THE ANATOMICAL STRUCTURE OF THE LEAF. 107 



No. 3. Pseudotsuga Davidiana, Bertrand. 



A species from Thibet, unknown to me, and described by Dr 0. 

 E. Bertrand, op. cit., p. 82. It is not in cultivation. 



No. 4 (111). Pinus (Pseudotsuga) Douglasii, Sabine, Pari. 



The characters of specimens of Douglasii seem variable, and I 

 have seen two distinct plants under this name. The large plant 

 in the Royal Botanic Garden, Edinburgh, may be taken as the 

 type of the one form. The other I have only seen herbarium 

 specimens of, one from Kew, and two from the herbarium of 

 Trinity College, Dublin. These latter — the herbarium specimens 

 — are all distinguished by the presence of remarkable star-like, 

 thickened cells of large size lying in the parenchyma of the leaf. 

 The specimen from Kew Herbarium is from the Rocky Mountains, 

 and marked " Douglasii ? " The next, from Trinity College Her- 

 barium, is from New Mexico, C. Wright (No. 1885). The third 

 is from the same herbarium, and was collected by Fendler in New 

 Mexico (No. 829). Parlatore cites this plant as belonging to 

 P. amabilis, but it is anatomically identical with Wright's specimen 

 referred by Parlatore to Douglasii. Further observation is wanted 

 to clear up the difficulties in the synonymy. 



No. 5 (112). Pinus (Pseudotsuga) Fortunei, Pari. 

 Abies Fortunei, Lindl. 

 Abies Jezoensis, Hort. 



Leaves long and pointed. No stomata on the upper side of the 

 leaf. Hypoderma not very well developed. Resin canals close to 

 the lower epidermis. 



A very distinct form, most closely related to Abies Veitchii 

 (Hort., Veitch), A. Harryana mihi, differing only in the larger leaf 

 and single fibro- vascular bundle. I am indebted to Messrs Veitch 

 for the only living specimen I have seen. It is well described and 

 figured by Mr Andrew Murray in his " Sketch of the Conifers of 

 Japan." 



