163 
The normal leaf (fig. 71) is nearly sessile and has a pinnati- 
fid-pinnatipartite blade. Each of its lobes receives a lateral vein 
springing at right angles from the midrib. Between two suc- 
cessive veins springs a thinner one, which at a short distance 
bifurcates and sends its upper branch into a prickle but the 
lower one to the adjoining main lateral vein. The apex is 
long and narrow and terminates in a prickle. Length of the 
leaf 2 dM. , 
I. In a specimen (cultivated in a pot) consisting of an un- 
— 
Ls 
branched stem only, the highest and the lowest leaf-pairs 
were normal, but the 3 middle pairs showed deviations. 
a) lowest pair. One leaf (fig. 72) in very small (10 X 
12 mM.), the opposite one (fig. 73), 12'/, cM. long, has 
an abnormal venation, for the lowest pair of lateral nerves, 
instead of reaching the lowest lobes, bends upwards sen- 
ding branches to those lowest lobes. Also the rest of the 
blade shows disturbances consisting of the interjacent 
véins and their regular branches having been replaced 
by an irregular system of anastomoses. 
b) Leaves 91/, cM. long (fig. 74). The two lowest lateral 
veins are as thick as the midrib and proceed as far as 
the top; from here branches go to the lateral lobes. 
c) Leaves 7'/, and 6 cM. long (fig. 75). Lowest lateral 
veins bent upwards, venation however not quite as regular 
as in the preceding pair. 
Midrib split up as far as 4 cM. from the apex and with 
it the blade. The two tops turn their dorsal surfaces 
towards one another, as may be sufficiently illustrated 
‘by figures 76 and 77‘). 
Hemigraphis colorata Hallier f. 
Habitat Java. 
Coll. April 1894. 
1) Compare Penzic Il, p. 227 where he mentions an observation by Magnus: 
an der Oberseite eines Acanthus-blattes eine grosse, doppeltfligelige, blattartige 
Exerescenz, durch Spaltung als Verwachsungsnaht entstanden“. 
