STANDLFA' — FLORA OF GLACIER PARK. 261 



Leaves net- veined; sepals (always present) and petals (often absent) usually 4 or 5 

 each (leaves rarely appearing to be parallel-veined, but such plants never with 

 3 petals). 

 Plants without any green coloring; leaves all rediiced to scales. 



MONOTROPACEAE (p. 389). 

 Plants with green leaves. 

 C. Stems naked, the leaves all at the base of the flower-bearing stem (a whorl of 

 leaflike bracts sometimes present at the base of the flowers in Eriogonum, 

 a single small leaflike bract sometimes present on the stem in Farnassia). 

 Flowers in a dense head surrounded by an involucre of bracts; fruit an achene, 

 usually with a tuft of bristles at the top. 

 Juice milky; flowers all with strap-shaped corollas. 



CICHORIACEAE (p. 414). 

 Juice not milky; only the outer flowers of the head with strap-shaped (ray) 



corollas ASTERACEAE (p. 419). 



Flowers not in a head surrounded by bracts or, if sometimes appearing to be 

 80, the perianth of distinct sepals; fruit never an achene with a tuft of 

 bristles. 

 Leaves covered with long gland-tipped hairs; flowers in racemes. 



DROSERACEAE (p. 352). 

 Leaves without gland-tipped hairs; flowers various. 

 Flowers in dense cylindric spikes; leaves with 3 or more ribs. 



PLANTAGINACEAE (p. 411). 

 Flowers not in spikes; leaves not ribbed. 

 Corolla of united petals. 

 Flower one on each stem. 



Corolla spurred, purple; leaves sessile Pmgiiicula(p. 410). 



Corolla not spurred, white; leaves slender-petioled, 



LimoseUa (p. 406). 

 Flowers more than one on each stem. 

 Flowers in umbels; leaves longer than broad. 



PRIMULACEAE (p. 393). 

 Flowei-s not in umbels; leaves as broad as long. 



Romanzoffia (p. 398). 

 Corolla of distinct petals, or the flower without petals but with distinct 

 colored sepals. 

 Petals none, the flowers with 6 sepals; flowers in clusters surrounded 



by an involucre of united bracts Eriogonum (p. 32*6) . 



Petals present; sepals 4, 5, 8, or 10; flowers not in a cluster surrounded 

 by an involucre. 

 Petals and sepals 8 or 10 each; leaves wMte-woolly beneath. 



Dryas (p. 362) . 

 Petals and sepals 4 or 5 each; leaves not white-woolly beneath. 

 Petals and sepals each 4, inserted at tlie top of the ovary and fruit. 



ONAGRACEAE (p. 378). 

 Petals and sepals each 5, not inserted at the top of the ovary and 

 fruit. 

 Fruit of numerous achenes; petals yellow. 



RANTJNCULACEAE (p. 338). 

 Fruit a capsule; petals variously colored. 

 Petals yellow or violet, one of them spiured at the base. 



VIOLACEAE (p. 377) 

 Petals white, greenish, or pink, none of them spurred. 



