abundant angles appearances castor-beans castor-oil castor-oil-plant castor-seeds cluster clusters common cotyledons Euphorbiaceae fast-growing flower flowers foliage highly-toxic inflorescences invasive large large-leaves leaf leaves medicinal palm-of-Christ palma-Christi poison poisonous ricinus-communis seed-pods seedhead shrub shrubbery spiky-green-seed-capsule spiny surface surfaces textured textures toxic toxins vegetation wasteland-weed weed widespread background corrode corrosion industrial lettering metal numbers oxidation oxide paint pipe rust texture type urban wabi sabi wabisabi water pipe erode erosion gouge grunge industry old scratch wear worn abstract abundance aromatic bulk caraway seeds cooking elongated food lines plenty quantity ribbed seeds shapes size spices wallpaper color decoration decorative detail forest front green natural nature open organic pattern plant tree trunk wild wood wooden contrast dew dewdrop drop drops falling in drops fresh rain raining spring water wet appearance backdrop building city column concrete design designed external gray grey historic layered layers levels patterned strength strong structure style support support column wall