Keywords: Oxalis rosea longitudinal section linedrawing.png Section through a pulvinus in Oxalis rosea Figure 63 from The Power of Movement in Plants scanned from original Oxalis rosea longitudinal section of a pulvinus on the summit of a petiole of a cotyledon drawn with the camera lucida magnified 75 times p p petiole f fibro-vascular bundle b b commencement of blade of cotyledon 1898 - New York D Appleton and Company Charles Darwin LL D F R S assisted by Francis Darwin PD-old-80 PD-US thumb left Original scan Oxalis rosea Drawings with camera lucida Pulvini |