Octandria . 
79 
where it sometimes varies in colour, and with double 
flowers, 
Epilobium, Gen. char. — Cal. four-cleft ; petals four; 
caps, oblong, inferior ; seeds downy. 
Ep. Angustifoiium, Rosebay Willow-herb, or French 
Willow ; with scattered linear lanceolate leaves, une- 
qual flowers, and declining stamens. "Native of Bri- 
tain, and common in gardens and shrubberies. 
Ep. Hirsutum, Great Hairy Willow-herb, or Codling 
and Cream ; with leaves half embracing, ovate, lanceo- 
late : stem much branched. Common in moist and 
shady places, as in the ditches round Edinburgh, 
Ep. Tetragonum , Square-stalked Willow-herb; with 
lanceolate toothed leaves, and square stem. On the 
sides of ditches, and in marshy places. 
Oenothera. Gen. char . — Cal. four-cleft ; petals 
four; caps, cylindrical, inferior ; seeds naked. 
Oen. Pumila, Dwarf Oenothera, or Tree Primrose ; 
with lanceolate, obtuse, and smooth leaves ; native of 
North America, and the smallest of this tribe of plants ; 
is a hardy perennial, and continues to blossom through 
the summer. 
Oen. Longiflora, Long-flowered Tree Primrose ; with 
toothed leaves, simple hairy stem, and two-lobed petals. 
Native of Buenos Ayres, and rising to more than five 
feet in height ; forms a fine ornament to an open border, 
where it flowers from July to October. Bot. Mag. 3 65 . 
Oen. Biennis t Biennial Tree Primrose ; has been 
long an inhabitant of the garden, and possesses the re- 
markable peculiarity, as well as the preceding, and some 
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