ONAGRACEAX. (EVENING PRIMROSE FAMILY.) 143 
6. CIRCZEA, Tourn. 
Calyx-tube slightly produced beyond the ovary, the limb 2-cleft, deciduous. 
Petals 2, obcordate. Stamens 2. Style filiform. Capsule obovate, 1 - 2-celled, 
1 - 2-seeded, bristly with hooked hairs. — Perennial herbs, with opposite petioled . 
leaves, and small white or rose-colored flowers in loose terminal racemes. 
1. C. Lutetiana, L. Minutely pubescent ; leaves ovate, acuminate, slight- 
ly toothed, usually longer than the petioles; bracts none; capsule hispid. — 
Damp shades along the mountains, Georgia and northward. July. — Stem 
19-2? high, tumid at the joints. Fruit reflexed. Flowers reddish-white. 
2. C. alpina, L.. Smooth ; stem low (3'—$8'); leaves cordate, coarsely 
toothed, as long as the petioles ; pedicels minutely bracted; capsule hairy. — 
With the preceding. 
7. PROSERPINACA, L. 
Calyx-tube 3-sided, 3-lobed. Petals none. Stamens 3. Stigmas 3. Fruit 
bony, 3-angled, 3-celled, 3-seeded. — Herbs with pinnately dissected leaves, and 
minute axillary greenish flowers. 
` 
1. P. palustris, L. Leaves lanceolate, sharply serrate, the submerged 
ones pectinate, — Ponds and ditches, Florida to Mississippi, and noriai, 
June- August. — Stem 19 - 11? long, ascending or floating. 
2. P. pectinacea, Lam. Leaves all pectinate, the divisions filiform ; 
fruit rugose. — With the preceding. — Stem 3! - 12! long. 
8. MYRIOPHYLLUM, Vail. Warrz-Mirroirr. 
Flowers moncecious or polygamous. Calyx 4-parted in the sterile flowers, 4- 
toothed in the fertile ones. Petals 4 or none. Stamens 40r8. Stigmas 4, 
recurved. Fruit bony, 4-celled, 4-lobed, indehiscent. — Aquatic perennial herbs, 
with the submerged leaves pinnately divided into filiform or capillary segments, 
and commonly whorled. Flowers minute in the axils of the upper leaves; the 
Uppermost sterile, 
* Stamens 8: fruit even or warty. 
1. M. laxum, Shuttl Stem long, slender; leaves 4 in a whorl ; the floral 3 
ones reduced to minute nearly entire spatulate bats shorter than the flowers, 
Which thus form an interrupted almost naked spike; fruit roughened with mi- 
anter with the lobes obtuse. — Ponds and lakes, Middle and West Florida. 
Prek 
2. M. verticillatum, L. Leaves in whorls of 3-4, the floral ones lines 
Pectinately toothed, much longer than the flowers; fruit smooth. — Still water, — 7 
and northward. July. — Stem 2°- ftdenac tidie ton te lah 
x * * Stamens 4: fruit ridged'and roughened. © 
e a M. heterophyllum, Michx. Stem thick; leaves 4-6 ins 
! lenses ens ocellis un sharply : 
Pe 
