Order 51.— LOOSESTRIFES. 209 



b Flowers in panicles. Leaves lance-ovate 3, 4 



b Flowers in corymbs or little umbels. Leaves oval or ovate 5, 6 



1 S. opulifo'lia. Kine-bark. Leaves simple, 3-lobed. Corymbs umbellate. N. 



2 S. sorbifo'lia. Sorb-leaved M. Leaves odd-pinnate. Flowers in panicles. 



3 S. tomentc'sa. Hard-hack. Lvs. with si rusty white dense wool beiieath. 



4 S. salicifo'lia. JViUow-lenved. Lvs. nearly smooth. Shrub 3 or 4f. high, 

 f) S. corymbo'sa. Corymb very large, terminal, flat-topped. Height l-2f. S. 



T) S. hypericefo'lia. St. Peter's Wreath. Little umbels many, lateral. Cultivated. 



7 Leaves once-pinnate. Liflorescenee terminal, on a long stalk 8, 9, 10 



7 S. Arnn'cus. Goaf s Beard. Lvs. thrice-pinnate. Fls. in slender spikes. M 



S S. loba'ta. Queen of the Prairie. Flowers purple. Side leaflets 3-lobed. W. 



9 S. filipen'dula. Dropwort. Fls. white. Lfts. pinnatifid-serrate. Gardens. 



10 S. Ulma'ria. Meaduw-sweet. Flow^ers white. Lfts. doubly-serrate. Gardens. 



Ojjder L. MELASTOMAOE^. Melastomes. 



Plants \Nitli square branches, and opposite, simple, 3-7-Yeined leaves; 

 flmcers with adherent calyx tube, twisted petals, and definite stamens. 

 anthers opcuing by terminal pores. Fruit a capsule or berry, 



RHEX'IA. Deer-grass. 

 Perennial herbs, with showy flowers. Leaves 3-5-veined. Calyx tube 

 prolonged and narrowed above the ovary, 4-cleft. Petals 4. Anthers 8, 

 1-celled. Style declined. Capsule 4-celled, go - seeded. 



* Anthers curved, linear, gppendaged at base. Flowers purple (a) 



* Anthers straight, oblong, not appendaged. Maryland to Fla Nos. 5-7. 



a Stem pqnarc, winj^ed. Lvs. ovate to lanceolate, bristly-serrate Nos. 1, 2. 



a Stem terete or teretish. Leaves lanceolate to linear . . .Nos. 3, 4. 



1 R. Virgin'ica. Ileadoiv Beauty. Plant 12-18' high, with scattered hairs, sessile leaves 



and a large cyme oC bright purple flowers. Wet grounds. 



2 R. stricta. Plant 3-4f. high, smooth, calyx smooth, tube very short. S. 



3 R. Maria'na. Hairy. Leaves on short petioles, bristly-serrate. l-2f. 



4 R. glabel'la. Glabrous. Leaves se?i?i]e. Calyx hispid. Damp woods. S. 



5 R. cilio'sa. Leaves broad-ovate, bristly ciliate. Petals purple. South. 



6 R. serrula'ta. Leaves small, roinul-oval, serrulate-ciliate. Flowers purple. S. 



7 R. lu'tea. Leaves oblong-llucar. Flowers panicled, yellow. Woods. S. 



Okder LI. LYTHEAOE^. Loosestrifes. 



Phints with entire, exstipulate, mostly opposite leaves; 



r.ah/.v tubular, bearing the 4-7 petals and 4-05 stamens on its throat. 



uuiry and style compound. Fruit a capsule, or fleshy ; many-seeded. 



