size and quite simple structure, and A rudimentary lid of the 
pitchers represented from a very early stage by little more 
than a constriction at the apex of those organs. 
Of these differences two only have been bridged over by 
_ the comparatively recent discovery of a third genus of Sar- 
raceniacee, namely Darlingtonia (Tab. 5920), in which the 
stigma is intermediate in complexity of structure, and the 
lid of the pitcher, whilst never closing that organ, under- 
goes another and a very different development from either 
of its co-ordinates. Turning to the fruits of the three 
genera, they are essentially the same except in the structure 
of the testa of the seeds, which in Sarracenia are obscurely 
winged along the raphe, in Heliamphora broadly winged 
all round, and in Darlingtonia wingless but clothed with 
Squarrose bristles. The essential structure and functions 
of the pitcher are the same in all three. genera, the in- 
terior of the latter presenting detentive hairs on the upper 
part, and a glandular secreting surface below. 
- Viewing the relations between these three genera to 
One another, the question naturally arises whether to 
regard Heliamphora as a degraded, or an ancestral, member ~ 
of the Order. I incline to the latter view, though it points 
to the surmise that the Order originated in a region now 
Separated by upwards of 2000 miles from that inhabited 
by any of its other members, in so far as their distribution 
is known. Possibly, not probably, other Sarraceniacew~ 
thay exist in the little known mountain’ regions of Vene- 
zuela, though such may not be expected to occur in the 
volcanic areas of Central America and the West Indies, 
It remains to add that Heliamphora was first re- 
found by Burke, an English Orchid Collector in the 
Roraima district in 1881,*who brought plants of it to 
Messrs. Veitch and Sons; and that in 1884 Mr. im 
Thurn collected it on the occasion of his reaching the _ 
supposed inaccessible summit of Roraima. In his account 
of the botanical collections which he made during 
that expedition (Trans. Linn; Soc. Ser. 2, ii. 263), he — 
mentions Heliamphora as growing “in wide spreading — 
very dense tufts in the very wettest places, where the 
grass happens not to be long. The red-veined pitchers, its 
delicate white flowers raised high on red-tinted stems, its 
. Sturdy habit of growth, make it a pretty, little picture. 
