|
''Lupinus texensis'', the Texas lupine or Texas bluebonnet, is a species of lupine endemic to Texas. With other related species of lupines also called bluebonnets, it is the state flower of Texas.〔(How did bluebonnets become state flower? )〕 It is a biennial plant which begins its life as a small, gravel-like seed. The seed has a hard seed coat that must be penetrated by wind, rain, and weather over the course of a few months (but sometimes several years). In the fall, the bluebonnets emerge as small seedings with two cotyledons, and later a rosette of leaves that are palmately compound with 5-7 leaflets 3-10 cm long, green with a faint white edge and hair. Growth continues over the mild winter months and then in the spring will take off and rapidly grow larger, before sending up a 20-50 cm tall plume of blue flowers (with bits of white and occasionally a tinge of pinkish-red). The scent of these blossoms has been diversely described; many people say they give off no scent at all, while a few have described the scent as 'sickly sweet'. It has been found in the wild with isolated mutations in other colors, most notably all-white flowers, pink, and maroon. These mutations have since been selectively bred to produce different color strains that are available commercially. Image:Bluebonnets.jpg|Texas bluebonnets in bloom File:Bluebonnets Big Bend National Park.jpg|Bluebonnets in Big Bend National Park Image:Texas Bluebonnet (Lupinus texensis) field.jpg|A field of Texas bluebonnets ==References== *(Germplasm Resources Information Network: ''Lupinus texensis'' ) *(Texas Endemics: Distribution of ''Lupinus texensis'' ) *(University of Texas at Austin: ''Lupinus texensis'' ) 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「Lupinus texensis」の詳細全文を読む スポンサード リンク
|