STANDLEY — FLORA OF GLACIER PARK. 263 



Petals present. 

 Petals unlike, one of them with a spur at the base. 



VIOLACEAE (p. 377). 

 Petals all alike or nearly so, none of them spurred. 



Sepals 2; leaves fleshy PORTULACACEAE(p.332). 



Sepals 4 or more or none; leaves fleshy or thin. 



Petals blue; leaves entire LINACEAE (p. 374). 



Petals not blue; leaves entire, toothed, or lobed. 

 Leaves thick and fleshy, glabrous; fruit of 4 or 5 small pods. 



CRASSULACEAE (p. 352). 

 Leaves thin, not fleshy, often hairj^; fruit various. 

 Sepals and petals each 4. 



Sepals inserted at the top of the ovary and fruit. 



ONAGRACEAE (p. 378). 

 Sepals inserted at the base of the ovary and fruit. 



BRASSICACEAE (p. 344). 

 Sepals and petals each 5 or more. 



Flowers in umbels; leaves entire or toothed. 



APIACEAE (p. 383). 

 Flowers not in umbels; leaves various. 

 Sepals inserted on the top of the fruit. 



LOASACEAE (p. -378). 

 Sepals inserted at the base or at the side of the fruit. 

 Sepals distinct. Fruit of numerous achenes or of several. 



pods RANUNCULACEAE (p. 338). 



Sepals united at the base. 

 Fruit composed of numerous sections shaped like those 

 of an orange, covered with long stiff hairs; petals 

 2 to 2.5 cm. long; stamens united into a column. 

 MALVACEAE (p. 376). 

 Fruit of 2 to 4 small, distinct or united pods, not long- 

 hairy; petals 1 cm. long or less; stamens distinct. 

 SAXIFRAGACEAE (p. 353). 



ANNOTATED CATALOGUE OF SPECIES. 



1. OPHIOGLOSSACEAE. Adder's-tongue Family. 



1. BOTRYCHIUM Swartz. 



Plants with erect rootstocks and 1 or sometimes 2 leaves; roots fleshy; leaves not 

 coiled in bud, composed of a sterile blade and one or more stalked spore-bearing 

 panicles; sporangia (spore cases) capsule-like, opening by 2 valves. 



SterUe blade once pinnate, the segments fan -shaped, entire or lobed . 1. B. lunaria. 

 Sterile blade 3 to 5 times divided, the segments lanceolate to ovate, toothed or lobed. 



Sterile blade sessile, thin 2. B. virginianum europaeum. 



Sterile blade stalked, very fleshy 3. B. silaifolium. 



1. Botrychium lunaria (L.) Swartz. Moonwort. Rare; a few isolated plants 

 found on grassy slopes, on mossy banks, and in bogs about Lake McDermott and 

 Sun Camp; plentiful on the moraine at Grinnell Glacier. Alaska to Calif., Colo., 

 N. Y., and Greenl.; also in the Old World. — Plants 5 to 15 cm. high; sterile blade 

 sessile or nearly so, with 5 to 15 divisions, these thick and somewhat fleshy, the veins 

 all radiating from the base and repeatedly forking. 



The plants are probably of rather frequent occurrence, but they are so small and 

 80 hidden by grasses and other plants that it is difficult to find them. 



