Fig. 629: a-d, Swertia perennis: a, habit, x ^4; b, flower, x 2; c, petal, x 3; d, gland, 

 X 3. e and f, Lomatogoiiium lotatiim: e, flower, about x 2; f, enlargement of 2 petals 

 and stamen, (e and f adapted from Hitchcock, et al.. Vascular Plants of the Pacific 

 Northwest; V. F.). 



