678 Proceedings of the Royal Irish Academy. 



amabilis, but that the form he really wished to bear this name is now 

 known as Pseudotsuga magnifica. 



I have examined in all eleven specimens of this plant. It has been 

 sent to me from the Eoyal Botanic Garden in Edinburgh as the true 

 amabilis of Douglas, grafts and layers from Douglas' plants being 

 there cultivated. I have also received it from Mr. Syme, of Elvaston 

 Nurseries, as the true amabilis of Douglas, as well as from Mr. "Wat- 

 erer, of Knap Hill i!^ursery. A plant of it was noticed last September 

 by Dr. Moore, of Grlasnevin, growing near Ambleside, in the Lake 

 District. I have also examined five native specimens — three in Kew 

 Herbarium, from the Oregon Boundary Commission : one collected in St. 

 Juan Island, by Dr. Lyell, in 1858 ; another, near Lake Chiluk- 

 weyak, B.C., Cascade Mountains, 49° N. L., Dr. Lyell, 1859; and the 

 third, Cascade Mountains to Port Colville, about 49° N. L., Dr. Lyell, 

 July, 1860. A section of the leaf of one of these is figured (Plate 46, 

 fig. 3, a.) 



In the Museum at the Eoyal Botanic Garden, Edinburgh, there is 

 a cone, about 4 inches long, with a few leaves, marked " Pinus lasio- 

 carpa, 409. California, Mr. Jeffrey, 1853." In the Herbarium is a 

 specimen of the same, marked " Picea sp., JSTo. 409. Mountains east of 

 the Palis of Eraser's Biver, Sept. 27, 1851, Jeffrey." This No. 409, 

 Jeff., is A. lasiocarpa of Balfour and Oregon Committee, as shown by 

 the figure given by Mr. A. Murray, Syn. Var. Conif. p. 25, fig. 34. 

 Prom an examination of both the cone and leaves, I have no difficulty 

 in identifying this plant as being lasiocarpa of Balfour, grandis of 

 Murray, and probably of Lambert, and amabilis of Douglas, as repre- 

 sented in our gardens. No plants of this, Balfour's lasiocarpa, seem to 

 have grown from Jeffrey's seeds. 



Prom the great development of hypoderm, I place this species next 

 to bracteata and religiosa. The cone is unlike that of the two species, 

 and has large bracts, which do not project beyond the scales. 



4. Pinus (Ahies) grandis, Douglas, Bot. Mag. Comp. 2, p. 147 ; Par- 

 latore, D. C. Prod. xvi. p. 427, No. 104 (excl. of syn.). Abies 

 amabilis, Murray, Syn. Var. Conif. p. 20 ; Koch, Dendrologie, 

 vol. ii. pt. 2, p. 211. Abies Gordoniana, Carr. Conif. ed. 2, 

 p. 298; Bertrand, Anat. Comp. Gnet. et Conif. p. 91. 



Shoots smooth. 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, which is slightly narrowed 

 towards the orbicular insertion ; width of leaf nearly uniform, with a 

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

 or very rarely with a small cluster of 3 or 4 near the apex, beneath 

 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 1^ inch 

 long, and about iV inch wide. Buds covered with resinous brown- 

 coloured scales. 



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



