CHAP. CXI1I. 



CONI'FERJE. 



2319 



Sect. ii. / '-eaves jlat, generally glaucous beneath^ imperfectly 



2-rowed* 

 1 7. A. DOUGLA V S// Lindl. The trident- bracted, or Douglas's, Spruce Fir. 



Identification. Lindl. in Penn. Cyc., 1. p. 3'J. 



Si/nunumes. P. texifblia Lamb. Pin., ed. 2., 2. t. 47., Pursh Fl. Amer. Sept., 2. p. 640. ; A. Califor- 

 nia Sort. ; Plnus Dougl&stf Sabine MSS., Lair.b. Pin., vol. 3. t. 90. ; the Nootka Fir, Smith in Rees's 

 Cyc., No. 28. 



Engravings. Lamb. Pin. ed. 2., 2. t. 47., and vol. 3. t. 90. ; our fig. 2230., from a specimen and 

 skt-tch sent to us by Mr. M'Nab, jun., of the Caledonian Horticultural Society's Garden ; and the 

 plate of this species in our last Volume, taken from the young tree in the London Horticultural 

 Society's Garden, and from a drawing in the possession of the Horticultural Society. 



Spec. Char., fyc. Leaves flat, blunt, entire, pectinate, silvery beneath. Cones 

 ovate-oblong. Bracteas elongated, linear, 3-pointed. (Z). Don in Lamb. 

 Pin.) Leaves from 1 in. to 1 in. long. Cones from 3| in. to 4 in. long, 

 and lin. to If in. broad; scales, without the bractea, l|in. long, and 

 the same broad; with the bractea, If in. in length. Seed, with the wing, 

 | in. long, and fin. broad; without the wing, A in. long, and f\in. broad. 

 The seeds are about the same size as those of Picea pectinata, but more 

 oblong. Cotyledons, ?. A native of the north-west coast of North Ame- 

 rica, where it was discovered by Menzies about 1797, and afterwards by 

 Douglas, who introduced it in 1826. It flowers at Dropmore in May. 



Varieties. Pursh states that he has among his specimens two varieties, or 

 probably distinct species, which, for want of the fructification, he can not 

 decide upon. One has acute leaves, green on both sides ; and the other 

 emarginate leaves, glaucous beneath. The seedling plants of A. Douglas;'?', 

 raised in England, exhibit some difference in the length and width of their 

 foliage ; but, as far as we have observed, none worthy of being propagated 

 by extension as a distinct variety. Mr. M'Nab, jun., and Mr. Lawson, how- 

 ever, inform us that there is a very distinct variety in several gardens in 

 the neighbourhood of Edinburgh, which was raised from seeds sent home 

 by Drurnmond. The largest specimen is in the collection at Lahill, near 

 Largo, in Fife, where it is 1-tft. high; and there is one in the Caledonian 

 Horticultural Society's Garden, under the name of A. faxifolia, which, in 

 1837, was 5 ft. high. From what Mr. M'Nab, jun., told us, it may be 

 described as follows : 



t A. D. 2 taxifolia. Stem and side branches straight ; while in A. Don- 

 glasw they are always, when young, more or less in a zigzag direction, 

 though they become eventually straight. Leaves twice the length 

 of those of A. Douglas/?, and of a much deeper green. Fig. 2230, 

 is from a specimen and a 

 sketch received from Mr. 

 M'Nab, showing the foliage 

 and manner of branching of 

 A. Douglass in the Cale- 

 donian Horticultural So- 

 ciety's Garden, and which 

 corresponds exactly with 

 the trees of this name in the 

 London Horticultural So- 

 ciety's Garden, and at Drop- 

 more. Fig. 2231. is from a 

 sketch of the mode of rami- 

 fication and of the foliage of 

 a tree named A. /axifolia in 

 the Edinburgh Botanic Gar- 

 den, and which was raised 

 from seeds received from the late Mr. Thomas Drummond, after 

 the arctic expedition. It is, Mr. M'Nab observes, an upright-growing 

 tree; and, with its long and dark leaves, very distinct from all the 

 specimens of A. Douglas that he had seen elsewhere. The tree 

 7 L 



22.30 



