ORDER XLVir. LYTIIIiACE^. 300 



1. R. Maria'na, (L.) Stem hirsute, terete, furrowerl. Leaves^ lanceo- 

 late, attenuate at the base, hisj)id, serrate, ciliate. Flowers axillary or 

 terminal. Cahjx hispid. Petals large, obliquely obovate, often hispid. 

 Anthers long, linear, opening at the summit. Style longer thau the sta- 

 mens. — Purple. If. June — Sept. In moist soils. 1 — 2 feet. 



2. R. angustifo'lia, (Xutt.) Stem hirsute, nearly terete, much 

 branched. Leaves linear or lanceolate, somewhat clustered, attenuate 

 at the base, slightly hispid, setaceously ciliate, serrulate. Flowers nu- 

 merous, smaller than the preceding. Calyx glabrous. — Pale purple or 

 nearly white. 2^. Damp soils. 1 — 2 feet. R. lanceolata, Walt. 



3. R. Virgin'ica, (L.) Stem square, with the angles winged, hispid, 

 brandling. Leaves sessile, oval, lanceolate, acute, hispid above and on 

 the ribs beneath, sometimes 5 — 7-ribbed. Flowers numerous, axillary, 

 and terminal. Calyx hispid. Petals obovate, hispid externally. — Pur- 

 ple. 2^. July — Sept. In swamps. 2 — 3 feet. Deer Grass, 



4. R. stric'ta, (Pursh.) Stem glabrous, square ; angles winged, beard- 

 ed at the nodes. Leaves sessile, ovate, lanceolate, acuminate, setace- 

 ously serrulate, often hispid above. Flowers in diehotomous corymbs. 

 Ca/_j/x glabrous. — Purple. 1(, In wet pine-barrens. Aug. — Sept. 3 

 —4 feet. 



5. R. glabel'la, (Mich.) Stem glabrous, slightly furrowed, terete, 

 simple. Leaves lanceolate, entire, or with few serratures at the sum- 

 mit. Flowers large. Calyx with glandular hairs. Petals large, gland- 

 ular externally before their expansion. — Purple. If. June — Aug. 

 Damp woods. 2 — 5 feet. Deer Grass. 



6. R. cilio'sa, (Mich.) Stem simple, quadrangular, glabrous. Leaves 

 slightly petioled, ovate, lanceolate, serrulate, ciliate, hispid above. 

 Flowers in a loose diehotomous panicle, with an involucre formed by the 

 upper pair of leaves. Calyx glabrous. Petals nearly round. — Purple. 

 If. June — Aug. Pine-barrens. 1 — 2 feet. 



7. R. serrula'ta, (Xutt.) Ste7n small, simple, quadrangular, glabrous. 

 Leaves small, ovate, or oval, glabrous, serrulate, and ciliate. Flowers 1 

 — 3, together. Calyx glandular, hispid. — Purple. If. June — Jul}'. 

 Swamps. 6 — 10 inches. 



8. R. lu'tea, (Walt.) ^S/^m hirsute, square, branching, hispid. Leaves 

 linear, lanceolate, sometimes cuneate, entire. Flowers small. Calyx 

 smooth and shining, or with a few scattered bristles. Petals setace- 

 ously mucronate. — Yellow. U- Damp pine -barrens. June — Aug. 

 12—18 inches.' 



Order XLVIL— LYTHRA'CE^. 



Cabjx 4-Iobed. Petals none or four. Sta77ieus inserted 

 into the tube of the calyx, generally in number equal to the 

 lobes. Anthers short, introrse. Ovary 2 — 4-celled, inclosed in 

 the calyx ; ovules numerous ; placent:ii central. Capsule niem- 

 branaceous, sometimes 1 -celled. Seeds numerous, anatropous. 

 Cotyledons foliaceous. Herbs, with opposite leaves, witliout 

 stipules. 



ANALYSIS. 



1. Calyx with accessory teeth between the lobes ., .• • • . ^ 



Caly.x with no uccossory tooth Ifypobrichia, 1 



