HoLLOWAY. — Stiidies in the New Zealand Species of Lycopodiuni. 283 



tissues of the protocormous rhizome. Ihe leaves on the young stem-axis 

 are in nowise different from the protophylls on the protocorm proper or 

 on the rhizome; in fact, the ordinary vegetative leaves of the adult plant 

 also have much the same form. The protocormous rhizome of this species 

 is a persistent organ, owing to its large size and firmness. It may be 

 recognized at the base of the stem of young plants which are 2 in. or 

 even more in height. 



L. cernuum. 



The young plant of this species has been fully described by Treub, 

 so that in this paper mention Avill be made only of such features as seem 



1^1 



Z'p.phls 



Figs. 75-78. — Lycopodiuni laterale. Young plants with developing stem-axis and per- 

 sisting protocorm. X 3. 



Fig. 79. — Lycopodiuni cernuum. Young plant, showing initiation of first root. X 12. 



Figs. 80, 81. — Lycopodiuni cernuum. Young plants with developing stem-axis and 

 adventitious roots. 80, X 6 ; 81. X 3. 



Fig. 82. — Lycojjodiuni densum. Lower region of stem of young plant, showing foot 

 and first roots, x 4. 



Fig. 83. — Lycopodium densum. The foot shown in fig. 82. x 40. 



Fig. 84. — Lycopodium fastigiatum. Model of embryo of young plant, showing relative 

 positions of foot and suspensor to the rudiments of the root, stem, and first 

 leaf. X 105. 



to be noteworthy for the purpose of a comparison with the young plant 

 of the last species. The general form of the protocorm and first proto- 

 phylls will be seen in figs. 17-19, 21, and 21a. In L. cernuum, as a rule. 



