A Photographic Guide to Common Urban Trees of Hong Kong

	Introduction
	2018 Third Revision (Revised Contents)

2018 Third Revision (Revised Contents)

頁 Page			樹種 Tree species	類別 Categories	內容/修訂內容 Content/Revised content
版次 Revision					內容/修訂內容 Content/Revised content
2014	2015	2018			2014年版	2015年版	2018年版
14	14	14	南洋杉 Araucaria cunninghamii	樹形相 Tree form photo
14	14	14	南洋杉 Araucaria cunninghamii	葉 Leaf	具二形，約0.7-1.7 x 0.25厘米 Dimorphous, about 0.7-1.7 x 0.25 cm		二形，幼態葉約0.7-1.7 x 0.25厘米 Dimorphous, juvenile leaves about 0.7-1.7 x 0.25 cm 成熟葉長0.6-1厘米 Adult leaves 0.6-1 cm long
15	15	15	南洋杉 Araucaria cunninghamii	花 Flower
15	15	15	南洋杉 Araucaria cunninghamii	果實 Fruit			新增
16	16	16	異葉南洋杉 Araucaria heterophylla/ 柱狀南洋杉 Araucaria columnaris	種名 Species name	異葉南洋杉 Araucaria heterophylla Norfolk Island Pine		柱狀南洋杉 Araucaria columnaris Cook Pine
16	16	16	異葉南洋杉 Araucaria heterophylla/ 柱狀南洋杉 Araucaria columnaris	原產地 Place of origin	澳洲諾福克島 Norfolk Island in Australia		新喀里多尼亞 New Caledonia
16	16	16	異葉南洋杉 Araucaria heterophylla/ 柱狀南洋杉 Araucaria columnaris	花期 Flower- ing	5-6		2-3
16	16	16	異葉南洋杉 Araucaria heterophylla/ 柱狀南洋杉 Araucaria columnaris	果期 Fruiting	6-8		3-5
16	16	16	異葉南洋杉 Araucaria heterophylla/ 柱狀南洋杉 Araucaria columnaris	樹形相 Tree form photo	常綠大喬木，高可達30米 Large evergreen tree, up to 30m tall		常綠大喬木，高可達30-60米 Large evergreen tree, about 30-60m tall
16	16	16	異葉南洋杉 Araucaria heterophylla/ 柱狀南洋杉 Araucaria columnaris	樹幹 Trunk	樹皮裂成薄片狀脫落 Bark split into flakes		樹皮橫向開裂，剝落 Bark with horizontal cracks, peeling off
16	16	16	異葉南洋杉 Araucaria heterophylla/ 柱狀南洋杉 Araucaria columnaris	葉 Leaf	具二形，長約0.6-1.2厘米 Dimorphous, about 0.6-1.2 cm long		二形，幼態葉可長達13毫米 Dimorphous, juvenile leaves up to 13 mm long 成熟葉長5-7毫米 Adult leaves 5-7 mm long
17	17	17	異葉南洋杉 Araucaria heterophylla/ 柱狀南洋杉 Araucaria columnaris	花 Flower
17	17	17	異葉南洋杉 Araucaria heterophylla/ 柱狀南洋杉 Araucaria columnaris	果實 Fruit	8-12 ×7-11厘米 8-12 × 7-11 cm		10-15 ×7-11厘米 10-15 × 7-11 cm
17	17	17	異葉南洋杉 Araucaria heterophylla/ 柱狀南洋杉 Araucaria columnaris	辨認特徵 Features for Identifi- cation	小枝平展或下垂，側枝成羽狀排列 Branchlets flat or drooping, lateralbranches usually pinnately arranged 葉柔軟而不刺手 Leaves soft, not spiny 葉具二形：(a)幼樹及側生小枝的葉排列疏鬆，針形向上彎曲 Leaves dimorphous: (a) leaves of youngplants and lateral branchlets in loosearrangement, acicular, bendingupwards (b)老枝及花果枝上的葉排列較密，呈寬卵形或三角狀卵形 (b) leaves on old branches and cone bearing branchlets in close arrangement, broadly ovate or triangular ovate		小枝平展 Branchlets growing in one plane 小枝平展 Branchlets growing in one plane 葉具二形：(a)幼樹及側生小枝的葉針狀，頂端內彎 Leaves dimorphous: (a) leaves ofyoung plants and lateral branchletsneedle-like, apex incurved (b)老枝及花果枝上的葉呈三角形，頂端內彎 (b) leaves on old branches and conebearing branchlets triangular, apex incurved
17	17	17	異葉南洋杉 Araucaria heterophylla/ 柱狀南洋杉 Araucaria columnaris	附注 Remarks			新增異葉南洋杉在香港偶爾栽培。 Araucaria heterophyllais occasionally planted in Hong Kong.
