Varieties 3 (3 in the flora): sw United States, nw Mexico.
Isocoma acradenia is a North American species of flowering plant in the family Asteraceae known by the common name alkali goldenbush.
It is native to the Southwestern United States (California, Nevada, Utah, Arizona) and northwestern Mexico (Sonora, Baja California). It grows in arid, sandy areas, particularly mineral-rich areas such as alkali flats and gypsum soils.[2][3][4][5][6]
Isocoma acradenia is a bushy subshrub reaching maximum heights of slightly over 1 m (39 in). It produces erect, branching stems which are a shiny pale yellowish white, aging to a yellow-gray.[7]
Along the tough, hard-surfaced stems are linear or oval-shaped glandular leaves 1–6 cm (0.39–2.36 in) long, sometimes with stumpy teeth along the edges. They are gray-green and age to pale gray or tan.[7]
The inflorescences along the top parts of the stem branches are clusters of four or five flower heads.[8] Each head is a capsule encased in bumpy, glandular greenish phyllaries bearing many golden yellow disc florets at its mouth. Each disc floret is somewhat cylindrical and protruding.[7]
The fruit is an achene a few millimeters long, with a yellowish pappus adding another few millimeters.[7]
Isocoma acradenia is a North American species of flowering plant in the family Asteraceae known by the common name alkali goldenbush.
It is native to the Southwestern United States (California, Nevada, Utah, Arizona) and northwestern Mexico (Sonora, Baja California). It grows in arid, sandy areas, particularly mineral-rich areas such as alkali flats and gypsum soils.
Isocoma acradenia es una especie de planta fanerógama perteneciente a la familia Asteraceae.
Es originaria del suroeste de los Estados Unidos, California, y Baja California. Crece en zonas arenosas, áridas, zonas especialmente ricas en minerales tales como pisos alcalinos y suelos de yeso. (C.Michael Hogan. 2010)
Isocoma acradenia es un subarbusto tupido que puede alcanzar alturas máximas de poco más de un metro. Produce tallos erectos ramificados que son un de un brillante pálido color blanco amarillento, al envejecimiento torna a un color amarillo-gris. A lo largo del duro tallo se disponen las hojas glandulares lineales o de forma ovalada de 1-6 centímetros de largo, a veces con dientes rechonchos a lo largo de los bordes. Son de color gris-verde y con la edad a gris pálido o marrón. Las inflorescencias en las partes superiores de las ramas troncales son grupos de cuatro o cinco cabezas de las flores. Cada cabeza es una cápsula encerrada con muchos floretes del disco de color oro amarillo. Cada flósculo del disco es algo cilíndrico y que sobresale. El fruto es un aquenio unos pocos milímetros de longitud, con un vilano de color amarillento que añade unos cuantos milímetros.
Isocoma veneta fue descrita por (Kunth), Greene y publicado en Erythea 2(7): 111. 1894.[1]
Isocoma: nombre genérico que deriva del griego y significa "un mechón de pelos iguales", en referencia a las flores.[2]
acradenia: epíteto derivado del griego que significa "punta glandular", en referencia a que cada una de las brácteas involucrales tienen una glándula grande en su punta.[3]
Isocoma acradenia es una especie de planta fanerógama perteneciente a la familia Asteraceae.
Isocoma acradenia là một loài thực vật có hoa trong họ Cúc. Loài này được (Greene) Greene mô tả khoa học đầu tiên năm 1894.[1]
Isocoma acradenia là một loài thực vật có hoa trong họ Cúc. Loài này được (Greene) Greene mô tả khoa học đầu tiên năm 1894.
