DROSERA. CERATOPHYLLACEZ. 215 
CERATOPHYLLUM. 
and alternate with them, rarely 2 or 3 times as many, marces- 
cent; anthers extrorse or innate, the cells distinct or somewhat 
connivent above, opening down the sides or rarely by a termi- 
nal pore. Ovary composed of 2-5 united carpels: placenta 
parietal or filling the base of the cell. Styles 2—5, distinct or 
united at base, each 2-parted, or multifid and pencil-shaped, 
sometimes all united into.one. Capsule loculicidally 2—5-valved 
or indehiscent mostly many-seeded. Seeds anatropous; the 
testa sometimes arilliform. Embryo short, at the base of car- 
tilaginous or fleshy albumen. | 
1 DROSERA L. Gen. n..391 (SUNDEW). 
Small herbs growing in sphagnous or sandy marshes, with the 
leaves all radical and furnished with numerous long glandular 
hairs, and small flowers on simple scapes. Stamens 5, styles 
3-5, 2-parted with the divisions somewhat thickened toward the 
apex, or multifid. Capsule subglobose or ovoid, usually 3-valved 
at the top; the valves placentiferous to the top. Seeds numer- 
ous, in 2-5 rows on each placenta. 
D. rotundifolia L. Sp. i, 281. Leaves spreading, orbicular, ab-' 
ruptly attenuate toa long hairy petiole: scapes 2-6 inches high, 5-10-flow- 
ered: petals oblong, 2 lines long, « little exceeding the oblong sepals: styles 
short, 2-parted: capsule included in the calyx: seeds linear with a loose 
coat. in cold marshes Alaska to California, the Atlantic States and 
Europe. ‘ 
D. Anglica Hudson FI. Angl. 135. Leaves ascending, oblong, attenuate 
into the slender naked petioles: scapes 3-10 inches high, sometimes forked 
at the top, few-flowered: petals linear-oblanceolate 3-4 lines long nearly 
twice longer than the oblong sepals: capsule exceeding the calyx: seeds 
linear with a loose coat. In cold marshes Alaska to California, Siberia and 
northern Europe. 
OrpER XXXV. CERATOPHYLLACEA. Gray, Ann. Lyc. 
sa ales la ae: BD 
Perennial submerged aquatic herbs with cylindrical jointed 
stems and branches, verticillate, sessile, filliformly 2-3-choto- 
mous leaves without stipules, and sessile axillary-flowers. 
Flowers monecious without perianth but surrounded by a 
persisten: 8-12-cleft involucre; anthers numerous sessile, fleshy, 
2-3-cuspidate at top, ovary solitary, l-celled, with a pendulous 
orthotropous ovule; achene beaked by the slender persistent 
style,seeds with membranous transparent testa and no albumen; 
radicle inferior very short; the cotyledons thick and oval, the 
highly developed plumule consisting of several nodes and 
leaves. 
1 CERATOPHYLLUM L. Geertn. Fr. t. 44. 
Characters as of the order. | 
C. demersum L. Sp. 1409. Stems very slender, a foot or two long, 
