Basal angiosperm groups tend to have carpels arranged spirally around a conical or dome-shaped receptacle. In the Ionic capital, spirally coiled volutes are inserted between the abacus and the ovolo. A pollen cone consists of a slender rachis with numerous spirally arranged microsporophylls around it. Rosaceae generally have five sepals, five petals, and many spirally arranged stamens. The tree has glabrous obovate leaves, usually longer than and spirally arranged. The branchlets are covered with small, green, incurved, point-tipped, spirally arranged, overlapping leaves. Furthermore, flowers have cone-shaped receptacle that bears spirally arranged carpels from which styles emerge. The flowers are white to red, with spirally arranged tepals. The sporangia were borne in the axils of the leaves, which were spirally arranged. Churros are generally prisms in shape, and may be straight, curled or spirally twisted. The Arecaceae (palms) have their leaves spirally arranged on an unbranched trunk. The leaves are alternate and spirally arranged. Leaves are spirally arranged and may grow long and wide. The leaves have three leaflets and are spirally arranged. The leaves are simple and spirally arranged.