834 



ARBORETUM ET FRUTICETUM BRITANNICUM. 



ohloiig-leaved Alder. 



S2)ec. C/iar., Sfc. 



1515. A. oblongata. 



ISIfj. ^. oblniigata. 



by the exudation of the sap and the admission of the weather, no longer 

 to throw up vigorous shoots, and it will decay in a few years. 



S 2. A. oblonga'ta Wi/ld. The 



Identification. Willd. Sp. PI., 4. p. 335. ; Baum., p. 20. ; 



N. Du Ham., 2. p. 215. 

 Synonymes. ^'Inus fol. oblong., &c., Bauh. ; A. fol. ovato- 



lanceol., &c., Mill- Bid. ed. 7. ; langliche Else, Ger. 

 Engravings. Our fig. 151.5. from a specimen in Sir W. J. 



fiooker's herbarium; and fig. ]5\6. from a specimen in 



the Museum of the Jardin des Plantes. 



Leaves elliptic, somewhat 

 obtuse, glutinous ; axils 

 of the veins naked on 

 the under s\de.(Wi//d.) A 

 large deciduous shrub or 

 low tree. Hungary, Aus- 

 tria, and Turkey. Height 

 20 ft. to 30 ft. Intro- 

 duced in 1749. Flowers 

 greenish ; March and 

 April. Fruit brown ; ripe 

 in October or November. 



Varieti/. 



m ^ A. 0. 2fdlus ellip- 

 ticis Ait. A. pu- 

 mila Lodd. Cat. 

 The leaves are 

 somewhat narrower than in the species. 



3* 3. A. inc.\'na Willd. The hoary-leaved Alder. 



Identification. Willd. Sp. ,P1., 4. p. 335. ; N. Du 



Ham., 2. p. 215. ; Hoss Anleilung, p. 190. 

 Synonynies. B. y^'lnus var. incana Lin. Sp. PI. 1394. ; 



B. incana Lin. Sjtgpl. ; B. viridis fill. Davnh. 2. ,i^^ 



p. 789. ; weisse ErK, graue Else, or weisse LUer, il 



Ger. K 



Engravings. Hayne Abbild., t. 136. ; and our fi.g. \ 



1517. 



Spec. Char., ^-c. Leaves oblong, acute, 

 pubescent beneath ; axils of the veins 

 naked. Stipules lanceolate. {Willd.) 

 A deciduous tree. Lapland, Sweden, 

 and Prussia; and on the hills in Aus- 

 tria, Carniola, the Ukraine, Tyrol, and 

 Switzerland ; also in North America. 

 Height 50 ft. to 70 ft. Introduced in 

 1780. Flowers greenish ; March and 

 April. Fruit brown ; ripe in October. 



Varieties. 



"t A. i. 2 lacimdta Lodd. Cat. ed. 1836, 



niated. Horticultural Society's Garden, 

 i A. i. 3 glauca. A. glauca JMichx. A^. Amer. Sylv. ; ^etula incana var. 

 glauca Ait. ; Black Alder, Amer. The leaves are ilark green above, 

 and glaucous beneath ; the petioles reddish. This is one of the 

 most beautiful trees of the genus. 

 Y A. I. i anguldta Ait. Leaves green underneath, with the petioles 



also of a dark green. 

 Other Varieties. A. americdna Lodd. Cat., and A. canadensis Lodd. 

 Cat., appear to belong to this species ; but the plants in the Hackney ar- 

 boretum are so small, that we have not been able to satisfy ourselves that 

 thev are sufficiently distinct to constitute even varieties. 



1517 



The leaves are slightly 



laci- 



I 



