common bladder-moss plant (physcomitrium pyriforme) sporangium, operculum and calyptra - 19th century - 種子散播 植物學 幅插畫檔、美工圖案、卡通及圖標
fringed heartwort plant (ricciocarpos natans) cross section of sporangium with and without spore cases - 19th century - 種子散播 植物學 幅插畫檔、美工圖案、卡通及圖標
cranesbill flower (geranium) pistil and bills after seed dispersal - 19th century - 種子散播 植物學 幅插畫檔、美工圖案、卡通及圖標
leafy liverwort plant (jungermannia) sporophyte, spores and elaters - 19th century - 種子散播 植物學 幅插畫檔、美工圖案、卡通及圖標
