Cercidiphyllum
Cercidiphyllum is a genus containing two species of plants, both commonly called katsura. They are the sole members of the monotypic family Cercidiphyllaceae. The genus is native to Japan and China and unrelated to Cercis (redbuds).
Species
GENUS
- KingdomPlantae
- PhylumTracheophyta
- ClassMagnoliopsida
- OrderSaxifragales
- FamilyCercidiphyllaceae
Native toChina North-Central, China South-Central, China Southeast, Japan
属 参见正文 老树 连香树科只有一属—连香树属 （Cercidiphyllum Siebold & Zucc.）共两种—都叫连香树（C. magnificum和C. japonicum）,是第三纪的孑遗植物，只生长在中国陕西南部、河南、山西、湖北西部、湖南、安徽、江西、四川北部和浙江东部。以及日本的本州和北海道。是中国国家重点保护植物。 C. japonicum有40-50米高，树皮粗糙，叶长4.5厘米宽3.2厘米，种子一边有翅。C. magnificum生长地势较高，树型较矮，不超过20米高，叶大，有8厘米长，5.5厘米宽，种子两面都有翅。 连香树春季嫩叶紫色，在秋季树叶颜色变鲜艳，由于不同的温度变化会变成红色、黄色、粉红色等不同颜色，叶含麦芽醇，并会散发出一种焦糖香味，可以加工提取香味增强剂。木材结构细致，质地坚硬。花先叶开放，紫色，单性，雌雄异株；连香树生长速度很快，但不耐旱，如果缺水会落叶，补充水分后可以重新生长出叶子。有几种被培育出的枝叶下垂的园艺变种。 由于连香树的叶形和紫荆相似，所以也被称为“紫荆叶”，又名“山白果”、“云义树”，以前的分类法将其和紫荆一起划入苏木科，但紫荆叶为互生，连香树叶为对生。1998年根据基因亲缘关系分类的APG 分类法将连香树单独分为一科，属于虎耳草目。 连香树是优美的绿化和园林观赏品种，由于其树皮具耐火能力，也可用于防火隔离带栽植。 参考文献 Andrews, S. (1998). Tree of the Year: Cercidiphyllum. International Dendrology Society Yearbook 1997: 17-46. Dosmann, M. S. (1999). Katsura: A review of Cercidiphyllum in cultivation and in the wild. The New Plantsman 6: 52-62. Dosmann, M. S., Andrews, S. K., Del Tredici, P., & Li, J. (2003). Classification and nomenclature of weeping katsuras. The Plantsman N.S. 2: 21-27. Dosmann, M. S., Iles, J. K., & Graves, W.R. (1999). Drought avoidance in katsura by drought-induced leaf abscission and rapid refoliation. HortScience 34: 871-874. 连香树叶 取自“https://zh.wikipedia.org/w/index.php?t
via GBIF · Kew POWO
Article
10 sectionsContents
- Description
- Nomenclature
- Species
- Cultivation
- Uses
- Fossil record
- Gallery
- References
- Sources
- External links
Cercidiphyllum is a genus containing two species of plants, both commonly called katsura. They are the sole members of the monotypic family Cercidiphyllaceae. The genus is native to Japan and China and unrelated to Cercis (redbuds).
==Description== The type species, Cercidiphyllum japonicum, can reach in height, and is one of the largest hardwoods in Asia. The other species, Cercidiphyllum magnificum, is much smaller, rarely reaching over in height. Cercidiphyllum produces spurs along its twigs. These are short stems with closely spaced leaves. The foliage is dimorphic. According to a recent description "short shoots bear broadly cordate or reniform, palmately veined leaves with crenate margins; long shoots bear elliptic to broadly ovate leaves with entire or finely serrate margins." Leaf size varies from 3 to 8 cm long and 3–5.5 cm broad. The genus is dioecious, having separate male and female trees. The small inconspicuous flowers are produced in early spring and wind-pollinated; the fruit is a cluster of 2-4 small pods, each pod 1–2 cm long with numerous small, flattened and winged seeds. The fruits mature in autumn and release their seeds in autumn through winter.