[8]

Desmodium Nov 25

[sketch] J joint of large leaflet j — little Leaflet L terminal leaf I leaflet lateral

J = 2 3 mm  L = 74m   j = 2.7m 3mm l = 10 mm

Proximate cause of movement of leaflets of Hedysarum—

They have become aborted for different reasons— in one case of mimosa for want of space; with Hedysarum probably from compaction

The thickness of j joint is between 0.3mm & 0.4mm of J full grown about 1.3mm

Therefore joint of little leaflet nearly as long as the joint of full-grown terminal leaf

[9]

Desmodium average of 2 full grown leaf

 L   74 [+] 78 [=] 152 [÷] 2 [=] 76

J = 3 [+] 3.2 [=] 62 [÷] 2 [=] 3.1

 

76 [÷] 3.1 [=] 245

 

    J : L :: 1 : 24.5

    l = 10 [+] 14 [+] 15 [=] 39 [÷] 3 [=] 13

j   3 [+] 3 [+] 2.8 [=] 88 [÷] 3 [+] 2.93

 

13.00 [÷] 293 [=] 4.43

 

    j : l :: 1 : 4.4

 

    Leaf III not perfectly fullgrown

59 [÷] 2.8 [=] 21.07

9.5 [+] 125 [=] 220 [÷] 2 [=] 11

2.5 [+] 3 [=] 55 [÷] 2 [=] 2.75

11.00 [÷*] 275 [=] 4

Joint : L :: 1 : 21.1

Result ☞   j : l :: 1 : 4

[9v]

J.   3. [+] 3.2 [+] 2.8 [=] 9.0

j. 3. [+] 2.8 [+] 3 [+] 2.5 [+] 3 [=] 14.3 [÷] 5 [=] 2.86.

aver 3. m

74
78
59

[10]

2

M. albida

Average of 3, A, A', A''

leaf 51 [+] 50 [+] 40.5 [=] 1415 [÷] 3 [=] 47.166

joint 1.6 [+] 1.6 V [+] 1.7 [=] 49 [÷] 3 [=] 1.6

 

  4716|166

47166 [÷] 166 [=] 284

 

  joint to leaf as 1 to 28.4 (Big leaf)

Average a', a  a"

 

7 [+] 6.5 [+] 5 [=] 185 [÷] 3 [=] 6.16

0.5 [+] 0.4 [+] 05 [=] 1.4 [÷] 3 [=] .466

 

6.16 [÷] .466 [=] 13.4

joint to leaf — 1 to 13.4

[11]

Nov 28 M. albida full grown leaves [sketch]

Length measure on the under surface

Length measured on the under surface  

         leaf        joint

  A'              51         1.6        A leaf=         50        joint→             1.6

  B'      55         1.0        B —"—        51         —"—             1.1

  C'      55        1.0        C      52         —"—             1.4

  a'        7        0.5        a       6.5                  0.4

                                                                    

 

Here the joint of litle leaft abut 1/2 of length of that of big leaves.

             Leaf II

           A"      leaf

    4.05     joint  

    1.7

                          a"      5.         0.5    

 

Here to joint of little leaf about 1/2 of length of that of big leaves

Leaf II

Breadth big leaves about 1 mm

little 0.3 mm

(Relative sizes of Pulvinus)

[12]

1)

Old Plant

Upper pair of leaves

b..........c

a

a = leaf angle

bc = leaf distance

leaf angle at 5.35 & 6

 

Time

3..

 

   ⨀  ⨀

 

 ⨀    ⨀    3.PM

    ⨀   ⨀    5.10

    ⨀  ⨀   5.35

    ⨀  ⨀     6

    ⨀  ⨀     8.30

 

⎼⎼⎼⎼⎼  ditto ⎼⎼⎼⎼⎼⎼  10.25

At 6 o'clock therefore the leaf distance has diminished almost as much as it ever does. Whereas the leaves are very far from perpendicular at that time and had not moved & during the interval of time from 5.10 to 6— the leaf angle has not diminished— At 8.30 the leaves have become perpr [perpendicular] and a slight further diminution of leaf distance had taken place— At 10. 25 no change perceptible—

[12v]

Desmodium

[13]

2)

Old Plant

Second pair of leaves

 ⨀    ⨀

 

   ⨀     ⨀ about 2.30 – 3

   ⨀    ⨀     about 5.10 – 5.30

   ⨀   ⨀0      5.38

   ⨀1  ⨀2     8.30

    ⨀  ditto        10.25

(a) is leaf angle at fr about 5.10 — 5.38 at 8.30 leaves were perpr

Here also the leaf distance began to diminish before the leaves were perpr

[14]

3

Tall young Plant

Second pair of Leaves

⨀   ⨀

 

   ⨀        ⨀ 2.30 – 3

   ⨀    ⨀      about 5.10

   ⨀   ⨀       5.42

   ⨀ ⨀ no time noted doubtful measurement

   ⨀   ⨀       8.30

    ditto        10.25

Again leaf distance begins to diminish before leaves are perpendicular—

At 5.46 the leaf angle was about (a); so that between 6.46 & 8.30 the leaf sunk through an angle (a) while the leaf distance altered very little; its great change have taken place by 5.10—

[15]

4)

Tall young Plant

First pair of Leaves {CROOKED}

  ⨀     ⨀ 2.30 – 30

   ⨀  ⨀     about 5.10

   ⨀  ⨀      5.50

petioles as near  together  as  is  possible 8.30

      ditto ⎽  ⎽  ⎽  ⎽   10.25

The only use of this series is to show that the leaf distance begins to diminish before the leaves become perpendicular—

[16]

5)

Small young Plant

Second pair of Leaves

{first pair not old enough to measure}

              ⨀   ⨀

 

  ⨀       ⨀ 2.30– 3

  ⨀     ⨀      5.25

  ⨀   ⨀      5.33

  ⨀ ⨀       8.30

Leaf distance begins to diminish before leaves are perpendicular. The main greater part of the diminution having taken place by 5.25

[16v]

(39

Desmodium

Sleep— movements of main Petioles