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''Forsskaolea tenacissima'' is a member of the non-stinging nettles genus ''Forsskaolea'' and is in the same family as the stinging kind, Urticaceae. Described as "looking like a tough character that does not want or need a caress", ''F. tenacissima'' makes its home where not many plant species survive, in stony soils, road edges, in the gravel wadi〔 and "in the rock crevices and water-receiving depressions" above the stone pavements of the Hamadas. ''Forsskaolea tenacissima'' was named in mourning of a student of Carolus Linnaeus, a Swede named Peter Forsskål, who died while gathering botanical and zoological specimens from the Arabia Felix. Linnaeus named this plant ''Forsskaolea tenacissima'' because the plant was as stubborn and persistent as the student had been. ==Description== The almost upright fleshy, stiff-haired, woody annual〔 ''F. tenacissima'' appears after the rains in rocky and difficult to grow in places like the Sahel of Mauritania, and (the Horn of Africa), and now recorded in Niger. It is a chamaephyte that is much relished by the stock and wild animals who graze on it in the Saharo-Arabian.〔 〕 ;Leaves and stems: to leaf stalks. Broad-side of leaves are squared-oval to round to long and to wide. Upper leaf surfaces have straight and hooked hairs and the lower leaf is densely white-wooly with hair. Small leafy outgrowth at the base of the leaf are rounded, to long, to wide, persistent and dry—not green. ;Flowers: Five involucral bracts narrow and tapering to a point, to long and densely wooly. Four to eight male flowers and two to six female flowers in the center of the flower head which is attached right to the stem. Three unequal sepals; long stamen with a pointy anther and conical long ovary which is surround with dense wool. Stigma is as long as the ovary. ;Seeds: Achenes are elliptical, reddish-brown and long.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Forsskaolea tenacissima」の詳細全文を読む スポンサード リンク
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