632 Neiv hardy Trees and Shriibs 



It may be here worth recording, for the benefit of those who have corre- 

 spondents in Mexico, that the following three species were found by M. 

 Hartweg, who was unable to procure any ripe seeds at the time, and are 

 fully described by Mr. Bentham in his valuable PlantcB HartwegiancB, p. Si., 

 from dried specimens sent home by M. Hartweg. These make no less 

 than seven new pinnate species of (Mahon/a) berberries found by him in 

 Mexico. 



Berberis (Mahonia sp. Arb. Bi-it.) lanceoldtum 'Renth. PI. Harhv., p. 34. 

 No. 269. This is the handsomest of all the Mexican species yet known, and 

 very distinct. It has the long slender leaves of B. [M.] tenuifolium, but the 

 leaflets are very spiny, dark green, and there are from 13 to 17 leaflets on 

 each leaf. The plant grows from 3 ft. to 6 ft. high, and was found by M. 

 Hartweg on the mountains of Apulco in Mexico, and at the Contaders be- 

 tween Tula and St. Barbara, flowering in April. It would be a great addition 

 to the beautiful pinnate species if introduced, and probably is quite hardy. 



Berberis (Mahonia sp. Arb. Brit.) angustifdlia Hartw. MS. Bentli. PI. 

 Hartw., No. 270. Another very distinct but small species in the way of B. 

 [M.] fascicularis, but very much smaller in all its parts ; with from 5 to 7 leaflets 

 on each leaf, which are very spiny, and of a light green colour. It was found 

 by M. Hartweg at a place called Pachuca, near Actopan in Mexico, growing 

 6 or 8 feet high, with purple fruit, which is said to be very sweet. It still re- 

 mains to be introduced. 



Berberis (Mahonk sp. Arb. Bi'it.) Hartwegn Benth. PL Hartw., l^o. 272. 

 This has the largest and finest foliage of all the Mexican species as yet 

 known ; the leaves are very large, having from 11 to 15 leaflets, which are 

 nearly double the size of those of B. [M.] Jquifolium, and of a bright green 

 colour, much resembling that species. It also remains to be introduced. 

 M. Hartweg found it at a place called Tula and at Santa Barbara in Mexico, 

 flowering in April. 



AcBRA"CEjE.—~A.''cerlcevigdtm7iWa\\. Arb. Brit., p. 4^31. A very distinct 

 species of A^cer, belonging to the same section as the beautiful, but certainly 

 tender, A. oblongum of Dr. Wallich, but differing from that species in having 

 the leaves numerously and deeply serrulated, of a dark shining green, and in 

 not being glaucous on the under side. It is found on the loftiest mountains 

 of Nepal, growing about 40 ft. high ; and, according to Dr. Wallich, will be 

 quite hardy. It was raised in the garden of the Society, from seeds received 

 from Dr. Royle. 



A^cer colchicum Booth MS. This is a very handsome and distinct 

 maple, more like A. [p.] Lobelw than any other species that I am acquainted 

 with ; but diflTering from it in having the lobes of the leaves more pointed, 

 the bottom lobes lapping over the footstalk, and in being mucronate. The leaves 

 are also five-lobed, of a bright glaucous green, and not quite so large as 

 those of A. [j3.] LobelM. It was received from Messrs. Booth of Hamburg, 

 under the above names; but I have not been able to find any such name 

 published, nor is any such name to be found in their catalogue. I suppose 

 the plant must be from Colchis in Asia, but it is quite new to me. 



iJuTA^CE^E. — Jiiita [graveolens] angustifdlia Persoon. Arb. Brit., p. 487. 

 fig. 156. This is nothing more than a narrow-leaved variety of the i?uta 

 graveolens ; the leaves are much more glaucous, very narrow, and the plant 

 altogether is distinct, being intermediate between R. graveolens and R. mon- 

 tana. The plant is as hardy as R. graveolens, and much stronger-scented. 

 There seems some confusion about R. [g.] chalapense, which is only another 

 varietjr of the common rues, as well as R. [g.] montana. 



i?HAMNA^CE^. — ^hdmniis Wickliu.s Jacquin. This species belongs to 

 the same section as R. infectorius and R. catharticus. It was raised from 

 seeds received from Dr. Fischer, and seems tolerably distinct from R. infec- 

 torius, having larger leaves. The plant is quite hardy. 



Anacardia^cEj3S. ^-Duvaifa. longifblia. This very distinct species has long 

 bright green leaves, and belongs to the same section as Duvaua latifolia Lindl. 

 Bot, Reg. t. 1580. It was raised at the Clapton Nursery, from seeds col- 



