THE ANATOMICAL STRUCTURE OF THE LEAF. 103 



the Museum, Royal Botanic Garden, Edinburgh, enables me to 

 state with confidence that A. lasiocarpa (Balf.) is A. amabilis 

 (Dougl.). Mr Murray's figures (pp. eit., p. 34, figs. 1 and 2) also 

 prove the same thing. A. lasiocarpa (Hook.) is a distinct thing, 

 and equals A. bifolia (A. Murray), A. amabilis (Parlatore). 



No. 17. Abies lasiocarpa, Hooker (not Balfour). 



A. bifolia, A. Murray, Syn. var. Conif., p. 31. 

 A. amabilis, Parlatore, De C, Prod., 426, No. 102 (not 

 Dougl.). 



Leaves of two kinds, those on the vegetative branches rounded 

 or emarginate, on the cone-bearing shoots sharp and pointed. Sto- 

 mata on both sides of the leaf. Hypoderma well developed. Resin 

 canals in the parenchyma of the leaf. 



"Very different, anatomically, from A. amabilis, with which it is 

 confounded by Parlatore. It was confused by the Oregon Com- 

 mittee and Jeffrey with Pseudotsuga magnifica, both plants being 

 mixed in Jeffrey's (No. 1480) in the Museum, Royal Botanic 

 Garden, Edinburgh. I have examined Hooker's type specimen in 

 Kew Herbarium, a specimen sent by Douglas in the same Her- 

 barium, five specimens from the Oregon Boundary Commission 

 collected by Dr Lyall in 1860-61, with the native name "Marielp." 

 It is also P. bifolia of Murray. I have examined specimens from 

 M. Roezl, sent to me by Mr Syme. The only living plants 

 observed were seedlings from Elvaston Nurseries. None of the 

 seeds sent out by the Oregon Committee seem to have germinated. 

 A glance at the figures of the bracts given by Mr Murray in his 

 work already quoted, p. 34, figs. 4 and 12, will show that lasio- 

 carpa (Hook.) equals bifolia (Murray). 



No. 18 (103). Pinus (Abies) concolor, Engel., Parlatore. 

 Abies concolor, Lindl. 



Leaves obtuse at the apex, closely covered with stomata on both 

 sides. Hypoderma scanty. Resin canals touching the epidermis 

 of the under side of the leaf. 



A very distinct form, related to Lowiana and grandis, and more 

 distantly to amabilis. I have only seen dried specimens from 

 Engelmann (No. 828) in the Herbarium at Kew and Trinity 

 College, Dublin, and have not as yet seen it in cultivation in this 

 country. Bertrand (op. cit., p. 90) gives the anatomical characters 



