Sentence:  Now the thing for us to do is to find ourselves a couple of those wonderful flowering currants such as the red Ribes sanguineum of our Pacific Northwest , or otherwise a good sloe tree , or perhaps some nice pussy willow in bloom , preferably one with <WSD>male</WSD> or staminate catkins . 
Meaning of the word marked with <WSD> tags:  being the sex (of plant or animal) that produces gametes (spermatozoa) that perform the fertilizing function in generation