Autochory is dispersal by the plant itself, using no outside forces in moving the diaspore
Adherent sepals were removed from the diaspores
was received as large lumps from the quarry.
bank reflects the historical process of the life cycle of plants, since their establishment in the habitat until their distribution in space and time (Christoffoleti & Caetano, 1998).
The phytotoxic activity of aqueous leaf extracts of the donor species was tested on diaspores
of three weeds: barnyard grass (Echinochloa crus-galli (L.
Bauxite mineral is formed form the mixture of multi-mineral isomporph of diaspore
, Gibbsite, and Boehmite.
The ore microscope observation shows that the matrix mineral components in the bauxite ores are cryptocrystalline diaspore
, hematite, ferrohydrite, kaolinite, anatase, vanadium titanomagnetite and chamosite (Figs.
the mature diaspore
coat is a very thin tissue and is considered weak and easily destabilized.
the Keystone Trappe Rock quarry at Cornog (exquisite small specimens of Alpine-type cleft minerals), Brinton's quarry at Darlington's Corners (the world's best large clinochlore crystals), the Poorhouse quarry, West Bradford Township (excellent microcline), Corundum Hill, Newlin Township (good corundum and superb diaspore
crystals), the fields around Parkesburg where line rutile crystals may still be found loose in the soil.
morphology and seed dispersal in several wind-dispersed Asteraceae.
Fruiting periodicity depends principally on flowering, but it is also influenced by environmental conditions appropriate for fruit development, diaspore
dispersal, and seedling establishment (Rathcke and Lacey, 1985; Ibarra-Manriquez et al.
The less desirable minerals are boehmite and diaspore
, both of which are monohydrates of aluminum.