MELASTOMACEAE 823 
minal pore. Ovary sessile, 4-celled, free: style slender: stigma truncate. Ovules numer- 
ous on the 4 placentae. Capsules 4-celled, 4-valved, included. Seeds variously roughened, 
coiled or bent. MrADOW-BEAUTY. 
Anthers relatively short, oblong, not spurred at the base. 
Corolla purple or rarely white. 
Hypanthium glandular-pubescent: upper surface of the leaf-blades glabrous. 1. R. serrulata. 
Hypanthium glabrous: upper surface of the leaf-blades bristly. 2. R. ciliosa. 
Corolla yellow. 3. R. lutea. 
Anthers elongated, linear, spurred at the base. 
Neck of the mature hypanthium as long as the body or longer. 
Leaf-blades narrowly linear, the midrib only prominent and conspicuous. 4. R. Floridana. 
Leaf-blades not linear, the 3 nerves prominent and conspicuous. 
Stems rather sparingly pubescent with delicate hairs: leaf-blades nearly 
glabrous. 5. R. Mariana. 
Stems densely pubescent with coarse yellow hairs: leaf-blades shaggy-pu- A 
bescent with hairs like those on the stem. 6. R. Nashii. 
Neck of the mature hypanthium much shorter than the body. 
Stems and branches terete or nearly so. 
Hypanthium glabrous or with a few scattered hairs. 
Leaf-blades over 2 mm. broad : hypanthium with a few scattered hairs 
Leaf-blades linear to lanceolate. 7. R. lanceolata, 
Leaf-blades oval, elliptic or oblong-ovate, yery thin. 8. R. delicatula. 
Leaf-blades less than 2 mm. broad : hypanthium glabrous. 9. R. filiformis. 
Hypanthium densely glandular-pubescent. 10. R. glabella. 
Stems sharply angled or narrowly 4-winged. 
Corolla over 2 cm. broad, colored. 
Sepals less than 14 as long as the hypanthium at maturity. E 
Stems with pubescent internodes: hypanthium pubescent at maturity. 11. R. Virginica. 
Stems with glabrous internodes: hypanthium glabrous at maturity. 12. R. stricta. 
Sepals fully ! as long as the hypanthium at maturity. 13. R. arístosa. 
Corolla less than 2 em. broad, white. 14. R. parviflora. 
1. Rhexia serrulàta Nutt. Stems slender, glabrous below, erect, 5-30 cm. tall, 4- 
angled, sometimes sparingly branched: leaf-blades thickish, ovate, oval or suborbicular, 
0.5-1 cm. long, obtuse or acute, bristly serrulate, sessile or nearly so: flowers solitary or in 
congested cymes : hypanthium bristly with glandular hairs when young : sepals triangular : 
petals purple, about 10 mm. long, apiculate: anthers oblong, not spurred : capsules sphe- 
roidal, 4 mm. broad, much longer than the very short neck of the hypanthium. 
In pine-land swamps and low ground, Georgia and Florida. Summer. 
2. Rhexia ciliósa Michx. Stems rather slender, erect, 2-6 dm. tall, 4-angled, glabrous 
or nearly so, the branches erect or strongly ascending: leaf-blades 1-2 cm. long, broadly 
ovate to ovate-lanceolate, or elliptic, acute, bristly serrulate, usually with scattered hairs 
above, rounded at the base, sessile or short-petioled: flowers usually in congested cymes, 
short-pedicelled : hypanthium becoming glabrous: sepals triangular, acute: petals 9-15 
mm. long, violet-purple or deep pink, rounded or apiculate at the apex: anthers oblong, 
not spurred : capsules subglobose, 4-5 mm. in diameter, much longer than the neck of the 
hypanthium. 
In sandy swamps, Maryland to Florida and Louisiana. Spring and summer. 
3. Rhexia lütea Walt. Stems deep green, bristly-pubescent, erect, 1-3 dm. tall, 
4-angled, simple, or finally with numerous short branches above: leaf-blades 1-2.5 cm. 
long, the upper ones linear-oblong to oblong, acute, the lower cuneate, obtuse, all bristly- 
serrulate, more or less reflexed : flowers rather short-pedicelled or nearly sessile, numerous : 
hypanthium glabrous in age: sepals lanceolate or ovate-lanceolate, acuminate: petals deep 
green, 9-13 mm. long, spreading, more or less distinctly awn-tipped : anthers narrowly 
oblong, often shorter than the filaments: capsules subglobose, 4 mm. in diameter, longer 
than the neck of the hypanthium. 
In low sandy pine lands, North Carolina to Florida and Mississippi. Summer. 
..*. Rhexia Floridàna Nash. Stems olive-green, erect, 2-5 dm. tall, 4-angled, often 
diffusely branched, glandular-hirsute : leaf-blades linear, 1.5-4 cm. long, glabrous, acute, 
remotely bristly-serrulate, sessile: flowers short-pedicelled, in open cymes: hypanthium 
bristly when young, glabrous in age: sepals lanceolate or triangular-lanceolate, acuminate : 
etals purple, 11-17 mm. long, awn-tipped, each awn terminating in a gland: anthers 
near, mainly 1 cm. long, slightly spurred at the base: capsules ovoid, 6-7 mm. long, 
about as long as the neck of the hypanthium. 
In sand or clayey swamps, southern Georgia and Florida to Mississippi. Summer. 
5. Rhexia Mariàna L. Stems erect, 2-8 dm. tall, villous-hirsute, simple or much 
branched, nearly terete: leaf-blades narrowly oblong, lanceolate or elliptic-lanceolate, 
1.5-8 em. long, acute, bristly-serrulate, nearly glabrous, narrowed into short petioles: 
flowers in open cymes, short-pedicelled : hypanthium sparingly pubescent, or glabrous in 
age: sepals ovate or triangular, acute : petals pale or deep purple, 14-28 mm. long, often 
