30 SABRACENIACE^. castalia. 



CHKYS AMPHORA. 



K. advena Ait. Hort. Kew. ii. 2-i6;Nupharadvena,Ait.f. Leaves 

 floating or emerged and erect, on stout and half cylindrical petioles, deeply 

 cordate 6-8 inches in diameter : flowers two inches in diameter : sepals usu- 

 ally 6, unequal: petals narrowly oblong, thick and fleshy, truncate shorter 

 than the stamens: anthers longer than, the filaments: stigmal2-34~rayed, 

 the margin entire or repand: fruit strongly furrowed, ovoid-oblong . (In 

 Bubalpine ponds about Mount Hood), Oregon to Alaska thence eastward 

 across the continent'.. .- 



S. polysepala Greene Bull Torr . Club, XV, 84.- Nuphar polysepdhm 

 I'.ngelm. trans. Acad. St. Louis, ii, S8S ■ Resembling the last but larger.: 

 leaves all floating, 8-14 inches in diameter: flowers fragrant, 2-5 inches in 

 diameter: sepals 8-12. unequal: petals 11-18. dilated and unlike the stam- 

 ens, yellow: fruit globose, 1-2 inches long. In ponds, British Columbia to 

 California. 



CASTALIA Salisb. Parad. Lond. 14. 



Perennial acaulesccnt herbs with thick creeping or tuberous • 

 rootstocks, rounded cordate leaves and snow white or pink 

 flowers blooming all summer. Sepals 4. plain, hypogynous, her^ 

 baceous on the oater and somewhat colored on the inner face. 

 Petals plain, those of the outermost row often greenish otitside; 

 all oblong or lanceolate, imbricated over and their bases ad- 

 nata to the surface of the 7-35 -celled ovary: innermost reduced 

 to staminodes or imperfect stamens v»ith petaloid filaments. 

 True stamens with narrow filaments and linear-oblong anthers, 

 inserted around the broad summit of the ovaiv. Ovary con- 

 cave and umbonate, lineate with as many radiate stigmatic 

 lines as there are carpels, the tips of the latter produced into 

 as many incurved short processes. Surface of the spongy-bac- 

 cate fruit bearing the basis of the decaying stamens or their .■ 

 scars. Seeds enclosed in cellular-membranaceous arillus. 



C. lelbergi Morong Bot. Gaz. xiii, 124 t. 7. Leaves oval with rather 

 open binus and acutish lobes, entire \K-Q inches, long, .two-thirds as broad: 

 flowers white l>2-2' inches in diameter when fully expanded: sepals an inch 

 long, narrow, obtuse: petals in two rows, a little shorter and moreobtu.se 

 thsu) the sepals: stamens in 8-4 rows running up the ovary more than half 

 Wity: stigmatic rays 7 or 8, the projecting points very short and blunt. In 

 "smali ponds, northern Idaho. 



OrderIV. SARRACENIACEiE Endl. Gen. 901. 

 Bog plants with pitcher-shaped or tubular and hooded 

 leaves, and perfect, polyandrous hypogynous flowers. The 

 persistent sepals, petals and cells of the "ovary each 5. Fruit 

 a. many-seeded capsule'. Embryo small, in fleshy albumen. 

 CHRYSAMPHORA Greene Pitt, ii, 191. 

 DARLINGTOiVIA Torr. Smith, contrih. vi, 4. t. IS. 

 Calyx without b]:acts, of 5 imbricated narrowly oblong sepals. 

 Petals 5, ovate oblong with a sniall ovate tip. Stamens 12-l£i iq. 

 a single row. Filaments subulate. Anthers oblong of 2 unequal 

 cells. Ovary top-shaped, with a broad concave dilated sum- 

 mit, longer than the stamens, 5-celled, the cells opposite the pet^, 



