18 
towards the entrance of the labellum. The sepals coalesce to a 
pouched whole, visible at the left of the paired lips. For details 
we refer to ,de Natuur” 1919, p. 234. Compare also Wors- 
dell II, p. 144. 
Paphiopedilum robustum ? 
Cult. in Orchid house of Mr. H. C. Hacxn, Baarn. 
Tetramerous flower. A peculiarly well-developed specimen 
(fig. 17). 
Paphiopedilum javanicum Pfitz. 
a) Legit C. Dausanton in horto Tjibodas, May 1917. 
Labellum 0. Also the stigma is wanting. Column laterally 
compressed and thin. 
Cfr. what we have mentioned about the same deviation of 
P. praestans Pfitz.') and P. glaucophyllum ”) which showed the 
lip but wanted the staminode. Comp. Worsdell I, p. 234 and 257. 
6) Legit S. pz Meyier in suo horto Modjokerto, July 1918. 
The present case is remarkable owing to its complete con- 
gruity with P. insigne just mentioned. For also now two flowers 
are shown (instead of one) of which the one is purely dimerous. 
The staminode, however, deviates to the right, the only anther 
to the left. The calyx takes the shape of one reniform leaf that 
embraces the peduncle. It has the value of two sepals. 
Alismaceae (incl. Butomeae). 
T enagocharis latifolia Buek. 
Legit J. J. Smirx in suo horto. 
Habitat Java. 
These specimens furnish a remarkable instance of reduction 
either owing to local circumstances, as ‘Smita suggests, or to 
retrograde transformation (fig 18). According to Dr. Smira the 
_ Specimens growing wild in Batavia are normal. 
On examination we stated that 1° the number of pistils, nor- 
ae oa Série, Vol. VIII, p. 7. 
2) id., Vol. XIV, p. 87. 