35	35	35	陰香 Cinnamomum burmannii	辨認特徵 Features for Identifi- cation	有時見褐色蟲癭 Sometimes with brown galls	有時見植物病害 Sometimes with plant disease
86	86	86	破布葉 Microcos nervosa	樹形相 Tree form photo
156	156	154	檸檬桉 Corymbia citriodora/ Eucalyptus citriodora	種名 Species name	Eucalyptus citriodora		Corymbia citriodora
156	156	154	檸檬桉 Corymbia citriodora/ Eucalyptus citriodora	異名 Synonym			新增 Eucalyptus citriodora
156	156	154	檸檬桉 Corymbia citriodora/ Eucalyptus citriodora	葉 Leaf	披針形或狹披針形，稍呈鐮狀，10-25 x 1-4厘米 Lanceolate or narrowly lanceolate, slightly falcate, 10-25 x 1-4 cm		成熟葉披針形或狹披針形，稍呈鐮狀，10-15 x 1-4厘米 Mature leaveslanceolate or narrowly lanceolate, slightly falcate, 10-15 x 1-4 cm
157	157	155	檸檬桉 Corymbia citriodora/ Eucalyptus citriodora	辨認特徵 Features for Identifi- cation	Calyptra semiglobose, apex rounded and slightly acute; two-layered, outer layer slightly thick		Calyptra semiglobose, apex rounded and with a small point; two-layered, outer layer slightly thick
157	157	155	檸檬桉 Corymbia citriodora/ Eucalyptus citriodora	辨認特徵 Features for Identifi- cation	蒴果壺形或壇形		蒴果壺形或形
164	164	156	毛葉桉 Corymbia torelliana/ Eucalyptus torelliana	種名 Species name	Eucalyptus torelliana		Corymbia torelliana
164	164	156	毛葉桉 Corymbia torelliana/ Eucalyptus torelliana	異名 Synonym			新增 Eucalyptus torelliana
164	164	156	毛葉桉 Corymbia torelliana/ Eucalyptus torelliana	葉 Leaf	卵形，薄革質 Ovate and thinly leathery		成熟葉卵形，薄革質 Mature leavesovate and thinly leathery
165	165	157	毛葉桉 Corymbia torelliana/ Eucalyptus torelliana	辨認特徵 Features for Identifi- cation	蒴果球狀壇形，直徑1-1.3厘米，果緣收縮，果瓣3，內藏 Capsules globose, jar-shaped, 1-1.3cm in diameter, disk contracted, valves 3, included		蒴果球狀罎形，直徑1-1.3厘米，上部收縮，果瓣3，內藏 Capsules globose, jar-shaped,1-1.3 cm in diameter, upper partcontracted, valves 3, included
165	165	157	毛葉桉 Corymbia torelliana/ Eucalyptus torelliana	辨認特徵 Features for Identifi- cation	葉片及葉柄被毛，葉片基部圓形 Leaves and petiole pubescent, leaf base round		成熟葉片及葉柄被毛，葉片基部圓形 Leaves and petiole pubescent, leaf base of mature leaves round
