210 BOTANICAL GAZETTE [SEPTEMBER 
Fic. 46. Early stage in the formation of an axillary brood-body. Xx 130. 
Fre. 47. Mature brood-body with its stalk. x 130. 
Fic. 48. Protonema grown from the stem, and showing two lateral 
branches often coming from a single cell of the main axis. X 53-. 
FG. 49. Protonema with a brood-body, similar to those produced in the 
leaf axil. K 130. 
Phascum cuspidatum. 
Fic. 50. Leaf showing origin of protonemata and the formation of a new 
leafy shoot. X 27. 
Fic. 51. Cross section of a leaf showing the origin of a protonema from 
a cell of the ventral surface. xX 22 
FIG. 52. Portion of a protonema with a bud. (d@) Cells just above the 
costa. X 220. 
fissidens bryoides. 
1G, 53. Bud grown from the leaf axil of a defoliated stem without the 
intervention of a protonema. Xx 220, 
Fig. 54. Rhizoid grown from a defoliated stem in the dark with perpen- 
dicular cross-walls produced by intercallary growth. x 130. 
