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With an opposite leaf arrangement, two leaves arise from the stem at the same level (at the same node), on opposite sides of the stem. An opposite leaf pair can be thought of as a whorl of two leaves. With an alternate (spiral) pattern, each leaf arises at a different point (node) on the stem. Distichous leaf arrangement in Clivia
Clivia shares common features with the other members of the subfamily Amaryllidoideae. Individual flowers have three sepals and three petals, all very similar (although the sepals are typically narrower than the petals) and collectively called tepals. In Clivia the tepals are fused at the base to form a tube, although this may be very short ...
Distichirhops is a genus of flowering plant belonging to the family Phyllanthaceae.The genus comprises 3 species, found in the secondary forests of New Guinea and Borneo.The taxon name comes from Greek (distichos meaning "in two rows" and rhopo meaning "shrub"), referring to its distichous leaf arrangement and shrubby habit.
Chart illustrating leaf morphology terms. The following terms are used to describe leaf morphology in the description and taxonomy of plants. Leaves may be simple (that is, the leaf blade or 'lamina' is undivided) or compound (that is, the leaf blade is divided into two or more leaflets). [1]
The term distichous literally means two rows. Leaves in this arrangement may be alternate or opposite in their attachment. The term 2-ranked is equivalent. The terms tristichous and tetrastichous are sometimes encountered. For example, the "leaves" (actually microphylls) of most species of Selaginella are tetrastichous but not decussate.
Clivia miniata has a fleshy, mostly underground stem to 2 cm (1 in) in diameter, with numerous fleshy roots. The stem produces long, arching, strap-like leaves growing to about 45 cm (18 in) long, arranged in two opposing rows ( distichous ).
Kumara plicatilis derives its common name fan-aloe from its former placement in the genus Aloe and the unusual distichous arrangement of its linear leaves. Its Latin scientific name plicatilis also means "folded" or "pleated", or possibly "foldable"; [4] it is in any case a misnomer because the leaves are nothing like plicate and do not fold.
Juveniles have a distichous (two-ranked) leaf arrangement, with tubercled, strap-shaped, blunt leaves. Adults form rosettes of extremely long, smooth, sharply-pointed "scimitar-shaped" leaves which are green and extremely densely covered in bands of tiny white spots. The leaves also have rough partial margins.