还说树和花 5/31/2007 09:43
今早出门前看见窗外的屋顶湿漉漉的。没有打伞,只需要几分钟就可以到办公室,毕竟淋点雨是一件感觉不错的事。

昨晚去植物园,偶遇一颗从来没注意到的伞状玉兰(umbrella magnolia)正在开放。叶子和一般玉兰树的叶子比奇大,呈平面伞状。花朵也大为白色,长在平面上的正中间。这是我去植物园第一次发现这棵树。

在门口闻到了槐花的香味,走进去二百米处,有11棵槐树同时结满了槐花。这也是我这些年第一次见到这么多槐树同时开花。这些槐树是中国槐。 有恋乡者可以一去。

在门口有一颗很小树的新叶子为深红色,长出时间长了叶子变为绿色。叫做Katsura tree, 来自日本。

This tree offers a range of colors over the entire year that is second to none. The leaves of this tree emerge, not green, but a beautiful reddish purple. Then as the season progresses the leaves turn dark bluish green. In the fall things get exciting. The fall color of this tree varies from an intense yellow. In some cases, however, they turn a gorgeous apricot orange that is quite memorable. To add to the autumn pizzazz, as the leaves fall they give off a modestly spicy odor making you think of cotton candy. But the performance is not over. Once bereft of leaves, Katsuratree bark takes over the show with a beautiful pattern of slight exfoliation and medium gray color that is generally very handsome.

you can read more here:
http://www.yardener.com/KatsuraTree.html

玫瑰园里的单瓣玫瑰和复瓣玫瑰都开了。想问安妮MM月季和玫瑰的区别。
玫瑰园的周围有几株开着白色小花紧促的树丛,叫做spirea - 绣线菊, 也是探险家Henry Wilson一百年前从中国发现带回来的。

另外,虽然许多几周前开放的杜鹃已经谢了,仍发现又有好几种新的主要是杂交品种的杜鹃正在开。 花朵一或更大一点点,或者比较小。

丁香的旺季过了,不过还有几株新开放的。在丁香丛中有一颗树开着紫色的花丛远处看很像一株丁香,可是开的这般旺盛,不由得好奇走到近处发现是一颗 paulownia tree (桐树). Here has photos and a personal story of the tree. http://www.fast-growing-trees.com/PaulowniaT.htm ( Annie MM 也开一个园丁日记栏目)。

出奇的遇到一只鹿在草丛里吃草,据说来自周围的林子。当然还有林间叫的小鸟,地上跑的小狗,玫瑰园草丛里的一只小兔子,只有鸟那么大。还遇到几个叫做‘熟人’的小动物。 wink

垂樱的花早早谢了,叶子已经很浓密并长了小绿果。好奇樱花树和樱桃到底有关系吗?现在要工作了,等着Annie MM或知道的人来回答吧。


rose
无论月季还是玫瑰,英文都是rose,都是蔷薇科植物, 在亲缘关系上还是较近的。月季与玫瑰的主要区别如下:

