• Spectacular Show of Seed Dispersal in Desert Rose

    May 28, 2019

    2005 June 2

    2019 01 28 ?????

    Photographer: Menashe Davidson 
    Summary Author: Menashe Davidson 

    The desert rose (Adenium obesum) is a striking plant with succulent stems and deep pinkish red flowers (top photo). Nearly every part of these plants commands our interest, from the dramatically swollen stems on older plants to the bright flowers to the tight clusters of narrow, green leaves. The fruit, a long pod that ranges in length between about 7 to 9 inches (17 to 22 cm), is classified as a follicle. Seeds have cylindrical shapes, with a brown staining integument and a brown-gold pappus (bristles) on both ends, which helps dispersion by wind. Desert rose seeds are similar to the ones in oleander (Nerium oleander), but in this species, bristles are present on only one end.

    The flowering photo was taken on June 2, 2005, and the pod and amp seeds photo was taken on January 28, 2019; both in my home garden in Rishon LeZion, Israel.

    Photo Details: Top - Camera: PENTAX Optio 330GS; Exposure Time: 0.0050s (1/200); Aperture: ?/4.8; Focal Length (35mm): 38. Bottom - Camera: NIKON D7100; Software: Windows Photo Editor 10.0.1; Exposure Time: 0.0040s (1/250); Aperture: ?/20.0; ISO equivalent: 500; Focal Length (35mm): 150.

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