TAXONOMY 
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Gentianiacece or Gentian Family. — -Herbs often low-growing. Roots 
and short stems sometimes more or less thickened ( Gentiana lutea). 
Leaves opposite, decussate, entire, exstipulate. Inflorescence cymose 
Fig. 1 81 . — Gentiana lutea — Flowering head and dissected flower. (Sayre.) 
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{Gentiana lutea) or condensing to a single solitary terminal flower 
{Gentiana verna , G. acaulis, etc.) Flowers regular, perfect, penta- 
merous or tetramerous, sepals five to four, green, more or less synse- 
