STANDLEY- — FLORA OF GLACIER PARK. 257 



Leaves from finely toothed to lobed. 

 Flowers green, without a corolla, in catkins; fruit sometimes conelike. 



Fruit conelike; seeds not hairy BETULACEAE (p. 324). 



Fruit a small capsule; seeds each with a tuft of hairs. 



SALIC ACE AE (p. 317). 

 Flowers not green, with a corolla, never in catkins; fruit not conelike. 

 Leaves conspicuously lobed, about as broad as long. 



Petals 1.5 to 3 cm. long; fruit like a raspberry . . . Rubus (p. 364). 

 Petals less than 5 mm. long; fruit like a currant . . Ribes (p. 357). 

 Leaves toothed but never lobed. 

 Corolla of united petals; fruit juicy, with minute seeds. 



VACCINIACEAE (p. 392). 

 Corolla of distinct petals; fruit dry, or sometimes juicy, but with 

 large or rather large seeds. 

 Fruit juicy, containing a single seed . AMYGDALACEAE (p. 367). 

 Fruit dry or, if juicy, containing 2 or more seeds. 



Flowers in racetnes! fruit juicy Amelanchier (p. 366). 



Flowers not in racemes; fruit dry or juicy. 



Stamens 4 or 5; fruit dry or juicy: flowers green or white. 



RHAMNACEAE (p. 375). 

 Stamens 15 or more; fruit dry; flowers white or pink. 



ROSACEAE (p. 358). 

 II. Herbaceous Plants. 



Plants grasses or resembling grasses; corolla green or brownish or none. 

 Flowers not inclosed by husklike scales, composed of 3 sepals and 3 petals; fruit a 



capsule, containing 3 or more seeds JTJNCACEAE (p. 305). 



Flowers inclosed by husklike scales, without a proper calyx or corolla; fruit 

 1-seeded, not opening. 

 Leaves in 2 ranks on the stems; stems round or somewhat flattened, usually 

 hollow; leaf sheaths usually split; flowers with 2 bracts, one above and one 



below POACEAE (p. 280). 



Leaves in 3 ranks; stems round or usually 3-angled; leaf sheaths not split; 



flowers with only one bract, this below CYPERACEAE (p. 294). 



Plants not grasslike; leaves sometimes resembling grass leaves but the plants then 

 with colored flowers. 

 A. Leaves composed of 6 or more leaflets, or else lobed to the midrib. , 

 Plants floating on or submerged in water. 



Leaves alternate; flowers white Batrachium. (p. 341). 



Leaves opposite or whorled ; flowers green or yellow. 

 Leaves witli small bladders; corolla yellow, spurred, of united petals. 



Utricularia (p. 410). 

 Leaves without bladders; corolla of minute distinct greenish petals or none. 



Myriophyllum (p. 382). 

 Plants not growing in water. 

 Flowers sessile in dense heads, the head surrounded by bracts and often 



resembling a single flower ASTERACEAE (p. 419). 



Flowers not in a dense head surrounded by bracts. 



Leaves opposite, or else all borne at the base of the naked stem. 

 Flower-bearing stems naked, the leaves all at the base of the stem. 

 Leaflets 3, entire; corolla of united petals. 



MENYANTHACEAE (p. 395). 

 Leaflets more than 3, toothed or lobed; corolla of distinct petals. 

 Flowers solitary on the stems; fruit a capsule; leaves many. 



PAPAVERACEAE (p. 344). 



