680 Proceedings of the Royal Irish Academy. 



In the Herbarium there are two specimens, one with part of an 

 immature cone, the other with the whole of a small one, also immature. 

 Both are marked " No. 393, Jeffrey, Picea, sp." One bears a long 

 printed label ; the other, with the entire cone, is marked by my father, 

 "P. Lowii." 



In Kew Herbarium there is a specimen from the Oregon Associa- 

 tion, ISTo. 393, with the printed label, and erroneous date, 1852. 

 Jeffrey's No. 393 is, undoubtedly, the same as grandis, Douglas; but 

 it is extensively cultivated as Picea lasiocarpa. My father has sent 

 me two specimens of it for examination, one marked " Picea lasio- 

 carpa. Introduced by Jeffrey, and described by Mr. Murray," meaning 

 that it is the lasiocarpa of the Oregon Committee. (See Trans. Ed. Bot. 

 Soc, vol. xi. p. 326). Mr. Murray (Syn. Var. Conif. p. 24) is quite- 

 correct in stating that Jeffrey's No. 393 is Douglas's grandis, and not 

 lasiocarpa. A specimen of lasiocarpa, received from Mr. Barron of 

 Elvaston, through Dr. Masters, is also grandis ; hence Mr. Barron's 

 conclusion that lasiocarpa only equals grandis. 



Lasiocarpa of the Oregon Committee, Jeffrey, No. 409, is a different 

 plant, already noticed as amabilis. 



I have examined sixteen specimens — ten cultivated, and six na- 

 tive — of Picea grandis, Douglas, and have received it under three diffe* 

 rent names : 



A. grandis, Hort. Edin., Hort. Grlasnevin., Hort. Barron. 

 P. lasiocarpa, Hort. Edin. 

 P. amabilis, Hort, Glasnevin. 



There is a specimen in Kew Herbarium from Dr. Lyell, marked^ 

 "Abies grandis, Dgl. ?," from the Columbia River, lat. 46°-49° N. 



A specimen in the Edinburgh Museum, marked "grandis," fi'ont 

 Mr. Andrew Murray, is Lowiana. 



5. Pinus (Abies) Lowiana, Gordon, Supp. to Pinetum, p. 53; A.. 

 Murray, Syn. of Var. Conif. p. 27. A. Parsoiisiana, Hort. A^ 

 lasiocarpa, Hort. 



Shoots hairy. Leaves inserted singly all round the stem, but bent 

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

 upwards. Leaf linear, twisted at the base, some only slightly, others- 

 twisted throiigh half a turn, width nearly uniform, apex rounded and 

 emarginate, upper surface bright green, with 6 or 7 (or fewer,) rows- 

 of stomata in a central band, beneath with a band of stomata on each 

 side of the midrib, there being from 9 to 10 rows in each band. Leaves 

 1 to 2 inches in length, and about i\ inch wide. Buds covered with 

 resinous brownish scales. 



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

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

 furrow, below without a prominent midrib. Hypoderma well deve- 

 loped at the margins of the leaf ; scattered cells under the tipper epi- 

 dermis, and a few cells below, under the fibro-vascular bundle. The- 



