80 (79) Stipules, tubular, truncate and clasping stem, giving 

 the appearance of a jointed stem; leaves linear-filiform; 

 flowers rose or white in slender terminal racemes; fruit 

 an achene; plants of the back dunes and cobble beaches. 



Polygonella articulata, 



Jointweed 



Figure 84.- 



-Stem, stipules 

 and leaves X4. 



81 (79) Plants with many erect stems from a biennial or perennial woody tap root. 

 81 (79) Plants with a single or a few erect stems from a tap root or fibrous root. . . 



82 

 83 



82 (81) Very leafy stems from 1-4.5 dm high, smooth, 

 no pubescence; leaves obovate to elliptic and 

 only 2 cm long; loose terminal racemes 2-12 cm 

 long, rose-pink to rose-purple flowers, minute 

 cleistogamous (closed colorless, self fertile flow- 

 ers) flowers and capsules in one-seeded racemes 

 at base of plant after showy flowers ; plants of 

 sea cliffs and bask dunes. . .Poly gala polygama var. ohtusa. 

 Milkwort 



Figure 85. — (a) Stem and leaves; 



(b) raceme and cleistogamous flowers X3. 



82 (81) Leafy stems to 1 dm tall, densely covered with white 

 hairs; leaves lanceolate to elliptic, three to four 

 times as long as broad, whorled on stem or alternate 

 in flower panicle, starting about middle of stem ; old 

 flower stalks persisting into next year; plants of 



dunes (Hudsonia zone) Lechea maritima, 



Seaside Pinweed 



Figure 86. — Stem and whorl of leaves XL 



35 



