WHITE GROUP 



pink blossoms on stems from a short rootstock. Leaves, divided 

 into 7 to r3 leaflets, the lower leaflets stalked, upper sessile. May. 



New Jersey southward. (See p. 260 under Pink Group.) 

 Hairy Rock Cress 



Arabis hirsuta. — Family, Mustard. Color, white or greenish. 

 Flowers similar to others of this Family. Pod, long, slender, up- 

 right, 2-valved by a thin partition. Stem, roughish, ereet, simple 

 (unbranched) , 1 to 2 feet high. Leaves, long, narrow or oblong, 

 partly clasping the stem by somewhat arrow or heart-shaped 

 bases. May and June. 



Wet places in the Middle States. 



A* laevigata has root-leaves occasionally lyre-shaped, stem- 

 leaves similar to those above. A smooth plant, taller than the 

 last. 



Sickle Pod 



A. canadensis has sessile stem-leaves, acute at apex and base, 

 the lower ones toothed. Pods, rough and hairy, flat, curved, 

 on hairy stalks. 



Tower Mustard 



A, glabra is the tallest species, 2 to 4 feet, with yellowish-white 

 petals, oblong or lance-shaped stem-leaves, pods 3 inches long, 

 very narrow. Around rocks. 



A. lyrata differs in having much cut and lyre-shaped root- 

 leaves, with stem-leaves entire or sometimes toothed. Petals, 

 long. Sepals, yellowish green. 



These all bear rather small white blossoms in terminal, 

 flattish racemes, found in rocky woods. 



Spider-flower 



Clebme spinbsa. — Family, Caper. Color, white or crimson. 

 Calyx, 4-cleft. Corolla, of 4 petals on long claws. Stamens, f>, 

 equal in length, with very long, thread-like filaments. Pistil, a 

 very long stalk, at the end of which the seed-vessel is borne. Pod, 

 long, many-seeded. Leaves, long-petioled, much cut, the leaflets 

 5 to 7, finely serrate, lance-shaped. 



A showy flower found in many gardens, also here and 

 there escaped from cultivation. 



Round-leaved Sundew 



Drosera rotundifblia. — Family, Sundew. Petals, sepals, sta- 

 mens, 5, or sometimes 6. Styles, 3 to 5, so deeply divided as to 



Si 



