In his Botanical rambles in Florida, Mr. A. H. Curtis says: "Leaving this inhospitable isle, we soon reach another called 'Possum Island which is similar to the first one except in vegetation. The characteristic plants of this island are not boldly repellant as on the other, but of a deceptive, treacherous nature, armed with worse but partially concealed weapons. Creeping among the grass is the crowfoot cactus (Opuntia Pes Corvi), whose spines adhere to the fingers so tenaciously by their barbed points that joints of the cactus are pulled off with them. It is a plant not to be handled with impunity, much less to be sat upon. Our hands are stung with nettles and with the minute spines of the Opuntia vulgaris. Our clothes bristle with the seeds of the Spanish needle (Bidensbipinnata) and are spotted with the adhesive leaves of the "Poor Man's Plaster" (Mentzelia Floridana). This plant is as handsome as a primrose, and as incapable of giving pain, yet one learns to dread it more than any other. It is a weak, diffusely branching plant with bright yellow flowers and handsome foliage, which, with age, assumes various shades of brown and yellow.

A weary, unwary tourist is tempted to recline upon the soft mats spread invitingly by the Mentzelia, but woe to him if he yields to the temptation, for on rising he will find himself as fantastically decorated as a harlequin, with patches of yellow, orange, russet and various shades of green. The leaves stick like adhesive plasters and cannot be removed by pulling or scraping. The whole plant is covered with minute, white, barbed, siliceous hairs, and as the leaves are very tender it is almost impossible to remove them from a woven fabric.