LOBELIACEiB 



133 



1. C. Totundifdlia, L. Bluebell, Harebell. 



Slender perennial, with rounded petioled basal leaves, withering before 

 the plant reaches matlirity, and stem leaves linear or nearly so; flpwers 

 large, blue; capsule opening by pores at the base. Dry soil, common and 

 variable. 



2. C. aparinoldes, Pursh. Marsh Bellflower. 



Stem weak, more or less 3-angled, roughened on the angles; leaves 

 linear-lanceolate; flowers small, nearly white, terminating the branches. 

 Marshy grpund, leaning on graiss for support. Man. and westward. 



LXXXV. LOBELIACEiE (Lobelia Family). 



Herbs with alternate leaves, bitter milky juice and irregular 

 flowers. Calyx tube adhering to the ovary; corolla 2-lipped, with 

 a split to the base down one side, 5-Iobed ; stamens 5, free from the 

 corolla, united by their anthers and usually by their filaments; 

 style 1; stigma 2-lobed, often fringed; ovary 2-celled, many- 

 ovuled. ' 



1. LOBfeLIA. 



Calyx 5-oleft; corolla 2-lipped and split down the upper side; 

 pod 2-oell6d, many-seeded; flowers mostly in leafy or bracted 

 racemes. 



1. L. spicita. Lam. 



Stem slender, leafy, usually simple; lower leaves obovate to spatulate, 

 upper linear and bract-like; flowers light blue in terminal racemes. Moist 

 sandy soil, Man. and westward. 



D 



Fig. 78. 

 Achenes surmounted by different forms of pappus. 



E 

 Fig. 79. 



A, pappus of soft bristles, Benicio; B, pappus on the long beak of the achene, Tar- 

 axicum ; C, pappus of two awns, bidens ; 2), pappus of a number of scales, 

 helenium ; JS, pappus of a few small chaffy scales, chicorium. 



