RUBIACEAE 1263 
1. E.littoralis Sw. Stem and branches ipid. l1 fleshy; blades mainly 
a siege neti uu o, 2-3.5 em. long: corolla white: ; tube mostly 
r 10 m ong: anther er 2 mm mun Jodi. 
deese mostly El on a sand- dunes à 
and rocky shores, southern pen. Fla. an d 
the Keys.—(W. I.) 
2. E. angusta Small Stem and brane 
0 
leaves firm; blades linear, 2-4 cm 
corolla usually reddish ; tube mostly less 
than 10 . long: anthers over 1.5 mm. 
. J.)—Our two species occupy quite dif 
ferent hanes but they are both sprawling 
or creeping vine-like sive: The first spe- 
cies grows in the poorest soil, the coastal 9 l 
dunes, where it completely covers large areas of sand with its wiry stems and 
myri riad lea 
21. DIODIA [Gronov.] L. Perennial creeping herbs. Leaf-blades soft- 
herbaceous. Flowers x ipsi) Sepals 2. Corolla white or pink, salverform, 
with a long slender tube and 4 narrow lobes. Stamens 4: fi aments adnate to 
the top of the SU tube, the free portion elongate: anthers linear. Stigmas 
filiform. Drupe thin- -fleshy, duin About 20 species, mostly American.— 
Spr.-fall, or all year S.—BUTTO EDS. 
Corolla-tube over 6 m long: capsule oval or ellipsoid: qnid ciliate, 
Stem sparingly p hes cent on the angles or nearly gl abro 
Capsules ellipsoid : leaf-blades narrowed at the base. 1. D. virginiana, 
Capsules oval: leaf-blades truncate or subcordate at the 
ase, 2. D. tetragona. 
Stem hirsute. 3. D. hirsuta. 
Corolla-t (uo less than 5 mm. long: capsule globular: sepals 
cilia 4. D. Harperi. 
1. virginiana L. Stem branching, 1-15 dm. lo ong, sparingly pubescent on 
the angles: leaf- s E Du Ma linear- pug 3-8 cm. long, acute 
als 
or atuminate: sep ar to ar-lane 
late, 4-6 mm. long: poss habe m 
long: fruit 7-9 mm. long.—Low gr ounds, bui 
ng. 
Swamps, and stream banks, Coastal Plain, 
Fla. to Tex., Mo., and N. J. 
2. D. di dpa Walt. Stem branching, 
2-10 dm. long, the- ird often pubescent: 
leaf ‘blades spatulate to obovate, usually 
somewhat rhombic: sepals ovate to ovate- 
oo 4—5 mm. long: corolla-tube 6.5-7 
ong: fruit 4.5-5.5 mm. lon PN 
sandy Soil, Coastal Plain, Fla. to La. an 
C. 
3. hirsuta Pursh. Stem branching, 1-8 
dm Po hirsute throughout: leaf-blades thickish, linear- -spatulate E linear, 
2-5 e ong, somewhat acuminate: P subulate- lanceolate, 4— 
corolla -tube 8-10 mm . long: fruit 7-9 mm, long.—Sandy soil, quise Plain, 
la. to N. C. 
