HALORAGE.E. (WATER-MILFOIL FAMILY.) 159 



1. N. vertieillata, HBK. Shrubby; stems pubescent, recurved ; leaves 

 opposite and whorled, lanceolate, tomeutose beneath ; peduncles short, 3- or 

 several-flowered; petals 5, showy; stamens 10, the alternate ones shorter. — 

 Marshes and margins of ponds. August. — Stems 3° -4° long. Flowers 

 purple. 



5. CUPHEA, Jacq. 



Calyx tubular, 12-ribbed, gibbous or spurred at the base on the upper side, 

 6-toothed, and usually with as many little appendages in the sinuses. Petals 6, 

 unequal. Stamens 11-12, unequal. Ovary with a gland at tlie base next the 

 spur of the calyx. Style filiform. Stigma 2-lobed. Capsule 1 -2-celled, few- 

 seeded. — Chiefly herbs, with branching stems and purplish flowers. 



1. C. viscosissima, Jacq. Annual, clammy-pubescent; leaves thin, 

 opposite, ovate-lanceolate, long-petioled, rough ; flowers nearl}^ sessile, borne 

 between the petioles, solitary ; petals violet-purple; stamens 12. — Uj)per dis- 

 tricts. August. — Stem 1° high. 



2. C. aspera, Chapm. Perennial; muricate-liispid and clammy ; leaves 

 3-4 in a whorl, lanceolate, nearly sessile; peduncles longer than the leaves, 

 borne between the petioles (whorled) ; petals wliite or pale purple ; stamens 

 n. — Low pine barrens. West Florida. — Stem 1°- 1|° high. Leaves 1' long, 

 rigid. Root bearing small tubers. 



The Crape Myrtle (Lagerstrcemia Indica, L.), originally from East- 

 ern Asia, is common in cultivation. 



Order 59. HALORAGEyE. OYater-Milfoil Family.) 



Aquatic herbs, with finely dis.sected leaves, and small sessile flowers, 

 axillary or in bracted spikes. — Calyx tube adherent to the 1 - 4-celled 

 ovary. Petals (when present) and stamens inserted on the throat of 

 the calyx. Cells of the ovary with a single su.spended ovule. Stig- 

 mas 1-4, sessile. Fruit indehiscent. Embryo in the axis of fleshy 

 albumen. 



1. 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. June -August. — Stem 1°-H° long, 

 ascending or floating. 



2. P, pectinacea, Lam Leaves all pectinate, the divisions filiform; 

 fruit rugose. — With the preceding. — Stem 3'- 12' long. 



2. MYRIOPHYLLUM, Vail. Water-Milfoil. 



Flowers monoecious or polygamous. Calyx 4-parted in the sterile flowers, 

 4-toothed in the fertile ones. Petals 4 or none. Stamens 4 or 8. Stigmas 4, 



