maple poplar in bloom in spring

april axils axis bark bracteoles bracts branches branchlets broad brown buds catkins china compound damp dark deeply distributed east family fissured flower flowering forests fruit garden genus glandular gray green hairs hillsides inflorescence jugaceae large leaf leaves like male maple may narrow north oblong odd old persistent plant planted poplar pterocarya rachis rare ripening sessile small smooth sparse spring stalked star stellate stenoptera streams street strips tree wings yellow young