PHLOX FAMILY 107 



2-3-celled, capsule 1-3-celled; flowers in dense terminal bracted clusters; 

 leaves alternate, spiny and pinnately cut, or the lowest entire; annual. 



1 . Corolla yellow ; leaves sticky N. Breweri ' 



2. Corolla white ; leaves not sticky 



:.. Corolla 5-6 mm. long N. intertexta 



j. Corolla 2-3 mm. long N. minima 



PHLOX Linne 1753 PHLOX 



(Gr. phlox, flame, name of a red plant) 



PI. 20, fig. 2-4. 



Sepals 5, united into a tubular or bell-shaped calyx, petals 5, blue, 

 purple, red or white, united into a salverform corolla, with narrow tube, 

 stamens 5, on the corolla tube, ovary 3-celled, style usually slender, ovules 

 1-4 in each cavity, fruit an ovoid 3-valved capsule, flowers in terminal 

 cymes or cyme-like panicles ; leaves opposite, entire or some of the upper 

 ones alternate; annual or perennial. 



1. Leaves densely to sparsely woolly; cushion 



plants 



a. Corolla tube much longer than calyx 



( 1 ) Leaves awl-shaped, prickly, sparsely woolly P. canescens 



(2) Leaves ovate, scarcely prickly, densely 



woolly P- bryoides 



b. Corolla tube about the length of the calyx P> Hoodii 



2. Leaves not woolly, but smooth, hairy, or the edge 



ciliate 



a. Leaves ciliate at the edge, sometimes glandu- 



lar also ; cushion plants 



(1) Leaves less than 1 cm. long; corolla about 



1 cm. wide P. caespitosa 



(2) Leaves 1-2 cm. long; corolla 1-2 cm. wide P.Kelseyi 



b. Leaves little or not at all ciliate, but smooth, 



hairy or glandular 



(1) Leaves 1-2 cm. long; stems tufted, some- 



what woolly, 1-4 in. high P. Dougldsii 



(2) Leaves 2-5 cm. long; stems rarely tufted, 



4-15 in. high, often glandular P. longifolia 



POLEMONIUM Linne 1753 POLEMONIUM 



(The Greek name of a plant) 



PI. 19, fig. 5-6. 



Sepals 5, united into a bell-shaped calyx, petals 5, blue, white or 



