224 LOBELIACE^. (LOBELIA FAMILY.) 



base not auriculate-clasping : Jioicers blight blue or violet-purple: akenes lanceolate 

 oblong, barely 2 lines long, striate-nervose ; the tip of short [no longer than the 

 breadth of the bod}]) beak soft and usualhj whitish. — Mulgedium pulchellum, 

 Nutt. From New Mexico to California, British Columbia, and eastward. 

 * * Akenes thickish, oblong, with some strong ribs and nerves, contracted at the 



summit into a short but manifest neck. 

 3, L. leueophsea, Gray. Stem 3 to 12 feet high, stout, leafy up to the 

 pyramidal rather crowded panicle : leaves ample, sinuately or runcinately 

 pinnatifid, coarsely and irregularly or doubly dentate ; upper cauliue sessile 

 by a mostly narrowed but auriculate or partly clasping base : involucre oblong, 

 5 lines high : flowers bluish to yellowish or whitish : pappus sordid or fus- 

 cous. — Mulgedium leucophoeum, DC. Across the continent from Oregon to the 

 mountains of Carolina and northward. 



Order 43. LOBELIACEiE. (Lobelia Family.) 



Herbs with milky juice, alternate leaves, scattered flowers, irregular 

 5-lobed corolla, and the 5 stamens free from the corolla and united 

 into a tube commonly by their filaments and always by their an- 

 thers. Calyx-tube adherent to the 2-celled, many-seeded capsule: 

 style one. 



1. liObelia. Corolla open down to the base on one side. 



2. Liaurentia* Corolla with a closed tube. Capsule wholly inferior. 



1. LOBELIA, L. 



Calyx-tube 5-cleft, with a short tube. Corolla with a straight tube and 

 somewhat 2-lipped ; the upper lip of 2 rather erect lobes, the lower lip spread- 

 ing and 3-cleft. Capsule 2-celled, opening at the top. — Flowers axillary or 

 chiefly in bracted racemes. 



1. L. cardinalis, L. Stem tall, simple, 2 to 4 feet high, smoothish. 

 leaves oblong-lanceolate, slightly toothed : raceme elongated, 7-ather one-sided ■ 

 flowers large, deep red ; the pedicels much shorter than the leaf-like bracts. — 

 Colorado, and throughout the States eastward. The intense red of the flower 

 varies to rose-color and even white. Known as "Cardinal Flower." 



2. L. syphilitica, L. Stems simple, 2 to 3 feet high, leafy to the top, 

 somewhat hairy : leaves thin, oblong or ovate-lanceolate, acute at both ends, 

 irregularly serrate : flowers in a long spike-like raceme, light blue, rarehj ivhite : 

 sinuses of the calyx with de flexed auricles. — From Colorado to the Dakotas 

 and throughout the States eastward. 



2. LAURENTIA, Micheli. 



Calyx-tube turbinate or oblong. Corolla with its tube as long as the limb, 

 which is like that of Lobelia.- Capsule short, 2-valved at the summit. — Low 

 herbs, resembling small species of Lobelia, excepting the closed tube of the 

 coroDa. Flowers blue. 



