| 词条 | Oreostemma peirsonii |
| 释义 |
|regnum = Plantae |unranked_divisio = Angiosperms |unranked_classis = Eudicots |unranked_ordo = Asterids |ordo = Asterales |familia = Asteraceae |tribus = Astereae |genus = Oreostemma |species = O. peirsonii |binomial = Oreostemma peirsonii |binomial_authority = (Sharsm.) G.L.Nesom |synonyms = Aster peirsonii |}} Oreostemma peirsonii (formerly Aster peirsonii) is a species of aster known by the common names Peirson's aster and Peirson's mountaincrown. It is endemic to the Sierra Nevada of California, especially around the area where Fresno, Tulare, and Inyo Counties meet. It is a plant of the alpine climate of the high mountain peaks. DescriptionOreostemma peirsonii is a small perennial herb growing from a caudex and taproot. It lies flat on the ground, growing no taller than about 8 centimeters. The leaves are located at the base of the plant and are linear in shape and narrow, growing a few centimeters long. The stem and leaves are mostly hairless and have scattered resin glands. The inflorescence bears a single flower head lined with green or purplish phyllaries. The head contains many purple ray florets between 1 and 2 centimeters long around a center of yellow disc florets. The fruit is an achene. External links
3 : Astereae|Endemic flora of California|Flora of the Sierra Nevada (U.S.) |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。