Two plants, a fruiting clematis with separate seeds and a plant with blue fruits. Watercolour. https://www.rawpixel.com/image/13976830/image-cat-flower-plantFree Image from public domain licenseOak (Quercus species): leaves and twigs. Pen drawing, partially coloured. https://www.rawpixel.com/image/13999958/oak-quercus-species-leaves-and-twigs-pen-drawing-partially-colouredFree Image from public domain license