thin w. c. Thin-walled cells. 

 to. st. Mech. stereom. 



372 Transactions. — Botany. 



Pig. 7. 

 (a.) Tranverse section of half of stem of C. flagelliformis. All the 

 cells are filled in, in order to show more clearly the arrangement of the 

 tissues. 



ep. Epidermis. 

 chl. Chlorenchyma. 



(6.) Surface section of epidermis of stem, with alternating strips con- 

 taining stomata, and devoid of them. 



(c.) Transverse section of part of stem of C. flagelliformis, including 

 one vascular bundle. To show thickening by formation of libriform 

 tissue (I. t.). 



Pig. 8. 



Shoot of C. monroi ; life size. Transverse scars are scales. 



Fig. 9. 



Lettering same as in 7 (a). In upper half of the section the vacant 

 spaces represent mechanical stereom which has not been filled in, in 

 order to show more clearly the structure. In lower half of the section 

 the chlorophyll granules have been omitted for the same reason. 



Fig. 10. 



(a.) Transverse section of stem of C. nana. Same lettering as in 

 7 (a) ; air c. = air-cavity. 



(b.) Longitudinal section as through dotted line 1 to 2 in 10 (a). 

 Same lettering as in 7 (a) ; also, — 



s. t. Sieve-tube \ 



cm. Cambium 



p. v. Pitted vessel |- Vase, bundle. 



w. c. Woody cell 



sp. v. Spiral vessel ' 



Note. — The sections of different stems are not drawn to a strictly 

 proportional scale of size. 



Aet. XLIV. — Note on Hybrid Ferns. 

 By H. C. Field. 



[Read before the Wellington Philosophical Society, 18th November, 



1902.] 



About three weeks ago Miss E. Creswell, of Te Horo, sent 

 me a specimen of a fern which she could not class, and which 

 she wished me to name for her. It was like Hymenophyllum 

 demissum, but she said it had stellated tomentum on the 

 stipes, rachis, and costae. Except that it had those parts less 

 glossy than usual, and was of a darker colour than ordinary 

 (probably from having been grown in deep shade), I could see 