154	154	158	赤桉 Eucalyptus camaldulensis	樹幹 Trunk	樹皮光滑，呈不規則片狀或長片狀脫落，灰白色而夾雜有灰色及棕褐色的斑塊，樹幹基部常有粗糙樹皮宿存 Bark smooth, peelingoff in irregular flakes orstrips; offwhite mixingwith grey and brownpatches; base of trunk often with persistentrough bark		樹皮光滑，呈不規則片狀或長片狀脫落，灰白色而夾雜有灰色及棕褐色的斑塊，樹幹或有粗糙樹皮宿存 Bark smooth, peeling offin irregular flakes or strips;offwhite mixing with grey andbrown patches; rough barkmaybe persistent on trunk
154	154	158	赤桉 Eucalyptus camaldulensis	葉 Leaf	狹披針形至披針形 Narrowly lanceolate to lanceolate		成熟葉狹披針形至披針形 Mature leavesnarrowly lanceolate to lanceolate
155	155	159	赤桉 Eucalyptus camaldulensis	辨認特徵 Features for Identifi- cation	傘形花序腋生，花序梗圓形纖細；花蕾卵形，長約0.5-0.8厘米帽狀體半球形，頂部收縮成一狹喙，萼管亦呈半球形 Calyptra semiglobose, apex contracted into a narrow beak, hypanthium also semiglobose 蒴果近球形，直徑0.5-0.6厘米，果緣凸起		傘形花序腋生，花序梗圓柱形，纖細；花蕾卵形，長約0.5-0.8厘米帽狀體半球形，頂部收縮，萼管亦呈半球形 Calyptra semiglobose,apex contracted, hypanthium also semiglobose 蒴果近球形，直徑0.5-0.6厘米，果緣窿起
155	155	159	赤桉 Eucalyptus camaldulensis	附注 Remarks			新增香港的赤桉有三個常見的亞種︰ There are three common subspecies of Eucalyptus camaldulensis in Hong Kong: 1) Eucalyptus camaldulensis subsp. camaldulensis 2) Eucalyptus camaldulensis subsp. obtusa (鈍蓋赤桉) 3) Eucalyptus camaldulensis subsp. minima
159	159	161	窿緣桉 Eucalyptus exserta	葉 Leaf	狹披針形 Narrowly lanceolate		成熟葉狹披針形 Mature leavesnarrowly lanceolate
159	159	161	窿緣桉 Eucalyptus exserta	辨認特徵 Features for Identifi- cation	傘形花序腋生，花序梗圓形；花蕾長卵形，長0.8-1厘米		傘形花序腋生，花序梗圓柱形；花蕾長卵形，長0.8-1厘米
		162	巨桉 Eucalyptus grandis	種名 Species name			新增巨桉 Eucalyptus grandis Flooded gum, Rose gum
		162	巨桉 Eucalyptus grandis	原產地 Place of origin			新增澳洲 Australia
		162	巨桉 Eucalyptus grandis	花期 Flower- ing			新增 5-9
		162	巨桉 Eucalyptus grandis	果期 Fruiting			新增 7-11
		162	巨桉 Eucalyptus grandis	樹形 Tree form			新增常綠大喬木，高可達55米 Large evergreen tree, up to 55 m tall
		162	巨桉 Eucalyptus grandis	樹幹 Trunk			新增樹皮光滑，呈帶粉狀的白色至灰青色至粉橙色；樹基有粗糙和片狀樹皮宿存 Bark smooth, powdery white to greenish grey to pinkorange; rough and flaky bark persistent at base
		162	巨桉 Eucalyptus grandis	葉 Leaf			新增葉披針形，8-18 x 1.5-4厘米 Leaves lanceolate, 8-18 x 1.5-4 cm
		163	巨桉 Eucalyptus grandis	花 Flower			新增傘形花序腋生，花7-11 朵；花序梗扁平，花梗不存在或長至0.5厘米；花蕾卵形至梨形，0.6- 0.9 x 0.4-0.5厘米 Axillary umbels 7-11 flowered; peduncle flattened, pedicels absent or to 0.5 cm long. Buds ovoid to pyriform, 0.6-0.9 x 0.4-0.5 cm 帽狀體圓錐形具喙；萼管倒圓錐形或鐘形，與帽狀體同長或稍長 Calyptra conical and beaked, hypanthium obconical or campanulate, as long or slightly longer than calyptra