(1)月季叶少, 3-5片,而玫瑰5-9片。

(2)月季刺少,玫瑰刺多。

(3)月季叶泛亮光, 玫瑰叶无亮光。

(4)月季花较大,颜色多样;玫瑰花较小,一般为 粉红色。第二种玫瑰花稍大,但呈扁平盘形,容易与月季区分开来。


ZT:玫瑰与月季是同科同属不同种的姊妹花,其共同点是:均为蔷薇科蔷薇属植物;落叶或半落叶灌木,茎直立或攀缘,通常有刺;叶互生,奇数羽状复叶,有托叶;花单生或成伞房花序;萼片及单瓣花瓣各五数,重瓣花瓣多数;雄蕊多数,雌蕊多数包于壶状花托内,花托成熟变肉质,内含多数或少数骨质瘦果。外观形态上的相似,使人们常把两者张冠李戴,混淆不清。许多人把玫瑰和带有香味的月季混为一谈,其实不同的种有很大的区别。
  一、形态特征
  1、花的区别。⑴花的颜色:玫瑰有紫红、粉红和白等色;月季花色繁多;有白、红、粉、紫、黄和绿等色,各色有深浅之分,有的还具条纹及斑点或复色,可谓五彩缤纷。
  ⑵花型:花朵都有单瓣、重瓣和半重瓣之分,但花朵大小形状不同。玫瑰花全开后呈扁平盘形,花径一般为6-8厘米,最大的10厘米,花单生或数朵聚生于叶腋,花短梗,有刺,花托平滑。而月季花朵的大小变化多端,小花径只有2-3厘米,大花径有10-20厘米;瓣型多样,有尖瓣、反卷瓣、甘蓝叶状瓣等;花一般为单花顶生,也有数朵簇生的,少数集成松散的伞房花序,花柄长,且近无刺。
  ⑶花柱:玫瑰花柱连合成头状,塞于花托之口;月季花柱离生,伸出于花托口外甚长。
  ⑷花萼:花萼都为5片。玫瑰的花萼多为瓣状,花开放时,花萼与花同时开展;月季花尚未开放时,萼片先张开,花开放时,萼片反卷,通常羽状。
  ⑸花的寿命:单朵的玫瑰花寿命一般为1天,最多是2天,通常是早晨开放,傍晚就凋谢了;而月季花的寿命短的3-5天,长的达7-10天。
  2、叶的区别。玫瑰由7-9枚小叶组成羽状复叶,小叶椭圆形或长椭圆形状倒卵形,先端急尖或圆钝,边缘有钝锯齿,叶长2-5厘米,表面绿色,无毛,无光泽,叶脉凹陷而皱缩,背面稍有白粉及柔毛;叶柄有绒毛及刺,托叶为叶片长之半。月季的叶由3-5枚小叶组成羽状复叶,小叶阔卵形或卵状长圆形,先端有尖,边缘有锯齿,长2.5-6厘米,两面都无毛,表面绿色,平展,光滑,无皱缩,有光泽,叶柄有刺或无刺;托叶为叶柄长的三分之一。
  3、茎的区别。玫瑰茎直立丛生,嫩茎绿色,翌年变棕红色,老茎灰褐色附有灰白粉状物,茎基部有粗大皮刺和尖细而密集的小刺;三年生以上的茎基部粗大皮刺脱落,茎上均为粗大皮刺;枝条健壮,高约2米,密生针刺和刚毛,小枝则密生绒毛。月季茎直立,有的品种枝条较长似蔓生。嫩茎绿色,稍有红晕,有的呈紫红色,有刺或无刺,均无毛,皮刺钩状,分散而少,老枝灰褐色,皮刺脱落。
  4、果的区别。玫瑰的果实扁球形,绿色,成熟后呈橘红色;月季的果实为圆球形,较大,绿色,成熟后为橘黄色。
  5、根的区别。玫瑰和月季的主根均不发育,支根和须根发达,玫瑰的横走根能生根蘖,用以繁殖新株。月季不发生根蘖。
  二、用途
  玫瑰香气浓郁,常大面积栽培,其花蕾是名贵的中药材,烘干后入药,也是玫瑰茶的主原料;鲜花用于提取玫瑰油,进行高级香水、化妆品、香烟的调香,也用来制作玫瑰酱作为食品调味剂和蒸酒等。月季因种类繁多且月月季季开花不败,其用途非常广泛,常用园林绿化,庭院美化及家庭装饰,此外,其切花常当作礼仪花卉使用,广泛地用于各种社交场合。
cwood at 5/31/2007 14:53 快速引用
Thank you, cwood. rose

Are cherries from cherry trees?

http://en.wikipedia.org/wiki/Cherry

From Wikipedia, the free encyclopedia

Cherry


Cherries (sweet, edible parts)
Nutritional value per 100 g (3.5 oz)
Energy 60 kcal 260 kJ
Carbohydrates 16 g
- Sugars 13 g
- Dietary fibre 2 g
Fat 0.2 g
Protein 1.1 g
Vitamin C 7 mg 12%
Iron 0.4 mg 3%

Percentages are relative to US
recommendations for adults.
Source: USDA Nutrient database

