M'Nab — A Revision of the Species of Abies. 695 



TDeneath with, a band of stomata on each side of the midrib, there 

 "being from 7 to 8 rows of stomata in each band. Leaves from 1 to 

 \^ inch in length, and about -iV inch wide. Buds covered with 

 yellowish-brown resinous scales. 



Transverse section of leaf. — Leaf flattened, about 31 times as 

 broad as thick, sides rounded, upper surface with a very slightly 

 marked longitudinal fun-ow, below without a prominent midrib. 

 Hypoderma conspicuous, forming a single, more or less interrupted 

 layer, rimningfrom the resin-canal of one side, under the epidermis of 

 the upper side of the leaf, to the resin-canal of the other side ; there 

 is also a small row beneath the epidermis in the middle line below. 

 The resin-canals ai'e placed, one on each side of the leaf, near the 

 margin and close to the epidermis of the under side of the leaf. The 

 pallisade tissue is well developed on the upper side of the leaf, while 

 TdcIow is the parenchyma, with intercellular spaces communicating 

 with the stomata. 



Pibro-vascular bundle double, the whole suiTOunded by a well- 

 marked sheath. 



The figure (Plate 48, fig. 23) is drawn from an original speci- 

 men of Kotschy's, No. 370, in the Herbarium of Trinity College, 

 DubKn, kindly given to me for examination by Professor Perceval 

 Wright, M.D. 



I have only examined three specimens of this pine — one from Mj. 

 Syme, of Elvaston iN'urseries ; one from Glasnevin ; and the thii'd from 

 Trinity College, Dublin, Herbarium, collected by Kotschy in Syria : 

 " inregionibusDanias, supra Eden, alt. 5000. Die 28 Jul. 1855." Ana- 

 tomically it is the same as P. jS^ordmanniana ; but I have not seen the 

 cones, and so cannot give any definite opinion as to its distinctness. 

 Bertrand *' says of this species: "Pas d'hypoderm sous I'epiderme 

 superieur." In all my specimens the hypoderm is well developed, so 

 that probably Bertrand has made some mistake. 



There is a cone in the Museum, Royal Botanic Garden, Edinburgh, 

 measuring 6 inches by 2 inches, and marked "Abies cilicica. Crimea, 

 P. Lawson & Sons, 1856." It has no leaves, but after most careful 

 examination I have no hesitation inreferring the cone to Abies bifolia, 

 Murray, — the P. lasiocarpa, Hooker. 



21. Pinus (Abies) cepiialonica. Endl., Cat. Hort. Acad. Yindob. i., 218. 

 Pimcs (Abies) (3. cephalonica, Pari., D. C. Prod, xvi., 2, p. 422, 

 "No. 92. Abies cephalonica, Link., Linnaea, 15, p. 529. Picea ce- 

 pJialonica, Loudon, Encyc. Trees, 1039. 



Shoots smooth. Leaves inserted singly all round the stem, but 

 bent so as to form two lateral rows, many pointing upwards, very 

 few projecting downwards; the leaves at the sides of the shoot are 

 twisted at the base ; those above and below are not, or only very 



* Auat. Comp. des Gnet. et Conif. p. 89. 



