a dropped stem with flower of grevillea robusta, commonly known as the southern silky oak

arid australian backlit biology botany bud buds cells chlorophyll close closeup detail dichotomy drop endophytic fern flower flowers green ground growth healthy horticulture india leaf leaves light nature nudum oak ornamental petals plant plants psilotaceae psilotum rhizomes roadside silky sporangium sporophyte stems synangium tree vascular vibrant whisk wind yellow