| Hieracium caesiomurorum | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Tribe: | Cichorieae |
| Genus: | Hieracium |
| Species: | H. caesiomurorum |
| Binomial name | |
| Hieracium caesiomurorum Stenstr. | |
Hieracium caesiomurorum is a species of flowering plant belonging to the family Asteraceae. [1] [2]
Hieracium , known by the common name hawkweed and classically as hierakion, is a genus of the sunflower (Helianthus) family Asteraceae), and closely related to dandelion (Taraxacum), chicory (Cichorium), prickly lettuce (Lactuca) and sow thistle (Sonchus), which are part of the tribe Cichorieae. Hawkweeds, with their 10,000+ recorded species and subspecies, do their part to make Asteraceae the second largest family of flowers. Some botanists group all these species or subspecies into approximately 800 accepted species, while others prefer to accept several thousand species. Since most hawkweeds reproduce exclusively asexually by means of seeds that are genetically identical to their mother plant, clones or populations that consist of genetically identical plants are formed and some botanists prefer to accept these clones as good species whereas others try to group them into a few hundred more broadly defined species. What is here treated as the single genus Hieracium is now treated by most European experts as two different genera, Hieracium and Pilosella, with species such as Hieracium pilosella, Hieracium floribundum and Hieracium aurantiacum referred to the latter genus. Many members of the genus Pilosella reproduce both by stolons and by seeds, whereas true Hieracium species reproduce only by seeds. In Pilosella, many individual plants are capable of forming both normal sexual and asexual (apomictic) seeds, whereas individual plants of Hieracium only produce one kind of seeds. Another difference is that all species of Pilosella have leaves with smooth (entire) margins whereas most species of Hieracium have distinctly dentate to deeply cut or divided leaves.
A dry roadside dotted with small, ¾ inch red orange flowers, interspersed with very similar yellow ones, and often the white of daisies, is a good sign that you are in Hawkweed country.
Hieracium umbellatum, the Canadian hawkweed, Canada hawkweed, narrowleaf hawkweed, or northern hawkweed, is a flowering plant in the daisy family Asteraceae.
Hieracium lachenalii, also known as common hawkweed or yellow hawkweed, is a species of plant in the dandelion tribe within the sunflower family. It is native to Europe but has become established as a weed in Australia and parts of North America. The species was widely known for many years as H. vulgatum, but more recent studies have indicated that the two names represent the same species. The name H. lachenalii was coined in 1802, H. vulgatum in 1819, so the older name is to be used.
Hieracium bolanderi or Bolander's hawkweed is a North American plant species in the dandelion tribe within the sunflower family. It is found primarily in the mountains of western Oregon and northern California in the United States, although there are reports of the species farther south in the San Bernardino Mountains in southern California and also in Baja California in Mexico.
Hieracium megacephalum, the coastal plain hawkweed, is a North American plant species in the dandelion tribe within the sunflower family. It grows only in the southeastern United States, in Georgia, Florida, and the Carolinas.
Hieracium triangulare is a species of flowering plant belonging to the family Asteraceae.
Hieracium subpellucidum is a species of flowering plant belonging to the family Asteraceae.
Hieracium subcaesium is a species of flowering plant belonging to the family Asteraceae.
Hieracium reticulatum is a species of flowering plant belonging to the family Asteraceae.
Hieracium bifidum is a species of flowering plant belonging to the family Asteraceae.
Hieracium philanthrax is a species of flowering plant belonging to the family Asteraceae.
Hieracium penduliforme is a species of flowering plant belonging to the family Asteraceae.
Hieracium pellucidum is a species of flowering plant belonging to the family Asteraceae.
Hieracium prolatatum is a species of flowering plant belonging to the family Asteraceae.
Hieracium lepistoides is a species of flowering plant belonging to the family Asteraceae.
Hieracium laeticolor is a species of flowering plant belonging to the family Asteraceae.
Hieracium hjeltii is a species of flowering plant belonging to the family Asteraceae.
Hieracium coronarium is a species of flowering plant belonging to the family Asteraceae.
Hieracium crispulum is a species of flowering plant belonging to the family Asteraceae.
Hieracium senescens is a species of flowering plant belonging to the family Asteraceae.