of Splachnum luteum. 
9 
EXPLANATION OF FIGURES IN PLATES 
I AND II. 
Illustrating the paper of the late Mr. J. Reynolds Vaizey on the Morphology of 
the Sporophyte of Splachnum luteun . 
The descriptions are based upon short notes written by Mr. Vaizey upon the 
margins of the drawings. 
Fig. I. Mature Plant of Splachnum luteum. c = oophyte. sp — sporophyte. 
s = seta, a p = apophysis, c = capsule. ( x 2 ) . 
Fig. 2. a— i successive stages of development of the sporogonium, illustrating 
the mode of origin of the discoid, or bell-shaped apophysis, a — e are slightly 
enlarged, f—i are natural size, h is an old specimen in which the apophysis 
has become discoid. 
Fig. 3. Transverse section of the foot of the sporogonium (/) and of the vaginula 
( v ). The cells of the leptophloem, which are shaded, are full of protoplasm 
in the upper and middle part of the foot, in sections from the lower part they are 
empty. The cells within this layer are the leptoxylem ; they are empty and 
perform the function of conducting water. [N. B. The cell-contents of the 
external layer of the foot, though referred to in the text, are not drawn in this 
figure, but they are shown clearly in fig. 4.] Crouch § , oc. 4, reduced to two- 
thirds. 
Fig. 4. This figure was not named by Mr. Vaizey, but it is believed to represent 
the external epidermal layer of columnar cells referred to in the text, in contact 
with the tissue of the vaginula. The MS. description is as follows : ‘ N. B. Little 
round bodies are plastids, stained with Hoffman’s blue, and haematoxylin, not 
stained by methylene-blue.’ Zeiss F, oc. 2. 
Fig. 5. Apex of the foot of Splachnum luteum within the vaginula, as seen in 
longitudinal section. No magnifying power is stated. 
Fig. 6. Transverse section through the central strand of the foot, from a section 
stained with haematoxylin. /. ph = leptophloem. /. xy = leptoxylem. Crouch 
oc. 2 (reduced to f). 
Fig. 6 bis. Longitudinal section of part of the central strand of the foot of 
Splachnum luteum , and of the cortex ( c ) immediately surrounding it. Mr. Vaizey 
notes that the section is ‘ not median but distinctly tangential, the faint lines in the 
leptoxylem (/. x) show where the cells next to those in section join on.’ 1 . ph 
«= leptophloem. Crouch ^ obj., oc. 1, reduced to two-thirds.) 
Fig. 7. Central part of a transverse section of the seta between 1 and 2 
centimetres above the vaginula, showing the central strand of thin-walled cells of 
water-conducting tissue. Zeiss F, oc. 2, reduced to two-thirds. 
Fig. 8. Transverse section of the mature seta of Splachmun luteum , showing the 
central lysigenous intercellular space. (Zeiss D, oc. 2.) 
Fig. 9. Median longitudinal section of the upper part of the sporogonium. 
^ = seta. ap — apophysis, c. s — central strand. ^ — stomata. M = mesophyll. 
C — capsule, cl = columella. As = archesporium. I = intercellular space. 
P== peristome. The area enclosed in the dotted lines is drawn on a larger 
scale in Fig. 10. 
