Oeder 50.— MELASTOMACEiE. 347 



tion, protected northward by glass. In this way double flowers of great beauty 

 may be produced, f 



2 P. nana L. "Shrubby; Ivs. linear-lanceolate, acute. — Native of the "W. 

 Indies, where it is used as a hedge plant. Shrub 4 to 6f high, with smaller 

 purple fls., often double. \ 



Ordeu L. MELASTOMACE^. Melastomks. 



Frees, shrubs or fierls with square branches, and usually exstipulate. Lvs. op- 

 posite, entire and undivided, without dots and with several veins. Cal. persistent, 

 the tube uroeolate, cohering with only the angles of the ovary. Petals as many as 

 the segments of the calyx (4 to 6), twisted in sestivation. Stamens twice as piany 

 as petals, sometimes the same number, inflexed in sestivation. Anthers before 

 flowering contained in the cavity between the calyx and the sides of ovary. l^Vuit 

 capsular or baccate. 



Genera 118, specim 1200. The order is rejiresonted in the U. S. by a single gen\is, the re- 

 mainder bein:? niitives cliiefly of India and tropicil America. No plantof thia order is poisonous. 

 All are sliglitly astringent. 



RHEX'IA, L. Deer-grass. (Gr. pe^ig, a rupture ; some of the 

 species are good vulneraries.) Calyx 4-cleft, swelling at lie base ; 

 petals 4 ; stamens 8, 1-celled ; style declined ; capsule 4-celled, nearly 

 free from the investing calyx tube ; placentae prominent ; seeds nu- 

 merous. — 1( Lvs. opposite, exstipulate, 3-veined. 



S Antliers curved, saccate at base, with a bristly appendage at the insertion 



of the filament. — Stem square, winged Nos. 1 9 



— Stem terete or teretish Nos. 8r-5 



§ Anthers straight, terminal. — Stems simple, with purple flowers .-Nos. 6, 7 



— Stems brachiate, with yellow flowers No! 3 



1 R.,Virgmica L Meadow Beauty. St. square, the angles narrowly winged ; 

 lvs. sessile, oval-lanceolate, ciliate-serrulate, and with the stem clothed with scattered 

 hairs; cal. hispid. — Grows in wet grounds, Mass. to 111. and La. St. If or more 

 high, often .B-forked above. Lvs. with 3 (rarely 5 or '7) prominent veins, 1 to 3' 

 long, about ^ as wide, acute. Fls. large, in corymbous cymes. Petals bright 

 purple, obovate, hispid beneath, caducous. Anth. long and prominent, crooked, 

 golden yellow above, with a purple line beneath. Sty. somewhat longer than the 

 stamens, a, little declined. Jl., Aug. 



2 H. stricta Ph. St. tall, with 4 strongly winged angles, glabrous ; lvs. ovate- 

 lanceolate, acuminate, setaceously serrate, glabrous, or slightly hispid above- 

 cal. glaltrous, the tube very short. — Bogs around pine barrens, S. Car. to Ala. and 

 Ha. St. 3 to 4f high, slightly bearded at the joints. Lvs. 2 to 3' long. Pis. 

 purple, large and fine. Jn., Jl. 



3 R. Mariana L. St. nearly terete, covered with bristly hairs ; lvs. lanceolate, 

 acute, attenuate at base into a very short petiole, and, with the calyx clothed with 

 scattered hairs. — In sandy bogs, N. J. to Plor. The whole plant is hispid, even 

 the petals externally. St. 1 to 2f high, slender, and generally vrith few branches. 

 Lvs. often narrowly oblong, 4 to 6 times longer than wide, serrate-oiliate. Petals 

 large, obovate, purple. Jn. — Sept. 



4 R. lanoeolata Walt. St. much branched, hirsute, teretish; lvs. linear and 

 lance-linear, attenuate to a short petiole, slightly hispid and eihate ; fls. very pale, 

 in fastigiate cymes ; cal. glabrous. — Damp soils, W. Car. to Fla. and La. Sts. 1 

 to 2f high, very leafy, growing in dense patches, with numerous white or pale 

 purple fls. Lvs. 7 or 8 times longer than wide. Jn. — Aug. 



5 R. glabella Ph. Glabrous and somewhat glaucous; st. simple, teretish; lvs. 

 lanceolate ; calyx glandular-hispid. — Damp woods, N. Car. to Pla. and La» St. 

 2 to 3f high, dividing at top into a few peduncles. Lvs. mostly longer than the 

 internodes (1 to 2'), obscurely serrulate, acute, sessile. OaL rather funnel form 

 above the ovary Petals pale purple, large, expanding near 2'. Jn. — Aug. 



