PHLOX FAMILY 105 



v. Corolla pale blue or purplish, 4-6 mm. 



long G. pinnatifida 



(b) Stamens included 

 x. Corolla 4-5 mm. long; seeds unchanged 



when wet G. leptomerin 



y. Corolla 5-10 mm. long ; seeds with 



spirals when wet G. inconspicua 



b. Leaves regularly opposite 



( 1 ) Stamens hairy G. pharnaceoides 



[2) Stamens smooth G. Harknessii 



2. Flowers in a dense spike or head 



a. Flowers in an oblong spike 2-8 in. long; leaves 



linear, mostly entire G. spicdta 



b. Flowers in a roundish head 



1 ! Stems naked, except for the 2 persistent 

 seed leaves, 1-4 in. high; head with an 

 involucre of 4-5 leaves G. nudicaiilis 



(2) Stems leafy; heads not involucrate 



(a) Corolla tube equalling calyx lobes; heads 



dense G. congest a 



(b) Corolla tube twice as long as calyx; 



heads loose G. piimila 



3. Flowers solitary, or in open corymbs 

 a. Flowers 1-2 cm. long 



(1) Leaves needle-pointed 



fa) Leaves alternate, at least above; flowers 



solitary G. pungens 



(b) Leaves opposite G. Wdtsoni 



(2) Leaves not needle-pointed; flowers in 



corymbs G. Nuttdllii 



h. Flowers 2-4 mm. long 



(1) Corolla twice as long as the calyx G.tenerrima 



(2) Corolla little longer than the calyx 



(a) Stamens equally exserted G. minutiflora 



(b) Stamens unequally exserted G. micrdntha 



Navarretia Ruiz and Pavon 1794 



f Warned for Navarrete. a Spanish botanist") 



Sepals 5. united into a prism-shaped or pyramid-shaped calyx, spiny- 



::pped. petals 5. white or yellow, united into a tubular funnel form or sal- 



[verform corolla, stamens 5 on or below the throat of the corolla, ovary 



