120 NEW YORK STATE Ml SEUM 



Mustard Family 



Cruciferae 



Lyre-leaved Rock Cress 



Arabis lyrata Linnaeus 



Plate- .i)!) 



A low, tufted perennial or biennial plant with ascending or erect stems, 

 4 to 12 inches high, smooth above, pubescent below or glabrous throughout. 

 Basal leaves lyrate-pinnatifid, i to 2 inches long, spatulate or oblanceolate, 

 pubescent or glabrous; stem leaves entire or toothed, spatulate or linear, 

 one-half to i inch long. Flowers white, one-fourth of an inch broad 

 or less, several or numerous in a terminal raceme which elongates in 

 fruit; pedicels ascending, about one-third of an inch long or longer in fruit; 

 petals four, much longer than the four stamens. Fruit a linear, slightly 

 flattened pod three-fourths to i^ inches long; seeds in one row, oblong 

 and wingless. 



Rocky and sandy places, Connecticut and Ontario west to Manitoba 

 and Alaska, south to Virginia, Tennessee, Missouri and British Columbia. 

 Flowering from April to September. 



Bulbous Cress; Cuckoo-flower 



Cardamine bulbosa (Schreber) Britton, Sterns & Poggenberg 



Plate 90a 



A slender, erect, herbaceous plant with smooth stems, 6 to 20 inches 

 high from a perennial, tuber-bearing root, simple or rarely branched. 

 Leaves of two sorts, those of the stem sessile and clasping or the lower ones 

 very short petioled, rather distant from one another, oblong or lanceolate, 

 blunt, toothed or entire, 1 to 2 inches long; the basal leaves oval or 

 orbicular, one-half to 2 inches broad, often slightly heart-shaped, toothed 

 or usually entire, with long, slender petioles. Flowers white, about one- 

 half of an inch broad, in a terminal, several to many-flowered cluster; 

 petals four, three to four times the length of the four sepals. Fruit a 



