| 词条 | Campanula exigua |
| 释义 |
|image = Campanula exigua.jpg |genus = Campanula |species = exigua |authority = Rattan }} Campanula exigua, the chaparral bellflower, rock harebell, or Rattan campanula, is an annual flower of the bluebell family. DistributionThe plant is endemic to Mount Diablo, in the northern Diablo Range within Contra Costa County, in the East Bay region of northern California. As its common name suggests, chaparral bellflower is a member of the chaparral ecosystem, growing primarily in serpentine soils at elevations of {{convert|300|-|1250|m|ft}}. It grows amongst other Mount Diablo and regional endemic plants, all dependent on natural fire ecology conditions. DescriptionCampanula exigua sends up several long stems filled with milky sap and bearing sparse, tiny leaves. At the end of each stem grows a bell-shaped bright blue-violet flower. The bloom period is May and June. External links
7 : Campanula|Endemic flora of California|Mount Diablo|Natural history of the California chaparral and woodlands|Natural history of the California Coast Ranges|Natural history of Contra Costa County, California|Endemic flora of the San Francisco Bay Area |
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