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Orinda, California, United States
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Orinda, California, United States
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Orinda, California, United States
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Orinda, California, United States
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Tanga, Tanzania
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Tanga, Tanzania
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Tanga, Tanzania
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Photo taken in or near Amani Nature ReserveEast Usambara Mountains, TanzaniaBy H.J. NdangalasiPost-Production by J. Quicho
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Photo taken in or near Amani Nature ReserveEast Usambara Mountains, TanzaniaBy H.J. NdangalasiPost-Production by J. Quicho
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Tanga, Tanzania
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Tanga, Tanzania
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Orinda, California, United States
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La Plana de Zaragoza: Aragn (Espaa)Familia: RHAMNACEAEDistribucin: La especie se distribuye por distintos paises de la cuenca mediterrnea; La subespecie es endmica del C y E de la Pennsula Ibrica e islas Baleares. En Aragn se encuentra en reas clidas del Sistema Ibrico, rehuyendo los altos sistemas montaosos, y en la Depresin del Ebro, por donde alcanza el Preprineo en las solanas de la Sierra de Guara, Graus, Agero, Las Peas de Riglos, etc.Hbitat: Forma parte de encinares secos, coscojares, pinares de carrasco, romerales, espartales, etc. instalados en reas soleadas, sobre suelos secos y someros. Secundariamente coloniza gleras, eriales, bordes de caminos o pistas, mrgenes de caminos, etc.Preferencia edfica: Indiferente. Se encuentra preferentemente sobre suelos calizos, aunque tambin aparece sobre margas, yesos, limos, arcillas y suelos de naturaleza cida.Rango altitudinal: 75- 1000 ( 1280 ) mFloracin: Abril - MayoForma Biolgica: Nanofanerfito perennifolioExtractado del Atlas de la Flora de Aragn (Herbario de Jaca)
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Miena, Tasmania, Australia
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Miena, Tasmania, Australia
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Orinda, California, United States
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Orinda, California, United States
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Seed sample of Pomaderris elliptica (Yellow Dogwood). Mature seeds are typically very dark brown to black. Immature or infested seeds are typically pale brown. White appendage is an elaiosome.
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Sample of Pomaderris elliptica seed showing the white elaisome characteristic for this genus. The elaisome helps in the dispersal of the seed. Ants collect such seeds, eat the elaisome and then later dispose of the seed. In this way the seed is often moved quite some distance.Like many members of the Rhamnaceae, Pomaderris exhibits physical dormancy (hard seededness) which prevents water entering the seed. To promote germination the seeds are placed under a dissection microscope and a small piece of the seed coat removed with a scalpel. This can be a tricky task as these seeds are about 2mm long.
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Clifton Beach, Tasmania, Australia
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