head with disk flowers just beginning to open--do you see why the common name of this plant is... head with disk flowers just beginning to open--do you see why the common name of this plant is... Family - Asteraceae Stems - To -2m tall multiple from base herbaceous erect branching above... Family - Asteraceae Stems - To -2m tall, multiple from base, herbaceous, erect, branching above,... Involucre (rays removed). Ray flowers - Sterile. Typically 6 yellow or with brownish-purple and... Involucre (rays removed). Ray flowers - Sterile. Typically 6, yellow or with brownish-purple and... individuals of Ratibida columnifera can have one of two basic ray corolla colors: brown... individuals of Ratibida columnifera can have one of two basic ray corolla colors: brown... Family - Asteraceae Stems - To -1m tall erect multiple from base simple to branching above... Family - Asteraceae Stems - To -1m tall, erect, multiple from base, simple to branching above,... 27.07.2008 copyright © by Jacek Soboń 27.07.2008 copyright © by Jacek Soboń Inflorescence - Single flower head terminating stem. Peduncle naked to +20cm long antrorse... Inflorescence - Single flower head terminating stem. Peduncle naked, to +20cm long, antrorse... Inflorescence - Single flower heads from long(+/-20cm) naked peduncles. Involucre - Phyllaries... Inflorescence - Single flower heads from long(+/-20cm) naked peduncles. Involucre - Phyllaries... Ratibida columnifera (Nutt.) Woot. & Standl. Autor : Petr Vobořil [ Další fotografie od tohoto... Ratibida columnifera (Nutt.) Woot. & Standl. Autor : Petr Vobořil [ Další fotografie od tohoto... Flowering - May - September. Habitat - Prairies thickets woodland edges streambanks railroads.... Flowering - May - September. Habitat - Prairies, thickets, woodland edges, streambanks, railroads.... Show Larger Picture Show Larger Picture Use the back key of your browser to come back to the previous display. © 1998-2001 Philippe Faucon... Use the back key of your browser to come back to the previous display. © 1998-2001 Philippe Faucon,... Involucre. Ray flowers - Flowers typically 10 in number. Ligule yellow +/-6cm long to 1.5cm broad... Involucre. Ray flowers - Flowers typically 10 in number. Ligule yellow, +/-6cm long, to 1.5cm broad,... Disk close-up. Flowering - June - September. Habitat - Prairies waste ground disturbed sites... Disk close-up. Flowering - June - September. Habitat - Prairies, waste ground, disturbed sites,... another view of the head --in this inflorescence none of the disk flowers have opened yet another view of the head --in this inflorescence, none of the disk flowers have opened yet Disk flowers - Fertile. Corolla 5-lobed purple. Tube to 1.8mm long glabrous. Achenes white in... Disk flowers - Fertile. Corolla 5-lobed, purple. Tube to 1.8mm long, glabrous. Achenes white in... Leaves - Alternate deeply pinnatifid petiolate below sessile above to +10cm long +5cm broad... Leaves - Alternate, deeply pinnatifid, petiolate below, sessile above, to +10cm long, +5cm broad,... Ratibida columnifera (Nutt.) Woot. & Standl. Autor : Petr Vobořil [ Další fotografie od tohoto... Ratibida columnifera (Nutt.) Woot. & Standl. Autor : Petr Vobořil [ Další fotografie od tohoto... Leaves - Alternate sessile pinnatifid to pinnately divided +/-18cm long scabrous hirsute on... Leaves - Alternate, sessile, pinnatifid to pinnately divided, +/-18cm long, scabrous, hirsute on... Ratibida columnifera (Nutt.) Woot. & Standl. Autor : Petr Vobořil [ Další fotografie od tohoto... Ratibida columnifera (Nutt.) Woot. & Standl. Autor : Petr Vobořil [ Další fotografie od tohoto... Disk flowers - Fertile. Corolla 5-lobed purple. Tube to 1.8mm long glabrous. Achenes white in... Disk flowers - Fertile. Corolla 5-lobed, purple. Tube to 1.8mm long, glabrous. Achenes white in... Ratibida columnifera (Nutt.) Woot. & Standl. Autor : Petr Vobořil [ Další fotografie od tohoto... Ratibida columnifera (Nutt.) Woot. & Standl. Autor : Petr Vobořil [ Další fotografie od tohoto... ...or yellow! They belong to the same species despite the difference. ...or yellow! They belong to the same species, despite the difference. Inflorescence - Single flower head terminating stem. Peduncle naked to +20cm long antrorse... Inflorescence - Single flower head terminating stem. Peduncle naked, to +20cm long, antrorse... beautiful wildflowers . Some are remnants of the pre-settlement days when Greene County was covered... beautiful wildflowers . Some are remnants of the pre-settlement days when Greene County was covered... Cultural Practices: Cut dormant plants to the ground in winter. Blooming Habits: The Mexican hat... Cultural Practices: Cut dormant plants to the ground in winter. Blooming Habits: The Mexican hat... A cauline leaf in Las Cruces 9/5/05. Go back to: SW Plants The main index A cauline leaf in Las Cruces, 9/5/05. Go back to: SW Plants The main index Old receptacles that have lost most of their achenes in Las Cruces 9/5/05. Old receptacles that have lost most of their achenes, in Las Cruces, 9/5/05.
Próxima »
Pesquisa Avançada