الأسماء في صفحات التنقل
Calycadenia is a genus of flowering plants in the family Asteraceae,[1][2] known commonly as the western rosinweeds.[3] They are native to California, especially around the Central Valley.[4] The ranges of two species (C. fremontii + C. truncata) do extend north into Oregon.[5][6]
These are annual herbs variable in size from just a few centimeters tall to well over one meter. They are aromatic. The leaves are alternately arranged except in C. oppositifolia, in which they are opposite. The leaves are narrow and linear in shape, resembling grass leaves. They sometimes have slightly toothed edges. Flower heads are solitary or borne in open arrays or clusters in the leaf axils. The peduncles that hold the flower heads have bracts with one or more tack-shaped glands. The head usually has one or more phyllaries stuck to the ray florets; these often have similar tack-shaped glands. There are one to six ray florets on the head, each with 3 lobes at the tip. They are white, cream, pink, or yellow, and some have a dark red spot near the base. There are up to 25 disc florets in shades of white, cream, pink, or yellow, with anthers that are usually purple or black, sometimes yellow or brown. The fruit is an angular cypsela. Fruits from the disc flowers usually have pappi made up of several scales.[4][5][7]
The gland-dotted bracts on the peduncles are a distinguishing character of the genus.[4] The name Calycadenia comes from the Greek calyx ("cup") and aden ("gland"), and references the tack-shaped glands on these bracts and the phyllaries.[7]
Most of the species are self-incompatible.[7] The biology of the genus is variable; several species have races that differ in chromosome count but not much in morphology, while several others have races that are different in morphology but all have the same chromosome count.[7]
Calycadenia is a genus of flowering plants in the family Asteraceae, known commonly as the western rosinweeds. They are native to California, especially around the Central Valley. The ranges of two species (C. fremontii + C. truncata) do extend north into Oregon.
Calycadenia es un género de plantas perteneciente a la familia Asteraceae. Se encuentran en el oeste de EE. UU., donde seis de ellas son endémicas del Valle Central de California. Algunas especies son bastante raras. Las plantas son pequeñas, anuales con numerosas inflorescencias de pequeñas flores radiales que pueden ser de color blanco, amarillo o rosado.
Comprende 21 especies descritas y de estas, solo 10 aceptadas.[1][2]
El género fue descrito por Augustin Pyrame de Candolle y publicado en Prodromus Systematis Naturalis Regni Vegetabilis 5: 695. 1836.[3]
Calycadenia: nombre genérico que proviene de las palabras griego calyx = "copa", y aden, "glándula", en alusión a la forma de las glándulas de las brácteas.[4]
A continuación se brinda un listado de las especies del género Calycadenia aceptadas hasta julio de 2012, ordenadas alfabéticamente. Para cada una se indica el nombre binomial seguido del autor, abreviado según las convenciones y usos.
Calycadenia es un género de plantas perteneciente a la familia Asteraceae. Se encuentran en el oeste de EE. UU., donde seis de ellas son endémicas del Valle Central de California. Algunas especies son bastante raras. Las plantas son pequeñas, anuales con numerosas inflorescencias de pequeñas flores radiales que pueden ser de color blanco, amarillo o rosado.
Comprende 21 especies descritas y de estas, solo 10 aceptadas.
Calycadenia DC. è un genere di piante della famiglia delle Asteracee, diffuso negli Stati Uniti occidentali e nel Messico.
La classificazione tradizionale colloca il genere Calycadenia nella sottotribù Madiinae della tribù Heliantheae.[1]
Recenti studi filogenetici considerano le Madiinae come il principale raggruppamento delle Madieae, elevate al rango di tribù a sé stante.[2][3]
Il genere Calycadenia comprende 10 specie:[4]
Calycadenia DC. è un genere di piante della famiglia delle Asteracee, diffuso negli Stati Uniti occidentali e nel Messico.
Calycadenia é um género botânico pertencente à família Asteraceae.[1]
Calycadenia é um género botânico pertencente à família Asteraceae.
Calycadenia este un gen de plante din familia Asteraceae, ordinul Asterales.
Calycadenia là một chi thực vật có hoa trong họ Cúc (Asteraceae).[1]
Chi Calycadenia gồm các loài:
Calycadenia là một chi thực vật có hoa trong họ Cúc (Asteraceae).
