34 COMMON CANADIAN WILD PLANTS. 



4. ARENA'KIA, L. SanbwOKT. 



1. A. serpyllifo'lia, L. (Thyme - leaved S.) Much 

 branched, 2-6 inches high, roughish-pubesoent. Leaves 

 small, ovate, acute. Petals white, hardly as long as the 

 sepals. Sepals pointed, 3-5-nerved. Pod pointed, 6-toothed, 

 — Sandy fields. 



2. A. strieta, Michx. {A. MichauxU, Hook., in Macoun's 

 Catalogue.) Stem erect, or diffusely spreading from a, small 

 root. Leaves awl-shaped or bristle-form, the upper ones 

 reduced to l-nerved bracts, crowded in the axils. Cyme 

 diffuse, many-flowered. Sepals pointed, 3-ribbed, half as 

 long as the white petals. — Eocky fields. 



3. A. lateriflo'ra, L. Stem erect, slender, minutely 

 pubescent. Leaves oval or oblong, |-1 inch long. Peduncles 

 usually three-flowered. Sepals obtuse. Petals white, large, 

 twice as long as the sepals. Plower J of an inch across 

 when fully expanded. — Gravelly shores. 



4. A. Grcenlan'diea, Spreng., is densely tufted, with soft 

 filiform-linear leaves. Flowering stems erect, smooth, 2-4 

 inches high, few-flowered. Sepals oblong, obtuse, nerveless. 

 — Atl. sea-coast. 



5. A. peploi'des, L., with very fleshy stems and leaves, the 

 latter somewhat clasping, occurs eastward towards the sea- 

 coast. 



5. STEI/IiA'RIA, L. CmcKWEED. Staewoet. 



1. S. media. Smith. (Common Chickwbed.) Stems 

 branching, decumbent, soft and brittle, marked lengthwise 

 with one or two pubescent lines. Lower leaves on hairy 

 petioles, ovate. Flowers small, white. Petals shorter than 

 the sepals. — Extremely common in damp grounds and old 

 gardens. 



2. S. longifo'lia, Muhl. (Long -leaved Stitchwort.) 

 Stems branching, very weak and brittle, supporting them- 

 selves on other plants. Leaves linear. Pedicels of the 

 flowers long, slender, and spreading, reflexed. Petals white, 

 longer than the 3-nerved sepals. — Low grassy banks of 

 streams. 



