[148]

Oxalis tropaeoloides

It is certainly an Oxalis from first true leaf

In study, temperature 11.0 C

   Left Cot . 38 above Horizon    Rt 27 above

10 55 pm — 115° bewtween cots night

38 [＋] 27 [=]  180 65  [−] 65 [=] 115

The Cotyledons probably Horizntal or 180° in day ∴  each rises 32 1/2.

 Nov 23 hothouse. 21.3 C,    12. 35 pm day

   L 25 above    Rt 25 above

ie each had rise only 5° 130° between them (day)

10. 15 pm L 30— R 30 120 between in my room

Nov 24—   .11. 58 am

   L. 0° above    R. 20 above

160° between (day)

10 30 pm L 20° above R.    30° above thus risen 10°nil

   thus risen 20° 130 between (night) (hot-house)

Nov 25. morning 10° below    10 above

180° between (day)

9. 8 pm 20° above    25° above

   ie rise 20°    ie rise 15° 

between 135. (night) (hot house)

Nov. 28 9° 15' P.m. The cots to the eye show no signs of sleep.

[149]

Nov. 29th

Oxalis tropaeoloides

In the younger one there was a vague region, where the cells were slightly smaller than those above or below—

In the older one with a clearly well developed true leaf (& cotyledons 3.4 mm long) there is what looks like the ghost of a pulvinus close to the lamina. There are distinct small pulvinus-cells .015 to .024 mm in length, but they are not arranged continued in a regular band across the petiole: in the central line of this petiole there are 3 or 4 in a row lengthways but towards the edges of the petiole, the pulvinus disappears, & it can be seen where it only consists of 1 or 2 cells. I suppose this gives it a ghostly look as the cells at the centre catch ones eye at once as a narrow bit of pulvinus which disappears as the eye follows the line across petiole