		163	巨桉 Eucalyptus grandis	果 Fruit			新增蒴果梨形，蒴果中間位置略為收窄，0.4-1 x 0.5-0.8厘米；果緣凹陷，果瓣4-5，凸出而向內彎 Capsules pyriform, slightly contracted at the rim, 0.4-1 x 0.5-0.8 cm; disk descending, valves 4-5, exserted and incurved
161	161	165	大葉桉 Eucalyptus robusta	葉 Leaf	革質，卵狀闊披針形 Leathery, ovate-broadly lanceolate		成熟葉革質，卵狀闊披針形 Mature leavesleathery, ovate-broadly lanceolate
161	161	165	大葉桉 Eucalyptus robusta	辨認特徵 Features for Identifi- cation	蒴果圓筒形或壼形，上半部略收縮，蒴口稍擴大，長寬均約1-1.5厘米，~~果緣薄，~~果瓣內藏 Capsules cylindrical or pot-shaped, slightly constricted in the upper part, slightly broadened at the opening, about 1-1.5 cm in both length and width; ~~disk thin,~~ valves included 葉片大，卵狀闊披針形，革質，8-18 x 3.5-7.5厘米，基部不對稱，側脈多而明顯 Leaves large, ovate-broadly lanceolate, 8-18 x 3.5-7.5 cm, leathery, base oblique, lateral veins numerous and obvious		蒴果圓筒形或壼形，上半部略收縮，蒴口稍擴大，長約1-1.5厘米，果瓣內藏 Capsules cylindrical or pot-shaped, slightly constricted in the upper part, slightly broadened at the opening, about 1-1.5 cm in length; valves included 成熟葉葉片大，卵狀闊披針形，革質，8-17 x 3-7厘米，基部不對稱，側脈多而明顯 Mature leaves large, ovate-broadly lanceolate, leathery, 8-17 x 3-7 cm, base oblique, lateral veins numerous and obvious
162	162	166	細葉桉 Eucalyptus tereticornis	樹幹 Trunk	樹皮光滑，呈不規則片狀或長片狀脫落，灰白色而夾雜有灰色及棕褐色的斑塊，樹幹基部常有粗糙樹皮宿存 Bark smooth, peeling off inirregular flakes or strips, ,offwhite mixing with grey andbrown patches, base of trunk often with persistent roughbark		樹皮光滑，呈不規則片狀或長片狀脫落，灰白色而夾雜有灰色及棕褐色的斑塊，樹幹或有粗糙樹皮宿存 Bark smooth, peeling offin irregular flakes or strips,offwhite mixing with grey andbrown patches; rough barkmaybe persistent on trunk
162	162	166	細葉桉 Eucalyptus tereticornis	葉 Leaf	葉狹披針形，稍彎曲 Leaves narrowly lanceolate, slightly curved		成熟葉狹披針形，稍彎曲 Mature leavesnarrowly lanceolate, slightly curved
163	163	167	細葉桉 Eucalyptus tereticornis	辨認特徵 Features for Identifi- cation	帽狀體圓錐形至長圓錐形，常比萼管長2-4倍 Calyptra conical to long conical, usually2-4 times longer than hypanthium 蒴果近球形至陀螺形，直徑0.6-0.8厘米，果緣凸出		帽狀體圓錐形至長圓錐形，長為萼管的2-4倍 Calyptra conical to long conical, 2-4times the length of hypanthium 蒴果近球形至陀螺形，直徑0.6-0.8厘米，果緣窿出
