| 词条 | Hieracium robinsonii |
| 释义 |
| image = | genus = Hieracium | species = robinsonii | authority = (Zahl) Fernald 1943 | synonyms_ref = [1] | synonyms = *Hieracium smolandicum subsp. robinsonii Zahl 1921
}}Hieracium robinsonii, or Robinson's hawkweed,[2] is a North American plant species in the dandelion tribe within the sunflower family. It is native to eastern Canada and the northeastern United States (Québec, New Brunswick, Nova Scotia, Maine, and New Hampshire). There are reports of it formerly growing in Newfoundland, but it does not appear to grow there now.[3]Hieracium robinsonii is an herb up to {{convert|35|cm|in|abbr=on}} tall with star-shaped hairs, with leaves both on the stem and in a rosette at the bottom. Leaves are up to {{convert|80|mm|in|abbr=on}} long, with no or only a few hairs on the upper surface and more dense hairs on the underside. One stalk can produce 1–10 flower heads in a flat-topped array. Each head has 30–50 yellow ray flowers but no disc flowers.[4] References1. ^The Plant List, Hieracium robinsonii (Zahn) Fernald {{Taxonbar|from=Q15578859}}{{Cichorieae-stub}}2. ^{{PLANTS|id=HIRO4|taxon=Hieracium robinsonii|accessdate=23 July 2015}} 3. ^Biota of North America Program 2014 county distribution map 4. ^Flora of North America, Hieracium robinsonii (Zahn) Fernald, 1943. 4 : Hieracium|Flora of Canada|Flora of the Northeastern United States|Plants described in 1921 |
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