| 词条 | Hieracium megacephalum |
| 释义 |
| image = | genus = Hieracium | species = megacephalum | authority = Nash 1895 | synonyms_ref = [1][2] | synonyms = Hieracium megacephalon Nash }}Hieracium megacephalum, the coastal plain hawkweed,[3] 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.[4]Hieracium megacephalum is an herb up to {{convert|40|cm|in|abbr=on}} tall, with leaves on the stem and also in a rosette at the bottom. Leaves are up to {{convert|120|mm|in|abbr=on}} long, sometimes with teeth on the edges. One stalk can produce as many as 50 flower heads in a flat-topped array. Each head has 20–50 yellow ray flowers but no disc flowers.[5] References1. ^Tropicos, Hieracium megacephalum Nash {{Taxonbar|from=Q15572760}}{{Cichorieae-stub}}2. ^The Plant List, Hieracium megacephalum Nash 3. ^{{PLANTS|id=HIME|taxon=Hieracium megacephalon|accessdate=23 July 2015}} 4. ^Biota of North America Program 2004 county distribution map 5. ^Flora of North America, Hieracium megacephalon Nash, 1895. 3 : Hieracium|Flora of the Southeastern United States|Plants described in 1895 |
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