804 CALLITRICHACEAE 
minute, often scale-like, fleshy, early de- 
ciduous, or obsolete. Involueres solitary or 
clustered, each with five mostly unappend- 
aged glands. Capsule usually smooth.— 
About 30 species, of the Old World. 
l. E. lactea Haw. Plants 1-5 m, 
eopiously branched, E branches 3- ELT 
the angles repand, with the e bos 
marbled: spines Pug subulate, 3-7 
long, divergent: leaves between i ts Spi pen 
a. suomi cular to orbicular-reniform, 
m. wide, . us. nearly sessile.— 
(afore sro) Hamm ocks and waste- 
plaees, Florida Key Nat. of E. I.—(W. 
I., Mex dur eus id Ex for ornament and for hedges in tropical regions. 
0. TITHYMALUS Mil. Shrubs with fleshy branches. Leaves succu- 
lent: blades flat, entire or undulate-erisped. Involucres borne in dichotomous, 
often contracted cymes, oblique and stron 
2-lipped, the lower tip much larger than the 
upper. Caps 
keeled or horned.—About 30 species, tropi- 
eal American. [Pedilanthus Neck.] 
1. T. Smalli (Millsp.) e Plant 3-16 
dm. tall or more, the stem and branches 
sien zigzag: leaves spreading; pu 
vate to ovate-lanceolate, 4—1 in- 
Mos s 12-14 mm. long, ma n " "the two , 
lange o broadly ovate, ciliolate: sta- | 
ns style exserted: eapsule 6-7 mm 
Pinelands Bverglade Keys, pen. Fla. and Florida Keys. Nat. of trop. Am., and 
eult.—All year.—Used medicinally. 
Faminy 2. CALLITRICHACEAE — Nao FAMILY 
Herbs, often a 2d tender tissues. Leaves opposite: blades 
entire, or 3-nerved. Flowers polygamous, minute, axillary, often ee ly 
bracted alyx ere i orolla wanting. Androecium of single 
of 4 united e e Ovary 4celled. Fruit cori- 
aceous, “indehiscent, 4-lobed. —One g 
RICHE L. Aquatic or more or less amphibious plants, the 
opposite leaves often E e or eae at the ends of the stem and 
nches. Flowers inconspicuous, green.— About 20 species, of wide geographic 
distribution. —WATER-STARWORTS. 
Carpels permanently united: leaf-blades in terrestria! plants, or of E leaves 
in aquatics, obovate to spatulate and 3-veine I 
Carpels, in fruit, separate RNY to the axis: leaf-blades uni- 
formly linear and 1-veine II. AUTUMNALES. 
