Francis E. Lloyd — 260 — Carnivorous Plants 



bution. Some Asian species {U. rosea, U. Warhurgii) (ji — lo, ii) 

 studied by Goebel have an extension of the funnel to form a long pro- 

 jecting beak of the shape of a knife blade, armed with gland hairs. 

 Apparently some degree of trap dimorphism occurs in U. rosea, affect- 

 ing the size of the trap and the form of the beak (Lloyd 1932a). Species 

 showing these pecuharities are found also in Australia and New Guinea. 

 U. Kirkii, occurring in central Africa, is apparently unique (jj — 

 I, 2). Of the same general form and appearance of U. capensis, the 

 threshold retreats into the interior, and has no step leading to the 

 pavement. The tripping mechanism consists of two long upwardly 

 curved bristles based at the juncture of the hinge and the blunt edged 

 middle piece. The latter is fortified by two large tubercles developed 

 from inner course cells, each semi-pyriform, with a thin line of tissue 

 between, along which the middle piece can fold during opening. 



U. orhiculata (32 — 1-4). — This, representing a group of species in 

 Asia and Africa, was examined by Goebel, who did not observe more 

 than the stubby, branched, glandular antennae. The entrance mech- 

 anism is very peculiar. The velum is supplemented by membranes 

 arising from the stalked glands of the step. The tripping mechanism 

 of the door consists of three glandular hairs set in a triangle on the 

 upper half of the door. One is mallet-shaped, placed at the inwardly 

 directed apex of the triangle. The other two are at first large, 

 globular, nearly sessile glands (32 — 6). In maturity, the capital, con- 

 taining a large mass of stiff mucilage, bursts in a regular fashion, re- 

 leasing a long sausage-like mass of jelly which remains attached to the 

 hair. Two of these hang down in front of the entrance, and with the 

 mallet-shaped hair receive the impact of prey which trips the door 

 (Lloyd 1932a). A Thibetan species (Brit. Mus.: L.S. and T. 802), 

 similar to U. muUicaulis, has a broad fan-shaped rostrum armed with 

 radiating glands, which extend forward and in front of the entrance. 

 U. hrachiata is also like this (Compton) (32 — 5, 7-9). 



U. longiciliata {jj — 3, 4) is a unique terrestrial species of S. 

 America, and has been described by Merl (191 5). The traps are 

 very small (0.3 mm.). The lower lip projects as a strong bifurcated 

 rostrum, the arms extending laterally. The upper lip forms a short, 

 slightly upturned beak. The middle piece of the door is exceptionally 

 thick and bears a single tripping hair (Merl). This consists of a thin 

 stalk and a disc shaped basal cell and a capital of spindle shape. It pro- 

 jects straight forward (Lloyd 1932a). The internal glands are few in 

 number but large. 



A small group of species from India, East Indies and Australia in- 

 cludes U. lateriflora, U. simplex (Australian), U. calliphysa (Borneo) 

 and two probably unnamed species from India and Ceylon, all terres- 

 trial and small in size (jj — 5-9). The minute (0.3-0.5 mm.) traps 

 have a pronounced upper rostrum and a row of short glandular hairs 

 on each side of the trap leading up to the lower angles of the entrance. 

 Sometimes there is a frieze of low tubercles on each side above the 

 mouth (Stapf). The tripping hairs (jj — 8) stand in a prominent 

 group, marked by sessile, transversely long capitals on the upper part 

 of the door. The internal glands are few but large. 



We shall now speak of that variety of traps represented in the fore- 