166	166	168	尾葉桉 Eucalyptus urophylla	樹幹 Trunk	上部樹皮常光滑，呈灰白色 Bark on the upper part smooth and offwhite		上部樹皮常光滑，呈淺棕色 Bark on the upper part smooth and pale-brown
166	166	168	尾葉桉 Eucalyptus urophylla	葉 Leaf	寬披針形 Broadly lanceolate		成熟葉寬披針形 Mature leavesbroadly lanceolate
167	167	169	尾葉桉 Eucalyptus urophylla	辨認特徵 Features for Identifi- cation	蒴果杯狀，果瓣內藏，與果緣近平，4-5裂，果徑0.6-0.8厘米 Capsules cup-shaped, valves included,subparallel to the disk, 4-5-lobed, fruit0.6-0.8 cm in diameter		蒴果杯狀，果瓣4-5，內藏，與果緣近平，果徑0.6-0.8厘米 Capsules cup-shaped, valves 4-5,included, subparallel to the disk, fruit0.6-0.8 cm in diameter
269	269	271	蒲葵 Livistona chinensis	花 Flower
274		276	南洋杉 Araucaria cunninghamii/ 異葉南洋杉 Araucaria heterophylla/ 柱狀南洋杉 Araucaria columnaris	類似植物比較 Comparison of Similar Plants - 樹幹 Trunk, 葉 Leaf	2014年版 2018年版
		299	窿緣桉 Eucalyptus exserta/ 大葉桉 Eucalyptus robusta	類似植物比較 Comparison of Similar Plants - 樹幹 Trunk, 花 Flower, 果 Fruit	新增
		300	檸檬桉 Corymbia citriodora/ 毛葉桉 Corymbia torelliana/ 巨桉 Eucalyptus grandis	類似植物比較 Comparison of Similar Plants - 樹幹 Trunk, 花 Flower, 果 Fruit	新增
		301	尾葉桉 Eucalyptus urophylla/ 赤桉 Eucalyptus camaldulensis/ 細葉桉 Eucalyptus tereticornis	類似植物比較 Comparison of Similar Plants - 樹幹 Trunk, 花 Flower, 果 Fruit	新增
圖片索引-葉14	圖片索引-葉14	圖片索引-葉14	南洋杉 Araucaria cunninghamii
圖片索引-葉16	圖片索引-葉16	圖片索引-葉16	異葉南洋杉 Araucaria heterophylla/ 柱狀南洋杉 Araucaria columnaris		異葉南洋杉 Araucaria heterophylla		柱狀南洋杉 Araucaria columnaris
		圖片索引-葉162	巨桉 Eucalyptus grandis				新增
圖片索引-花14	圖片索引-花14	圖片索引-花14	南洋杉 Araucaria cunninghamii
圖片索引-花16	圖片索引-花16	圖片索引-花16	異葉南洋杉 Araucaria heterophylla/ 柱狀南洋杉 Araucaria columnaris		異葉南洋杉 Araucaria heterophylla		柱狀南洋杉 Araucaria columnaris
圖片索引-花156	圖片索引-花156	圖片索引-花154	檸檬桉 Corymbia citriodora/ Eucalyptus citriodora
圖片索引-花160	圖片索引-花160	圖片索引-花164	大葉桉 Eucalyptus robusta
圖片索引-花162	圖片索引-花162	圖片索引-花166	細葉桉 Eucalyptus tereticornis
圖片索引-花164	圖片索引-花164	圖片索引-花156	毛葉桉 Corymbia torelliana/ Eucalyptus torelliana
		圖片索引-花162	巨桉 Eucalyptus grandis

Agriculture, Fisheries and Conservation Department The Government of the Hong Kong Special Administrative Region