BY R. s. rogp:rs and c. t. white 141 



almost half its length ; spur very short (al^out as long as 

 the column), ovoid. Column very short ; anther canals 

 short, glands 2 ; pollen sectile ; stigmatic processes ovate, 

 minute, on each side of the l)ase of the column. 



Habitat. Dunk Island, E. J. Banfield. 



This species in its general habit is very unlike H. 

 Banfieldii, Bail, and H. divaricata, Rogers and White, 

 which come from the same locality. It is more slender, 

 with foliage more definitely basal and a much less bract- 

 eated stem than either of these si:)ecies. In H. Banfieldii 

 the labellum is traversed from the base almost to the tip of 

 the middle lobe by a linear oblong callus ; whereas in this 

 new species the callus is almost quadrate and confined to 

 the lower half of the claA^^ In H. Banfieldii the middle 

 lobe is wider and at least as long as the lateral lobes ; Avhereas 

 in H. ovoidea the middle lobe is laarrower and much shorter 

 than the other segments. The stigmatic processes are 

 cristate and much longer, but the flowers relatively smaller, 

 in H. Banfieldii than in the new species. The sj^ecific 

 name ovoidea has reference to the egg-shaped spur, a feature 

 which it shares in common with H. Banfieldii. 



Key to Australian Species. 

 The following analj^tical table will serve to show the 

 relation of the different Queensland species to other Aus- 

 tralian Habenariae. 



Petals bipartite. 



Stems leafy. Labellum 3-partite ; segments equal, 

 narrow-linear, divergent. Spur filiform, 

 inflated at apex, as long as ovary (7 mm.) //. trinervis 



Petals undivided. 



Spur more or less filiform-clavate, 8 mm. or more in 

 length. Labellum deeply tripartite ; segments 

 long, narrow-linear or fillifomi. 

 Spur 2.5 cm. (1 inch) or more in length. Leaves 

 basal or nearly so. 

 Segments of labellum linear ; lateral ones much 

 shorter than central one. Lateral 

 petals sometimes notched. Stigmatic 

 processes horizontal terete, cristate....//, elongata 



Segments of labellum filiform ; lateral ones 

 about 2.-5 cm (1 inch); middle one 

 shorter. Stigmatic processes erect, with 

 white, globose heads H. Millari 



