352 



stage under the sexual organs at all, and with its limb like an 

 inverted T offers a restricted surface for an insect to settle u]jon. 

 Tliis surface is slightly twisted often. 



Exactly how pollination is affected has not been ascertained : 

 but all the earlier flowers in the Gardens obtained it. 



It will l)e gathered from what has been said that the i-oudition 

 figured " from nature " in Engler's Xaturliche Pflanzeiifamilien 

 II part 6, 1888, p. 118, with the lip uppermost, has not been met 

 witli: and as the old figures (Botanical Magazine, 20.55 and Bo- 

 tanical Register, 271) represent the flower in the position, in- 

 varial)le at Singapore, with lip below, it is questionaI)le if such an 

 inverted position is normal in any race. 



TAEXioriTYLLUM Serrula, Hook. f. 



Taeiiio})lujUum Serrida grows on the bark of two trees in the 

 Botanic Gardens, both Dilletiia indica, and both within a few yards 

 of the bank of the Glunv Lake. 



Flower of Taeniophyllum serrula x i- 1. seen from 

 the front and (2) in median section. 



It does not grow over all the branches or even over the whole 

 surface of the chosen Ijranches but only on the lower sides of 

 those facing more or less to the south or lake side. At the north 

 side is a bamboo fence and then a cpiiet roadway. It flourishes 

 best on the tree which lies lowest. Eemoved with the bark carefully 

 to a site away from water the plants died: but in the site of its 

 own choosing, it is plentiful enough. 



This note is published to record that — like Dendrobiuin 

 cnimenatum or Saccolahinm Calceolus it is a periodic flowerer. 

 The little flowers open on the diff'erent ])lants about dawn, and 

 wither, whether fertilized or not towards dark, to be followed by 

 a fresh crop after an interval which is being studied. These are 

 the dates on wdiicli flowering was observed : — 



October 1st, 191.5. 



Octo])er 13th, interval without flowers 11 days. 



October 26th, interval without flowers () days. 



October — a flowering which was not accurately recorded. 



Xovember 6th, double inter\al. 15 days or, say, i ^ T days Avitli- 



out flowers + 1 day of flowering. 

 Xovember lltli, interval without flowers 4 davs. 



