Hieracium

Problem species include Hieracium spp., briar (Rosa rubiginosa), and conifers (e.g. Pinus contorta).

Richmond temperate forests 2008

About 3,500 vascular plant species are recorded from the mountains, of which about 200 are endemic, such as Thalictrum macrocarpum, Androsace hirtella, Saxifraga hariotii, Hieracium compositum, Gentiana burseri, Globularia gracilis, and Galium caespitosum.

Pyrenees conifer and mixed forests 2008

Pinus contorta and hawkweeds (Hieracium spp.) are a problem in the tussock grasslands of the volcanic plateau and higher reaches of the axial ranges.

Northland temperate forests 2008

And when the abbot began shrugging his shoulders and raising his hands in gentle frustration, Joseph understood he was talking about his more recent encounters in the garden, with a plant that seemed to defy all his theories about heredity—the orange hawkweed, or Hieracium.

Day of the Dandelion Peter Pringle 2007

(Hieracium pilosella/Mouse-ear hawkweed.) THE MOUSE-EAR HAWKWEED tolerates soil that is nutrient-poor and is drought tolerant.

Botanical Guide to BorderXing: 10 Topographical Investigations, Part VIII 2005

I have an idea about the strange behavior of Hieracium.

Day of the Dandelion Peter Pringle 2007

Dense mats of hawkweeds (e.g. Hieracium pilosella) tend to take over in heavily grazed short-tussock grasslands, preventing any regeneration of native species.

Cantebury-Otago tussock grasslands 2007

I cannot resist remarking how striking it is that the hybrids of Hieracium behaved exactly the opposite to those of Pisum.

Day of the Dandelion Peter Pringle 2007

It appears that the seed of Hieracium can be made by the plant without fertilization.

Day of the Dandelion Peter Pringle 2007

Prof. Hincks [14] cites cases of this kind in _Primula vulgaris_, _Hieracium aureum_, and _Ranunculus bulbosus_.

Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants Maxwell T. Masters