86 CARYOPHYLLACEAE 



Plant very viscid ; leaves thick, the basal ones nar- 

 rowly linear-oblanceolate; calyx less inflated. 



8. S. Lyallii. 

 Plant usually viscid only above; leaves thin, the 



«__ basal ones oblanceolate or spatulate; calyx 

 much inflated and rounded below. 



9. S. multicauHs. 

 Calyx scarcely inflated in fruit, narrowed downward; 



veins green; plant not viscid. 10. S. Douglasii. 

 Plants many-flowered, more or less verticUlately racemose or 

 spicate, with erect branches; lower bracts longer than 

 the calyx. 

 Claw and auricles of the petals narrow; the latter laciniate. 



11. S. Scouleri. 

 Claw and avu'icles of the petals broad; the latter ciliate. 



12. S. Hallii. 

 Inflorescence leafy ; flowers borne In the axils of the branches, less than 1 cm. 



long. 13. S. Menziesii. 



Plant subacaulescent, densely cespitose-pulvlnate. 14. S. acaulis. 



Calyx 15-20-nerved, strongly inflated in fruit and more or less constricted at the 

 mouth. 15. S. vulgaris. 



3. WAHLBERGELLA Fries. 



Tall, usually 3 dm. high or more, several to many-flowered, in narrow cymes. 



Petals included. 1. W. Drummondil. 



Petals exserted. 



Ovary sessile: blades of the petals emareinate. . 2. W. striata. 



Ovary stipitate; blades of the petals 2-cleft. 3. W. Parryi. 



Low, about 1 dm. high; flowers solitary, or 2 or 3; seeds winged. 

 Flowers in anthesis erect; fruiting calyx not much inflated. 



Petals usually exserted; claw broad; blade short and broad, emarginate. 

 Claws of the petals and the filaments naked; plant glandular-villous. 



4. W. afflnis. 

 Claws of the petals and the filaments ciliate; plant puberulent. 



5. W. Kingii. 

 Petals usually included; claws and blades narrow; the latter bifid; filaments 



glabrous. 6. W. montana. 



Flowers in anthesis nodding; fruiting calyx much Infiated. 



Petals slightly exserted; calyx-lobes broadly lanceolate; five of the stamens adnate 



to the petals for one-third their length. 7. W. attenuata. 



Petals included; calyx-lobes short, rounded-ovate; five of the stamens only slightly 



adnate to the petals at the base. 8. W. apetala. 



4. SAPONARIA L. Soapwort, Bouncing Bet. l. S. officinalis. 

 6. VACCARIA Medic. Cow-herb, Cow Cockle. l. v. Vaccaria. 



Family 46. CERATOPHYLLACEAE. Hobnwort Family. 

 1. CERATOPHYLLUM L. Hornwokt. l. C. demersum. 



Family 47. NYMPHAEACEAE. Water Lilt Family. 



Petals small, stminaodia-like; stamens hypogynous. 1. Ntmphaea. 



Petals at least as large as th sepals; staemens epigynous. 2. Castalia. 



1. NYMPHAEA (Tourn.) L. Yellow Pond Lily, Spatter-dock. 



Leaves 1-3 dm. long, the sinus extending about one-third their length; petals cuneate to 

 oblanceolate, truncate; stigma 10-25-rayed. 



Sepals 9-12; flowers 6-10 cm. in diameter; stamens red. 1. N. polysepala. 



Sepals usually 6; flowers 4-7 cm. in diameter; stamens yellow. 2. N. variegata. 

 Leaves 5-10 cm. long, the sinus extending fully one-half their length; petals spatulate, 



thin; stigma 7-10-rayed; flowers about 2.5 cm. in diameter. 3. N. microphylla. 



2. CASTALIA Salisb. Water Lilt, Pond Lily. l. C. Leiiergii. 



Family 48. RANUNCULACEAE. Crowfoot Family. 



Carpels 1-ovuled; fruit of achenes. 



Petals wanting; sepals often petal-like. 



Sepals imbricate in the bud; leaves all alternate, or only those subtending the 

 Infiorescence opposite. 

 Flowers subtended by opposite or verticillate leaf-Uke bracts. 



Styles short, not elongating in fruit. 1. Anemone. 



Styles much elongating in fruit, plumose. 2. Pulsatilla. 



Flowers not subtended by opposite or verticillate bracts. 



Leaves teruately compound. 3. Thalictrum. 



