PLANTAGINE.E 399 



Stem annual, terete, erect, glandular-pubescent ; 1st internode 

 1-7-2-6 cm. long; 2nd similar, or somewhat shorter. 



Leaves cauline, opposite, decussate, tapering to the base, sessile, 

 and slightly connate, with an indistinct midrib, glandular-pubescent, 

 exstipulate. 



First pair linear, slender, similar to the cotyledons. 



Second pair linear, obtuse, entire, or with one or two obsolete 

 teeth on each side. 



Third to seventh pairs linear, broadest above the middle, dis- 

 tantly and obsoletely dentate, teeth glandular. 



Plantago callosa, Coll. 



Primary root very long, flexuose, wiry, annual. 



Hypocotyl erect, terete, glabrous, deep purple or red, 1-8-2-8 cm. 

 long. 



Cotyledons linear, acute, terete, glabrous, sessile and connate at 

 the base, forming a cup surrounding the rosette of leaves, 2-8-3-7 

 cm. long. 



Stem with the iiitemodes undeveloped. 



Leaves simple, entire, radical, alternate, sessile, clasping at the 

 base, hoary or felted with a white tomentum. 



No. 1. Linear, semiterete, flattened above, very thinly hairy, or 

 pilose. 



No. 2. Larger and shallowly channelled above. 



Nos. 3 and 4. Tomentose and deeply furrowed above. 



Nos. 5 and 6. Broader, tomentose, with a wide deep channel 

 above, and obtusely carinate beneath. 



Plantago lanceolata, L. (fig. 600). 



Ovary two-celled, with axile placentation bearing about midway 

 between the base and apex of each cell two amphitropous ovules ; 

 micropyle inferior. 



Capsule oblong, obtuse at either end, glabrous, two-celled with 

 one perfect seed in each cell, dehiscing circumscissly about one- 

 third above the base. 



Seed oblong, obtuse at either end, peltate, equalling the interior 

 of the cell in length and breadth, concave on the ventral face and 

 appearing boatshaped, smooth, pale green in the immature state, 

 then becoming colourless or pale yellow and subtransparent, after- 

 wards deep shining brown and still semitransparent when fresh, 

 ultimately deep brown ; hilum oval, forming a white or pale spot 

 on the ventral aspect about or a little below the middle ; micropyle 

 and radicle inferior. 



