132 MIXASTOMACK.E. (mKLASTO.MA FAMILY.) 



cohering witli the ovary below, or with its angles. Petals 4 - C, twisted in 

 the bud, inserted with the 4-12 stamens on the throat of the calyx. An- 

 thers adnate, often ajtpendaged, usually ojjening by terminal ])<)res. Ovary 

 3 - G-celled. Ovules numerous, attached to the central ])laci'nta;. Style 

 solitary. Fruit baccate and indehiscent, or capsular and loculicidally de- 

 hiscent. Seeds anatropous, -without albumen. 



1. RHEXIA, L. Deer-Grass. 



Calyx-tube prolong:cd and narrowed above the ovary, 4-rlcft. Petals 4, roond- 

 isli, dcci(hioii.s. Stamens 8. Antlicrs 1 -celled, opcniiij,' by a terminal jjore. 

 Capsule 4-cclled, many-seeded. — Perennial herbs. Leaves 3-5-ribbcd. Flow- 

 ers cyniose, terminal. 



* Antlicrs long, linear, curving upvoard, saccate at the hase^ and commonlg furnished 

 with a bristle-like appendage at tlie insertion of the Jilamtnts : flowers purple or 

 whitish. 



1. R. Mariana, L. Bristly; stem branched, terete or C-angled ; leaves 

 lanceolate, acute, sliort-pctiolcd, bristly serrate ; calyx mostly smooih, cylindri- 

 cal in flower, tlie neck in fruit as long as the globose capsular jionioii ; flowers 

 purolc. — Varies with narrower, often linear leaves, and smaller wliiti?li flowers. 

 (R. lanecolata, Walt) — Swamps, Florida to Mississippi, and nortliward. July 

 -Sept. — Stem l°-20 high. Leaves 3-ribbed. Flowers U'-2' wide, hairy 

 externally. 



2. R. Virginica, L. Bristly; stem 4-angled, nearly sini])lc ; leaves ovate 

 and ovate-lanceolate, barely acute, sessile, bristly serrate, the lowest rounded ; 

 neck of the bristly fruiting calyx sliortcr tlian the capsular portion ; the lobes 

 ovate, acuminate. — Swamps, chiefly in the upper districts, Mississippi, and 

 northward. July and August. — Stem 6' -12' high. Leaves 3 - 5-ribbed. 

 Flowers purple. 



3. R. Stricta, Pnrsh. Stem tall, smootli, 4-wingcd, bearded at tlic joints ; 

 leaves lanceolate and ovate-lanccolatc, acute or aciuninatc, ."i-ribbcd, bristly ser- 

 rate, sessile ; cyme comjjound ; calyx smootli, urn-slia])cd, the lobes laneeolatc. 

 — Margins of jionds in the pine barrens. Florida, Georgia, and westward. July 

 and August. — Stem 2° - 4° high. Leaves rugose, the lateral ribs obscure. 

 Flowers purple. 



4. R. glabella, Michx. Stem terete, smooth, mostly simi)lc ; leaves 

 lanceolate, sessile, entire or slightly serrulate, thick, smooth and glaucous ; calyx 

 Rmooth or bristly ; flowers large, bright purple. — Low pine barivns, Florida to 

 North Carolina, and west to Mississippi. June -August. — Root spongy. Stem 

 2°- 3° iiigh. Leaves sweetish. 



* * A nihers short, Mong, erect, not appcndagrd : ticcL' of the calgr short. 

 ■<- Flowers pur/tlc : leaves small, orate or roundish, hrlstlg sirnilalr. 



5. R. ciliosa, Michx. Stem simple, smooth, 4-angled above ; leaves bristly 

 on the upper snifice, 3-ribbcd ; cyme few-flowered, h'afy ; caly.x smooth. — 

 Bogs in the jiine barrens, Florida to Mississippi, and northward. July and 