The word cherry refers to both the tree and the fleshy fruit that consists of enclosing a single hard stone seed, otherwise known as a drupe. The cherry belongs to the family Rosaceae, genus Prunus, along with almonds, peaches, plums, apricots and bird cherries. The subgenus, Cerasus, is distinguished by having the flowers in small corymbs of several together (not singly, nor in racemes), and by having a smooth fruit with only a weak groove or none along one side. The subgenus is native to the temperate regions of the Northern Hemisphere, with two species in North America, three in Europe, and the remainder in Asia. The word "cherry" comes from the French word "cerise," which comes in turn from the Latin words cerasum and Cerasus (the Classical name of the modern city of Giresun in Turkey).

The cherries selected for eating are derived primarily from two species, the Wild Cherry (P. avium), which has given rise to the Sweet Cherry to which most cherry cultivars belong, and the Sour Cherry (P. cerasus), used mainly for cooking and jam making. Both species originate in Europe and western Asia; they do not cross-pollinate each other. The other species, although having edible fruit, are not grown extensively for consumption, except in northern regions where the two main species will not grow. Given the high costs of production, from irrigation, sprays and labour costs, in addition to their proneness to damage from rain and hail, the cherry is relatively expensive. Nonetheless, there is high demand for the fruit.

Major commercial cherry orchards in Europe extend from the Iberian peninsula east to Asia Minor; they are also grown to a smaller extent north of the British Isles and southern Scandinavia. In the United States, most sweet cherries for fresh use are grown in California and Washington. Important sweet cherry cultivars include 'Bing', 'Brooks', 'Tulare', 'King', and 'Rainier'. Oregon and Michigan provide light-coloured 'Royal Ann' ('Napoleon'; alternately 'Queen Anne') cherries for the maraschino cherry process. Most sour cherries are grown in four states bordering the Great Lakes, in Michigan, New York, Pennsylvania, and Wisconsin, however, native and non-native cherries grow well in Canada as well. Sour cherries include Nanking and Evans Cherry. Traverse City, Michigan claims to be the "Cherry Capital of the World", hosting a National Cherry Festival and making the world's largest cherry pie. Likewise in Australia the New South Wales town of Young is famous nationwide as the "Cherry Capital of Australia", and also host The National Cherry Festival which is famous internationally. From this town alone millions of tons of cherries are exported worldwide to Asia, Europe and North America given that, they are produced during the northern hemisphere's winter (off season). Popular varieties include the 'Montmorency', 'Morello', 'North Star', 'Early Richmond', 'Titans', 'Lamberts' and the very sweet and highly demanded 'Ron'.

Cherries have a very short fruiting season. In Australia they are usually at their peak around Christmas time, in southern Europe in June, in America in June, and in the UK in mid July, always in the summer season. Annual world production (as of 2003) of domesticated cherries is about 3 million tonnes, of which a third are sour cherries. In many parts of North America they are among the first tree fruits ripe; hence the colloquial term "cherry" to mean "new" or "the first", e.g. "in cherry condition".

As well as the fruit, cherries also have attractive flowers, and they are commonly planted for their flower display in spring; several of the Asian cherries are particularly noted for their flower display. The Japanese sakura in particular are a national symbol celebrated in the yearly Hanami festival. Many flowering cherry cultivars (known as 'ornamental cherries') have the stamens and pistils replaced by additional petals ("double" flowers), so are sterile and do not bear fruit. They are grown purely for their flowers and decorative value. The most common of these sterile cherries is the cultivar 'Kanzan'.

Cherry trees provide food for the caterpillars of several Lepidoptera. See List of Lepidoptera which feed on Prunus.

Cherries have been shown to have several health benefits. Cherries contain anthocyanins, which is the red pigment in berries. Cherry anthocyanins have been shown to reduce pain and inflammation[1]. Anthocyanins are also potent antioxidants. Cherries have also been shown to contain high levels of melatonin[2]. Research has shown that people who have heart attacks have low melatonin levels [3]. Besides being an anti-oxidant, melatonin has also been shown to be important for the function of the immune system. Research also indicates that melatonin suppresses COX-2.
wildcrane at 5/31/2007 15:42 快速引用
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