Telangium ( Calymmutotheca ) showing Structure. 177 
EXPLANATION OF THE FIGURES IN PLATE XI. 
Illustrating Miss Benson’s paper on Telangium. 
Telangium Scotti, figs, i-io inclusive. 
h, h' = groups of cells (which tear on dehiscence), as seen in transverse section between the 
sporangia. 
/, /' — lacunar tissue. 
s , s' == fusiform empty cells with scalariform marking, which form the hypodermor fibrous layer. 
x, x' — parenchyma cells interrupting here and there the otherwise uniform fibrous layer. 
cp = free apex. 
Fig. 1. Longitudinal, somewhat tangential section of the synangium. x 33. A few spores can 
be seen in the sporange on the left. Slide M.B. Coll. 71. 
Fig. 2. Transverse section of the synangium but little above the insertion of the sporangia. Two 
of the latter are injured. The fibrous layer does not extend over the whole surface at this level. 
Slide lent by Professor Oliver. U.C.L. Coll. K 3 (b). 
Fig. 3. Transverse sections of two synangia at a higher level, x 50. The fibrous layer is 
now complete. The group of cells ( h ) remain undehisced. This preparation also shows the ex- 
tension of the parenchyma to the surface at x and x'. Slide lent by Professor Oliver. U.C.L. Coll. 
k 3 (4 
Fig. 4. A and B are transverse sections of two nearly approximating synangia which are taken at 
different levels, x 33. 
Fig. 4. A is taken below the level of insertion of the sporangia and shows a vascular strand v, 
composed of very small elements. These are reproduced in a larger scale in Fig. 4 C. x 50. 
Slide lent by Dr. Scott, C.N. 1803. 
Fig. 5. A and B are transverse sections of the same two synangia represented in Fig. 4 A and B } 
but at a higher level. Some of the spores are well preserved. Slide lent by Dr. Scott, C.N. 1804. 
Fig. 6. Spores, x 260. Fig. 6, a , h, c, d, are taken from the sections of Scotti , and fig. 6, <?,/, g, 
are taken from the pollen-grains in the pollen-chamber of Lagenostoma ovoides. In a and g can be 
seen well the reticulation of the coat. U.C.L. Coll. M 21 (a); also M.B. Coll. 62, 63, 70. 
Fig* 7 * x 10. Transverse sections at different levels taken from a Hough Hill specimen. The 
dotted lines are merely intended to suggest the relation of the sections. M.B. Coll. 74 a , 74 b. 
Fig. 8. This is an admirable longitudinal section of a portion of a synangium showing apex 
and base of one sporangium, x 33. M.B. Coll. 70. 
Fig. 9. A transverse section through Telangium Scotti and Lagenostoma Lomaxi to show their 
close association as petrifactions, c — canopy, n — nucellus. Slide 603, from the Collection of the 
Manchester Museum, Owens College. 
Fig. 10. Diagram constructed by superposing the different transverse sections, x 4. 
Fig. 11. Calymmatotheca Stangeri (natural size), showing three terminal clusters and thorn-like 
emergences, e — emergences (after Stur). 
Fig. 12. Telangium affine, x 4 (after Peach) . a, shows a pair of synangia growing closely 
adpressed in parallel planes, b , a single synangium. 
Fig. 12 a, explains the relative position of pedicel and synangium in Fig. 4. 
N 
