Lobelia siphilitica f. albiflora Britt.
Great Blue Lobelia
Family - Campanulaceae
Stems - To 2.2m tall, angled, hairy on angles or not.
Leaves - Alternate, 2-6cm broad, to 15cm long, typically with pubescence on both surfaces - but not always, with some teeth on margins, sessile or on very short petioles, oblong to lanceolate.
Inflorescence - Terminal and axillary racemes, with at least 20 flowers but usually many more.
Flowers - Perianth to +/- 3cm long. Corolla white, tubular, with five lobes - two on upper portion, three below.
Flowering - August - October.
Habitat - Moist to wet soils.
Origin - Native to U.S.
Other info. - This plant
appears to grow taller than typical L. siphilitica
with blue-purple flowers. It is quite striking and I was pleased to find
it growing wild at the zoo (just this one plant), since it is uncommon in
this state. This is the only time I have seen this plant.
Photograph taken at the Kansas City Zoo, 8-13-99.