76 
and a? show as a rule only one cavity with two pollinia, the 
other half of the anther being petaloid or foliaceous. 
One of the above flowers lacks the labellum '), 
Dendrobium tetraedre Lndl. 
Habitat Java. 
Coll. 1900. 
A regular peloria (Fig. 29, 30). 
Dendrobium tetrodon Rehb. f. 
Habitat Java. 
Coll. October 1895. 
This flower is perhaps only known as a regular form, accor- 
ding to Mr. Smirx corresponding to D. tetrodon Reichb. fil. 
Miquel in his ,Flora van Nederlandsch Indié”*) suggests the 
question whether it is a peloria of Dendrobium macrostachyum. 
The remarkable thing of our specimen consists in the three 
antisepalous stamens developed as such. Compare with this plant 
D. normale Lindl. which according to Prnzic has always an 
outer whorl of three well developed stamens. 
Dendrobium spec. 
Habitat Ambon. 
Synanthy. The parts of the flower are arranged in two whorls 
round the two gynostemia which occupy the centre, just as in 
that peculiar Digitalis-variety where the topmost flower has 
grown together with the preceding. (Fig. 31—33). 
Dendrobium Wardianum Warner. 
Habitat India. 
Coll. September 1899. 
Many Dendrobiums belonging to the affinity of D. nobile, 
D. Pierardi, D. tortile etc. produce their inflorescences at the 
nodes of the slender stalks when these have shed their leaves. 
Later still on the same spots they produce as a rule shoots 
with roots which behave perfectly like new plants. 
1) The occurrence of at and a? has been once observed by Masters in D. haemo- 
glossum Roxb., also the absence of the labellum in D. nobile. 
2) IV, p. 636. 
34 te aera 
ee er SUG a ee e 
