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i • Be t u L A- A l n u s glauca. Silver- leaved 
Alder . 
This grows naturally in low marfhy ground, and 
frequently rifes to the height of ten or twelve feet. 
2. Betula-Alnus maritima. Sea-fide Alder . 
This grows to the height of the former. The 
leaves are long and narrow. The katkins are gene- 
rally in bloom in xAuguft, at which time the female 
cone or feed-veflel fets, but don’t grow to perfection 
till the next fummer. 
3. Betula-Alnus rubra. Common Alder . 
This grows very common in lrioft parts of Penn- 
fylvania. The leaves are broader than the other 
kinds, and rough or wrinkled. This flowers in the 
fpring, and perfects its feeds in the fall. 
BIGNONIA. 
The TRUMPET FLOWER 
Clafs 14. Order 1. Didynamia Angiofpermia. 
T^HE Empalement is of one leaf, erett, cup-form, and five- 
A cleft. 
The Corolla is monopetaious, and bell-ihaped. The tube very 
fmall and the length of the calyx. The chaps very long, 
bellied underneath, and of an oblong bell-fhape. The bor- 
der is five parted; the two fuperior divifions reflexed; the 
inferior fpreading. 
The Filaments are four, awl-iiiaped and fhorter than the corol- 
la, of which two are longer than the reft. The Anthem are 
reflexed, oblong, and as if doubled. 
The Germen is oblong. The Style thread-form, of the fituation 
and fliape of the ftamina. The Stigma is headed. 
The*- 
