FREE BOOKS

Author's List




PREV.   NEXT  
|<   38   39   40   41   42   43   44   45   46   47   48   49   50   51   52   53   54   55   56   57   58   59   60   61   62  
>>  
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
PREV.   NEXT  
|<   38   39   40   41   42   43   44   45   46   47   48   49   50   51   52   53   54   55   56   57   58   59   60   61   62  
>>  



Top keywords:
middle
 

Plantago

 

Plantain

 
Illustration
 

groove

 

shallow

 
leaved
 

transverse

 

Introduced

 
rounded

occupying

 

colored

 

shining

 
clover
 
concave
 

walled

 

Europe

 

slightly

 
shaped
 

difficult


distinguish

 

flattened

 

Rugelii

 

narrow

 

apparent

 

separate

 

convex

 

appearing

 

radiating

 

ridges


slender

 

variable

 
oblong
 

surface

 

roughened

 
trapezoid
 

rhomboidal

 

plantain

 

PLANTAGINACEAE

 

FAMILY


PLANTAIN

 

Veronicas

 
arenaria
 

opposite

 

extending

 
bottom
 

country

 
native
 
peregrina
 
markings