Ageratum houstonianum Mill.

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ASTERACEAE

Aqeratum houstoni anum Mill.

det. John Pruski (MO), 2007
Missouri: Saint Louis City
Cultivated at the Missouri Botanical
Garden, St. Louis.

38*36'44"N 090*15'33"W	650 f

Phyllaries bicostate, to 0.7 mm wide,
heterotrichous with uniseriate
trichomes ca. 0.8 mm long (typically
longer than phyllaries are wide) and
biseriate staggered-celled small-
capped stipitate-glands ca. 0.2 mm
long; style branches and corolla tips
lavender; pappus scales and corolla
bases greenish.

31 August 2007

John Pruski 4307

MISSOURI BOTANICAL GARDEN HERBARIUM (MO!

01867065