| 词条 | Pellaea truncata |
| 释义 |
| image = Pellaea truncata 3.jpg | status = G5 | status_system = TNC | regnum = Plantae | divisio = Pteridophyta | classis = Polypodiopsida | ordo = Polypodiales | familia = Pteridaceae | genus = Pellaea | species = P. truncata | binomial = Pellaea truncata | binomial_authority = Goodding }} Pellaea truncata is a species of fern known by the common name spiny cliffbrake. It is native to the southwestern United States and northern Mexico, where it grows in rocky areas, such as cliffs and slopes. DescriptionThe Pellaea truncata leaves are up to 40 centimeters long, the fertile leaves longer and more subdivided than the smaller, simpler sterile leaves. The leaf is composed of several leaflets which are each divided into several linear to oblong or pointed oval segments. The segments may have wavy edges, and the fertile ones have their edges rolled under. The sporangia are located under the edges. External links
7 : Pellaea|Ferns of California|Ferns of the United States|Flora of Northwestern Mexico|Flora of the Southwestern United States|Flora of Arizona|Flora of New Mexico |
| 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。