Clarkia biloba is a species of flowering plant in the evening primrose family known by the common name twolobe clarkia and two lobed clarkia.[1]
Clarkia biloba is endemic to California, where it is known from the Sierra Nevada foothills; one subspecies can also be found in the San Francisco Bay Area. It grows in chaparral, oak woodlands, and yellow pine forest habitats.[1]
As the putative progenitor species of Clarkia lingulata it is often used in examples of evolution outside the usual model of allopatric speciation.[2] As such this plant is one of the best plant examples when considering "quantum speciation," a concept closely aligned with peripatric speciation, parapatric speciation and sympatric speciation.
Clarkia biloba is an annual herb producing an erect stem approaching 1 metre (3.3 ft) in maximum height. The leaves are linear to lance-shaped and up to 6 centimeters long. Each is borne on a short petiole.
The top of the erect stem is occupied by the inflorescence, which bears hanging buds above open flowers. The pink or red-purple sepals remain fused as the petals spread and emerge from one side of the bud. The petals are up to 2.5 centimeters long and pink to lavender to magenta, sometimes flecked with red. Each petal has a two-lobed tip. There are 8 stamens, some with large lavender anthers and some with smaller, paler anthers. The stigma protrudes past the stamens.
There are three subspecies of this wildflower.
Clarkia biloba is a species of flowering plant in the evening primrose family known by the common name twolobe clarkia and two lobed clarkia.
Clarkia biloba is endemic to California, where it is known from the Sierra Nevada foothills; one subspecies can also be found in the San Francisco Bay Area. It grows in chaparral, oak woodlands, and yellow pine forest habitats.
As the putative progenitor species of Clarkia lingulata it is often used in examples of evolution outside the usual model of allopatric speciation. As such this plant is one of the best plant examples when considering "quantum speciation," a concept closely aligned with peripatric speciation, parapatric speciation and sympatric speciation.
Clarkia biloba es una especie de planta anual perteneciente a la familia Onagraceae conocida con el nombre común de "twolobe clarkia". es originaria de California,donde se encuentra desde las estribaciones de Sierra Nevada; una subespecie puede estar en el Área de la Bahía de San Francisco. Crece en el chaparral y en hábitats de bosques.
Clarkia biloba es una hierba anual con un tallo erecto que alcanza un metro de altura máxima. Las hojas son lineales a lanceoladas y de seis centímetros de largo. Cada una es llevada en un corto pecíolo. La parte superior del tallo erecto es ocupado por la inflorescencia, que lleva colgando por encima las flores abiertas. Estas tienen los sépalos de color rosa o rojo púrpura que permanecen fusionados como los pétalos. Los pétalos tienen hasta 2,5 centímetros de largo y son de color rosa a lavanda o magenta, a veces moteados de rojo. Cada pétalo tiene una punta de dos lóbulos. Tiene 8 estambres, algunos de ellos con las grandes anteras lilas y otros con pequeñas anteras más pálidas. El estigma sobresale más allá de los estambres.
Hay tres subespecies de esta flor silvestre. La más rara, el Clarkia biloba (ssp. australis), es conocida sólo en río Merced, en las estribaciones de la Sierra, donde se ve amenazada por el mantenimiento de carreteras y por las plantas invasoras.
Clarkia biloba es una especie de planta anual perteneciente a la familia Onagraceae conocida con el nombre común de "twolobe clarkia". es originaria de California,donde se encuentra desde las estribaciones de Sierra Nevada; una subespecie puede estar en el Área de la Bahía de San Francisco. Crece en el chaparral y en hábitats de bosques.
Clarkia biloba là một loài thực vật có hoa trong họ Anh thảo chiều. Loài này được (Durand) A.Nelson & J.F.Macbr. mô tả khoa học đầu tiên năm 1918.[1]
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Bài viết về họ Anh thảo chiều này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn. Clarkia biloba là một loài thực vật có hoa trong họ Anh thảo chiều. Loài này được (Durand) A.Nelson & J.F.Macbr. mô tả khoa học đầu tiên năm 1918.
