THE DEHISCENCE OF ANTHERS BY APICAL PORES. 185 



Liliaeeae. 



Of the Liliaceae, five genera may be mentioned : 

 Walleria (three species, or perhaps only three varieties of 

 the same species, in tropical Africa, with 1 extending into 

 South Africa, and another from Madagascar) is one of the 

 finest illustrations of this type which I have seen. Agros- 

 tocrinum (1 Australian species) is another good represen- 

 tative with somewhat zygomorphic flowers. Dianella (11 

 species, 1 widely distributed in the Mascarine Islands, 

 tropical Asia, Australia, New Caledonia and the Sandwich 

 Islands, 8 more in Australia, 1 in New Zealand, Norfolk 

 and Fiji and Society Islands and 1 in the Isle of Pines and 

 New Caledonia), with variously thickened filaments and 

 anthers in which the pores are sometimes continued down- 

 ward in introrse longitudinal slits, also belongs here. The 

 flowers of Cahctasis (1 "West Australian species) are 

 among the most beautiful of those assigned to this type. 

 Luzuriaga is a highly interesting genus of South Pacific 

 or antarctic distribution. Four species are described. In 

 three species (of which 1 is confined to New Zealand, 1 

 occurs in Patagonia, Tierra del Fuego, Falkland Inlands and 



Chile and Peru) 



flowers have a very close similarity to other members of 

 the Solanum-Cassia type, but dehiscence seems to be by 

 longitudinal slits, although it has been described as by 



pores and it may 

 ous other forms. 



) 



( 



ure. The anthers 

 are borne on longer filaments and at the time of flowering 

 are reflexed and open, at least at first, by two basal pores. 

 The reflexed stamens are quite closely approximated 

 around the ovary so that the general habit of the flower 

 agrees very closely with that of many other forms in this 



clas 



Odontostomum is an aberrant form from California which 



will be considered later- 



