=Velvet-Leaved Mullein.= _Verbascum Thapsus_ L. Flowers yellow; pod 6 mm. high; seeds cannot be distinguished with certainty by means of the ordinary lens from those of moth mullein. The pitted surface seems to predominate in _Verbascum Blattaria_, while the grooved surface seems to be more common in the seeds of V. Thapsus. Introduced from Europe. Common in thin pastures. [Illustration: Fig. 167.] =Wall Speedwell.= _Veronica arvensis_ L. Pods heart-shaped; seeds dull, light yellow, flattened, oval, .7-1.1 mm. long on one side appearing as though the two ends had been brought together by bending. From Europe. [Illustration: Fig. 168.] =Common Speedwell.= _Veronica officinalis_ L. Pods heart-shaped; seeds dull, pale yellow, flattened, broadly oval to broadly obovate, .8-1.2 mm. long, with a small scar near the middle of one side, from which extends a faint line (raphe) to one extremity. Appearing as though introduced. [Illustration: Fig. 169.] =Purslane Speedwell.= _Veronica peregrina_ L. Pods heart-shaped; seeds dull, light reddish yellow, flattened, oval to broadly obovate .5-.8 mm. long, with a small scar a little above the middle of one side, from which extends a dark line (raphe) to one extremity. Most likely native to this country. [Illustration: Fig. 170.] =Thyme-leaved Speedwell.= _Veronica serpyllifolia_ L. Pods broadly heart-shaped; seeds pale yellow, a trifle darker than those of V. officinalis, light, 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.]