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VI. Leaves irregularly arranged ; those on the lower side of the branches not truly pectinate.

24. Abies Pindrow, Spach. W. Himalayas. See p. 755.

Leaves all directed more or less forwards ; those above irregularly and imperfectly covering the branchlet ; those below mostly pectinate, but with some directed downwards and forwards. Leaves soft, pale green, up to 24 inches long, bifid at the apex with two sharp cartilaginous points; resin-canals

marginal. Shoots grey, glabrous. Buds large, globose, resinous.

25. Abies concolor, Lindley and Gordon. Colorado, Utah, Arizona, New Mexico, Northern Mexico, Southern California. See p. 777.

Leaves imperfectly pectinate both above and below, some in the middle line being always directed forwards and not laterally outwards; up to 2 to 3 inches long; apex entire; upper surface convex and not grooved, bearing fifteen to sixteen lines of stomata; resin-canals marginal. Shoots smooth, olive-green, glabrous. Bud large, conical, resinous.

26. Adzes lastocarpa, Nuttall. Western N. America. See p, 800.

Leaves either (A) in an imperfect pectinate arrangement, or (B) with most of the leaves directed upwards, those in the middle line above crowded, and standing edgeways; 1% inches long, narrow, usually entire, with conspicuous lines of stomata on the upper surface, especially in its anterior half. Resin-canals median. Shoots smooth, with a moderately dense, short wavy pubescence. Buds small, conical, resinous.

Four species, A. Delavayi, Franchet;* A. Fargesii, Franchet ;? A. sguamata, Masters;° and A. recurvata, Masters;* occur in the mountains of western China and are not included in the above list. The two first species are reported by Masters to have been introduced by Wilson ; but, on inquiry, we find that only one species of Abies from China is now growing in the Coombe Wood nursery. It is probably A. Fargesi; but, as the plants are still very young, we are uncertain of this identification, and think it best to leave this species undescribed for the present. (A.H.)

1 Journ, de Bot. 1899, p. 255; Masters, Gard. Chron. xxxix. 212, fig. 82 (1906).

2 Journ. de Bot. 1899, p. 256; Masters, Gard. Chron. xxxix. 212, fig. 83 (1906).

3 Gard. Chron. xxxix. 299, fig. 121 (1906), and Journ. Linn. Soc. (Bot.), xxxvii. 423 (1906).

4 Journ. Linn, Soc. (Bot.), xxxvii. 423 (1906).