ht, reddish yellow, in shape and markings much like
those of V. peregrina, flattened, broadly oval to obovate .5-.7 mm.
long, with a small scar near the middle on one side, from which extends
a dark line (raphe) to one extremity.
Apparently native to this country.
Seeds of the Veronicas are very difficult to distinguish from one
another.
PLANTAIN FAMILY. PLANTAGINACEAE.
[Illustration: Fig. 171.]
=Sand Plantain.= _Plantago arenaria_ W. & K. Seeds dark amber brown,
shining, rounded on the back like the bottom of a shallow canoe, 2.5-3
mm. long, transverse groove around the middle of the back, opposite side
with a groove extending lengthwise, about as wide as the ridge on either
side of it; hilum in the middle of the groove. Found at Harrisville,
Mich.
[Illustration: Fig. 172.]
=Large-bracted Plantain.= _Plantago aristata_ Michx. Seeds oval, dull,
light to dark brown, 2.2-3 mm. long, shaped like a shallow, thick-walled
canoe with ends rounded alike, outer face marked by a shallow,
transverse groove at or near the middle, a white line marking the margin
at the base on the canoe inside, two white-margined pits occupying the
middle of the concave side. Introduced from the west in clover seeds,
not yet common.
[Illustration: Fig. 173.]
=Rib-Grass. Narrow-leaved Plantain.= _Plantago lanceolata_ L. Seeds
shining, amber-colored to brown, oval, 2-2.5 mm. long, shaped like a
shallow, thick-walled canoe with ends rounded alike, a dark scar
occupying the middle of the narrow concave side, a faint, transverse
groove across the convex side near the middle sometimes apparent. Often
found mixed with clover seeds from which it is very difficult to
separate. Introduced from Europe.
[Illustration: Fig. 174.]
=Broad-leaved Plantain.= _Plantago major_ L. Seeds, light to dark brown
or very nearly black, 1-1.5 mm. long, slightly flattened, with acute
edges very variable in shape, oval, oblong, rhomboidal and trapezoid,
the surface roughened by slender, colored ridges, appearing under the
lens as slightly wavy lines, radiating from the scar. The clear light
green color of the lower end of the leaf-stem is an easy mark to
distinguish this plant from another broad-leaved plantain, _P. Rugelii_
in which the base of leaf is red. Introduced from Europe. About door
yards.
[Illustration: Fig. 175.]
=Rugel's Broad-leaved Plantain.= _Plantago Rugelii Decne._ Seeds dark
brown to black, much like those of P. major, but lar
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