394 
82. HYDROCHARIDACE.K. 
Older LXXXII. HYDROCH ARIDACE.E. 
Sep. 3, herbaceous. Pet. 3, regular, coloured. Stam. epigy- 
nous. Ovary solitary, inferior ; placentes parietal soraetimes 
projecting in:o the centre of the ovary. Stig. 3 — 6. Fr. dry, or 
succulent, not bursting, 1- or spuriously many-celled. Seeds 
many. Albumen 0. Embryo straight, cylindrical. — Noraphides. 
1. Hydeocharis. Dioecious. Cal. 3-parted. Pet.3. Male 
with 9 — 12 stamens in 3 rows surrounding 3 abortive styles. 
— Fem. with 3 abortive filaments and 3 fleshy scales sur- 
rounding the 6 deeply bifid styles. Caps. 6-celled, many- 
seeded. — -L. floating, orbicular. 
2. Steatiotes. Dioecious. Cal. 3-parted. Pet. 3. Male 
with 12 or more stamens surrounded by many abortive ones. 
Fem. with 6 deeply bifid styles. Berry 6-celled, many- 
seeded. — L. swordshaped. 
3. Helodea. Dioecious. Fl. from tubular bifid spath. 
Cal. 3-parted. Pet. 3. " Male. Sep. ovate-oblong. Pet. 
linear or none. Stam. 9 : filaments combined into a column 
below.'' — Fem. with a long filiform tube, 3 abortive fila- 
ments and ligulate stigmas. Caps. 1 -celled, few-seeded. — 
L. oval-oblong, in whorls. 
1. Hydeoch aris TAnn. Frog-bit. 
1. //. Morsm-rdnce {L.).—E. B. 808. R. vii. 62.— Floating. 
With runners bearing tufts'of stalked roundish-reniform entire 
leaves. Fl. white, delicate, springing from a pellucid membra- 
nous sheath. Seeds covered with beautiful prominent spirally 
twisted cells.— Ponds and ditches. P. VII. VIII. E. I. 
2. Steatio'xes Linn. Water-Soldier. 
1. -S'. Aldides (L.) ; 1. swordshaped-criangular ciliate-spinous. 
— B. 379. R. vii. 61. — Creeping in the mud. L. many, 
rigid. Stalk compressed, 5 or 6 in. high, with two 1. near its 
summit. Fl. white, delicate The plant rises to the surface of 
the water to flowar, and sinks again afterwards. — Fen-ditches 
in the P^ast of England ; naturalized in Scotland and Ireland. 
P. VII. E. [S. I.] 
3. Helodka Rich, ex Michx. cm., Cas]>. Water-Thyme. 
*1. //. canadeii'sis (lUch. ex Michx. em., Casp.) : 1. 3 in a 
whorl oval-oblong blunt serrulate, fem. fl. from a tubular biiid 
spath many times exceeding the sessile germen, sep. and pet. 
