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Rosaceae–Identify specie

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Rosaceae–Identify species

 

Identify species through observation of the flowers and fruits

Rosaceae

Family features:

(1) herbs, shrubs or trees

(2) leaves alternate, usually with stipules

(3) flowers bisexual, actinomorphic, receptacles convex or concave, floral parts pentamerous, whorled arrangement, perianth and stamens often fused at bottom as floral tube; polyandrous, carpel 1-many, free or fused, ovary superior, a few inferior.

(4) varied in fruit: drupe, pome, achene, follicle, etc.

(5) mainly distributed in north temperate, 100 genera, 3000 species, in China 51 genera, more than 1000 species, in Hainan 8 genera, 22 species.

According to the numbers of carpels, position of ovaries and features of fruits, the family were divided into 4 subfamilies.

Spiraeoideae

(1).Spiraea

(2).Sorbaria

 

Trees or herbs

Leaves alternate, often with stipules

Flowers bisexual, actinomorphic,  floral parts pentamerous, whorled arrangement; polyandrous to definitely numbered; ovaries polyacrpellary to fused or unicapcellous, ovules many to  few

 

Carefully observe the following plants!

Features of Fabales (common features of the 3 families):

Legume

With root nodules, stipules and developed leaf cushions

Floral parts pentamerous, with fused sepals and discrete petals, one carpel, one chamber and many ovules

family classification of Fabales and common plants

Engle System(Leguminosae)(Cronquist System)

According to Engle System, Fabales is divided into 3 subfamilies. In this textbook, Fabales is divided into 3 families (according to Cronquist System).

Mimosaceae

Caesalpiniaceae

FabaceaePapilionaceae

 

The criteria of the family classification are: flower appearance and arrangement of petals

:

Valvate arrangementrefers to the arrangement of sepals or petals in a flower bud such that these parts meet at their edges and do not overlap.

: 12

Ascending imbricate arrangementeach sepal or petal overlaps nearby one at one edge, and this one also overlaps another one (in spiral arrangement). But one or 2 parts are totally in it at the top, overlapped by other two on both edges. It is called ascending imbricate arrangement.

: 12

Descending imbricate arrangement each sepal or petal overlaps nearby one at one edge, and this one also overlaps another one (in spiral arrangement). But one or two parts are totally out of it at the bottom, overlapping other two on both edges. It is called ascending imbricate arrangement.

3
Comparison of the 3 families in Fabales

: ,

Mimosceae   (flowers actinomorphic, petals valvate

arrangement, polyandrous and free)

:        , 10

Caesalpiniaceae  (petals ascending imbricate arrangement, stamens 10 (definite

numbered) and free)

 

:

Fabaceae              109+15+5 2

Papilionaceae     (flowers zygomorphic, corolla vexillary, petal descending

imbricate, stamens (definite numbered) 10, 9+1, or 5+5

(diadelphous))

P268

Mimosceae

  1. Albizzia julibrissin

2.Mimosa

  1. pudica
  2.   invisa

3.Acacia

A.confusa

  1. auriculiformis
  2. mangium

Caesalpiniaceae

1.Caesalpinia

C.sepiaria    

2.Bauhinia

  1. blakeana
  2. Cercis
  3. chinensis

4.Delonix

  1. regia

(Fabaceae or Papilionaceae)

  1. Glycine
  2. Arachis
  3. Pisum
  4. Vicia
  5. Vigna
  6. Phaseolus
  7. Canavalia
  8. Medicago
  9. Melilotus

10Glcyrrhiza 

11Astrgalus

3.

 

 

 

 

Pterocarpus indicus  Ormosia henryi   Dalbergia hupeana

 

 

K 3-  C 3-  A            G -1

*K 4-5  C 4-5    A4-5+4-5 G4-5

*K 4-5  C 4-5, 0A4-5+4-5 G(2-5)

*K5C 5, 0    A5-         G -1

* K(3-6)C3-6 ,(3-6)A ,(3-6) G11

K (5)   C5              A10      G11

K (5)  C5              A(9)1, (5)(5), (10), 10 G1:1

 

[5]

 

5

 

 

 

 

 

 

(Myrtales)

Myrtaceae

 

Carefully observe the following plants!

Myrtaceae

(1)

(2)/

(3)3-4-5

(4)/

(5)1003000867513

Family features:

(1) Arboreous plants

(2) Simple leaves opposite or whorled, without stipules, with oil spots on leaf

(3) Flowers bisexual and atinomorphic, fused sepals with 3-many lobes, 4-5 petals free, with floral disc, polyandrous, ovary inferior

(4) Berry, drupe or capsule

(5) Distributed in tropical and subtropical zones (America and Atlantic) , 100 genera, more 3000 species. In China 8 endemic genera, 67 species, introduced 5 genera. In Hainan all 13 genera

(floral disc)(disc, cushion, or cup-like formation from expansion of part of receptacle near the ovary )

2.

Eucalyptus

Syzygium jambos

Psidium guajava

Melaleuca leucadendra

3.

 

 

 

 

Myrtaceae

Lythraceae
Lagerstroemia

  1. speciosa

Thumelaeaceae

 

Trapaceae

 

Punicaceae

Punica granatum

Onagraeae

 

Melasomataceae

Melastoma candidum

Combretaceae

Quisqualis indica

 

 

5

 

 

 

 

 

 

(Rhizophirales)

(Rhizophoraceae)

 

1

2

3A=1C2C2

 

4(mangrove forest)

1, arboreous plants

2, leaves opposite, leathery

3, polyandrous, the number of stamens is 1 or 2 times of that of petals and stamens and petals are opposite, ovary inferior or half-inferior, each chamber with 2 ovules. Embryos developing on parent trees. green cotyledons appear before leave parent trees. (viviparous plant)

4, main tree species of mangrove forests on tropical beach

(viviparous plant)

 

A plant whose seeds geminate and develop to seedling  within mature fruits before leaving parent plant. Seedling grows up, then falls down to the soil and continues its growth.

 

(Rhizophora apiculata)

(Ceriops tagal)

(Kandel apiculata)

(Kandel stylosa)

(Brugaier sexangula)

(Brugaier gymnorrhiza)

(Santalales)

Olacaceae

Santalaceae

Loranthaceae

Viscaceae

Balanophoraceae

Celasrals)

Celastraceae

Hippocreaceae

Salvadoraceae

Aquifoliaceae

Icacinaceae

 

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