spill the Scarlet Rain—
“Globules” here not only extends the blood metaphor but displays Dickinson’s startlingly precise, even technical vocabulary. A “globule” is a round particle or drop. 
 The composition of blood-globules was still a matter of scientific uncertainty and debate in the 19th century. Here is a Belgian scientist’s  paper “On the Globules of Blood”  from about 20 years before Dickinson’s poem. 
 The “Alleys” here may be alleyways in a town, but could also refer to tree-lined lanes in the countryside.
The name—of it—is Autumn 656