Windmill palm is one of the hardiest palms. The parlor palm is one of the most heavily sold houseplant palms in the world. The oases grow date palms, acacia and eucalyptus trees. Vegetation is profuse, including scrub forest, coconut palms and herbs. Palms and acacia trees grow in the Sahelian region. Units included fingers, the distance from thumb to forefinger, palms, cubits and wingspans. They are gathered mostly from coconuts, nipa palms, or kaong palms. In the absence of palms or trees, they can burrow into the ground. Anjali mudra is performed by pressing the palms of the hands together. Pseudopetioles occur in some monocotyledons including bananas, palms and bamboos. Number 10 is displayed by presenting both hands open with outward palms. They wove fibers from plants such as cabbage palms and saw palmettos. They have been known to nest in trees or in cavities of "Maurita flexuosa" palms. Blisters may also occur on the palms, soles, and genital area. Many fruits are available in this region, including bananas, tree grapes, and peach palms.