86 CARYOPHYLLACEAE 



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

 rowly linear-oblanceolate: calvx 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. multicaulis. 

 Calyx scarcely inflated in fruit, narrowed downward ; 



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

 Plants many-flowered, more or less verticillately racemose or 

 spicate, witla erect branches; lower bracts longer than 

 the calyx. 

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



11. S. Scouleri. 

 Claw and auricles of the petals broad; the latter cUiate. 



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-pulvinate. 14. S. acaulis. 



Calyx 1.5-20-nerved, strongly inflated in fruit and more or less constricted at the 

 naouth. 15. S. vulgaris. 



3. WAHLBERGELLA Fries. 



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



Petals included. 1. W. Drummondii . 



Petals exserted. 



Ovarj sessile; blades of the petals emarginate. 2. W. striata. 



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



Low, about 1 dm. liigh; 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. affinis. 

 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. rnontana. 



Flowers in anthesis nodding; fruiting calyx much inflated. 



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. H'. apetala. 



i. SAPONARIA L. Soapwort, Bouncing Bet. i. S. officinalis. 



5. VACCARIA Medic. Cow-herb, Cow Cockle. l. V. Vaccaria. 



Family 46. CERATOPHYLLACEAE. Hornwort Family. 

 1. CERATOPHYLLUM L. Horxwort. l. C. demersum. 



Family 47. NYMPHAEACEAE. Water Lily Family. 



Petals small, stminaodia-like; stamens hypogynous. 1. Nymph.\.ea. 



Petals at least as large as th sepals; staemens epigynous. 2. C.\st.\.lia. 



1. NYMPHAEA (Tourn.) L. Yellow Pond Lily, Sp.\tter-dock. 



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

 oblanceolate. truncate; stigma IO-25-raycd. 



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



Sepals usually 6; flowers 4-7 cm. in diameter; stamens yellow. 2. iV. variegala. 



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. A", nncrophylla. 



2. CASTALIA Salisb. Water Lily. Pond Lily. l. C. Leibergii. 



Family 48. RANUNCULACEAE. Crowfoot Family. 



Carpels l-ovniled; fruit of achenes. 



Petals wanting; sepals often petal-like. 



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

 inflorescence opposite. 

 Flowers subtended by opposite or verticillate leaf-like bracts. 



Styles short, not elongating m fruit. 1. ANEMONE. 



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



Flowers not subtended by opposite or verticillate bracts. 



Leaves ternately compound. 3. Thalictrum. 



