1688 



AK130KETUM AND FRUTICETUJM. 



PA11T III. 



being glutinous, in their hoary appearance, and in the absence of tufts of hair 

 in the axils of the nerves of the leaves. It was introduced into England 

 in 1780, but has not been much cultivated. There are plants at^Messrs. 

 Loddiges's 30ft. high. It forms a very handsome tree, and well deserves a 

 place in ornamental plantations. 



Varieties, 



| A. ;'. 2 lacinidta Lodd. Cat., ed. 1836. — The leaves are slightly laciniated. 

 There are trees in the Horticultural Society's Garden, and at 

 Messrs. Loddiges's. 

 1 A. i. :> glafca ; A. glauca Michx, N. Amer, Sj/lv., Lodd. Cat. y ed. 1836; 

 /utnla incana var. glauca Alt. ; Black Alder, Amer. t has the leaves 

 dark green above, and glaucous beneath : the petioles are reddish. 

 According to Michaux, this forms a tree, in the United States, from 

 IS ft. to 20 ft. high. This is one of the most beautiful kinds of the 

 genus. 

 ¥ A. i. 4 anguldta Ait. — Leaves green underneath, with the petioles green. 

 Other Varieties. A. amcrlcdna Lodd. Cat., A. canadensis Lodd. Cat., 

 and A. rubra Lodd. Cat., appear to belong to this species ; but the plants 

 in the Hackney arboretum are so small, that we have not been able to 

 satisfy ourselves that they are sufficiently distinct to constitute varieties. 



& 4. A. serrula v ta Wllld. The saw-leaved Alder. 



Identification. Willd. Sp. PL, 4. p. 336. ; Baum., p. 21. ; N. Du Ham., 2. p. 21G. ; Pursh FL Amer. 



Sept., 2. p. 623. ; Michx. N. Amer. Syl., 2. p. 113. ; Lodd. Cat., ed. 1836. 

 Si/noitymcs- Zfctula serrulata Ait. Hort. Kcw., 3. p. 338. ; B. rugosa Ehrh. Beilr., 3. p. 21 .; Du 



Iioi llurb. Baum., 1. p. 176.; Wang. Amer., p. 86.; ? A. americana Lodd. Cat., ed. 1836; ? A. 



canadensis Lodd. Cat., 1836 ; common Alder, Amer. ; Hazel-leaved Alder. 

 Engravings. Wang. Amer., t. 29. f. 60. ; Abbott's Insects, 2. t. 92. ; Michx. N. Amer. Syl., t. 75. 



£ 1. ; aiid out Jig. l. r >44., on which are exhibited the larva, pupa, and perfect insect of the A r 6ctua 



( Acronycta) hastilifera, Phalae N na hastulifera Abb. and Smith, the American alder dagger moth, 



which inhabits this tree. 



Sjhc. Char., eye. Leaves obovate, acuminate; veins and their axils hairy on the 

 underside. Stipules elliptic, obtuse. ( Wllld. Sp. PL, iv. p. 336.) A shrub, 



1544 



from ', ft. to 10 ft high ; a native of North America, in swamps and on river 

 \< cording to Michaux, it is frequent along the sides of brooks, but 

 abounds mot in pfacefl rovrn-d with stagnant water. Its leaves are of a 

 beautiful green, about 2 in. long, oval, distinctly furrowed on the surface, 

 and doubly denticulated at the ed^e. The wood, when cut into, is white; 



