Proteaceae Stock Video Footage


proteaceae

The genera of Proteaceae are highly varied, with Banksia in particular providing a striking example of adaptive radiation in plants. This variability makes it impossible to provide a simple, diagnostic identification key for the family, although individual genera may be easily identified. Proteaceae are generally trees, rarely of more than 40 m in height, and are usually of medium height or low or perennial shrubs, except for some Stirlingia species that are herbs. They are facultatively deciduous (Embothrium coccineum), rarely acaulescent, the cauline portion of the collar is often thickened (lignotuber). Indumentum of three-celled hairs, sometimes glandular, rarely absent, the apical cell is usually elongated, acute, sometimes equally or unequally bifid. Leaves rarely aromatic, usually alternate, and in a spiral, rarely opposed, or verticilate coriaceous, rarely fleshy or spinescent, simple or compound (imparipinate, imparibipinate or rarely palmate or digitate with pinnatisect segments), entire edge to (3-)pinnatisect (giving a fern-like aspect) rarely divided dichotomously, often remotely toothed, crenate or serrated, seated or stalked the petiole frequently with a swollen base but rarely sheathed (sometimes in Synaphea), without stipules pinnate sometimes palmate or parallel venation, brochidodromous or reduced to a single prominent vane, vernation normally conduplicate anisophylly often occurs during the different growth periods leaf blade dorsiventral, iso...




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