I 



M'Nab — A Rei'ision of the Species of Abies. 703 



supplied to me by Messrs. Veitch and Son, Royal Exotic Xursery, 

 Ohelsea. 



I have only examined one specimen of this plant, received from 

 Messrs. Veitch under the name of Abies Jezoensis. There is no diffi- 

 culty in identifying the specimen with Mr. Murray's A. Fortunei, a 

 Chinese species. It is, however, very like the plant sent out by 

 Messrs. Veitch as Abies Veitchii, and I strongly suspect there is some 

 confusion yet to be cleared up about these Japanese plants. Veitchii, 

 of Hort. Veitch, is not Veitchii of Kew Herbarium, but resembles 

 P. Fortunei, excepting that the leaves are smaller. Veitchii (Hort.) 

 may, therefore, be Jezoensis, and thus P. Fortunei must stand as the 

 name of this most interesting plant. 



5. Pinus {Pseudotsuga) Douglasii, Sabine, Lamb., Gen. Pinus, 2 ed., 

 vol. iii. tab. 21. Picea Douglasii, Link, in Linncea, xv. 524. 

 Psendotsuga Douglasii, Carr., Trait. General des Conif. 2 ed., 

 p. 256. 



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

 bent so as to form two lateral rows, occasionally a few are directed 

 upwards and downwards. Leaf linear, twisted near the base, which 

 is narrowed to the small insertion, breadth uniform for greater part of 

 length, apex rounded, upper surface bright green, with no stomata, 

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

 from 5 to 6 rows of stomata in each band. Leaves from 1 to 1^- inch 

 long, and about iV i^ich wide. Buds covered with yellow resinous 

 scales. 



Transverse section of leaf. — Leaf flattened about 24- times as 

 broad as thick, sides rounded, upper surface with a longitudinal 

 groove, below with a slightly prominent midrib. Hypoderma very 

 variable, in some leaves very well-developed, in others almost absent 

 on upper side. The resin-canals are placed one at each side of the 

 leaf, close to the epidermis of the under side. The pallisade paren- 

 chyma is well developed on the upper side, and below is parenchyma 

 Avith well-marked intercellular spaces. In the parenchyma of the leaf 

 arc developed, in North American specimens only, peculiar stellate 

 idioblasts, which ramify between the ordinary parenchymatous cells. 



Fibro- vascular bundle single, surrounded by a well-marked sheath. 



The figure (Plate 49, fig. 32) is drawn from a specimen supplied 

 by Mr. Syme, which shows the absence of hypoderma in cultivated 

 plants and agrees well with others from Edinburgh and Glasneviu. 

 Plate 49, fig. 32a, represents a specimen of Douglasii from Kew Her- 

 barium. It is marked "Abies sp. nova, Douglasii? Eocky Mountains. 

 Independence Bluff, Nuttall." It has the cone of Douglasii, but the 

 development of hypoderm and idioblasts separates it from all the culti- 

 vated specimens I have yet seen. It is the same as Wright's JS'o. 1885, 

 from New Mexico, which Parlatore refers to P. Douglasii. The third 

 specimen figured (Plate 49, fig. 32b.) isFendler's, No. 829, which Par- 

 latore refers to amabilis. Either the species is variable, or else we 



B. I. A. PKOC, SEE. II., vol. II., SCIENCE. 3 T 



