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Cross section of older twig showing annual twigs and resin ducts. Pine has an endarch siponostele. B...
Nereis, Parapodium. Wet mount. Structure used for respiration and locomotion, depending on the speci...
Mnium, Mature Capsule L.S. Botany Slide – Mnium, Mature Capsule L.S., Prepared Slide, (each)
Unilocular, Asexual material with sporangia, whole mount. Botany Slide – Ectocarpus, Prepared Slid...