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''Glossopetalon spinescens'' is a species of flowering shrub in the family Crossosomataceae known by the common names spiny greasebush, spiny greasewood and Nevada greasewood. It is native to the western United States and northern Mexico, where it grows in mountainous habitats, often on limestone substrates. ==Description== This shrub forms a dense, erect clump of many thin, branching, thorny stems approaching in maximum height. The green oval leaves are less than two centimeters long. Small white-petalled flowers appear in the leaf axils. The fruit is a single or double follicle a few millimeters wide.〔Mason, C.T. 1992. Crossasomataceae, Crossosoma Family. Journal of the Arizona-Nevada Academy of Science 26:7-9.〕 Two varieties are recognized:〔 var. ''spinescens'' from southeastern Arizona, New Mexico, Texas, Chihuahua and Coahuila is early deciduous, the leaves either lacking stipules or with stipules less than 0.1 mm long var. ''aridum'' M.E. Jones, from northwestern and central Arizona to California and Washington State, with leaves evergreen and with stipules up to 0.9 mm 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「Glossopetalon spinescens」の詳細全文を読む スポンサード リンク
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