[02 KAMXCULACEAE. 



Nymphaea polysepala (Engelm.) Greene. Wokas. Leaves orbicular or 

 broadly oval, deeply cordate, 20-30 cm. long, 12-20 cm. broad; calyx sub- 

 globose, abort 8 cm. broad; sepals 8-12, yellow, often red-tinged; petals 12-18, 

 uneate, truncate, 1-1.5 cm. long; stamens very numerous; fruit sub- 

 pi, ili..~.'. 1 5 cm. long. In ponds and lakes. 



138. BRASENIA. Watershield. 



Aquatic herbs with creeping rootstocks; leaves alternate, long- 

 petioled, centrally peltate, oval, floating; flowers axillary, small; 

 M'pals 3 or 4; petals 3 or 4, linear, sessile; stamens 12—18; pistils 

 4-1 S, forming club-shaped indehiscent pods, each with 1-2 seeds. 



Brasenia schreberi Gmel. Watershield. Leaves alternate, long-petioled, 

 oval, entire or obscurely crenate, centrally peltate, 2-10 cm. long; flowers dull 

 purple; submerged parts of the plant coated with a tough transparent jelly. 

 In lakes, Spokane County. 



Family 38. RANUNCULACEAE. Buttercup Family. 



Annual or perennial herbs or sometimes woody plants with 

 acrid sap; leaves usually alternate (opposite in Clematis), simple 

 or compound; stipules none but the base of the petiole often 

 clasping or sheathing; flowers regular or irregular; sepals 3-15, 

 generally soon withering, often petal-like; petals 3-15, or want- 

 ing; stamens numerous, hypogynous; carpels numerous or few 

 or rarely solitary, separate, 1-celled, 1-many-ovuled ; endosperm 

 present. 



Carpels numerous, 1-ovuled; fruit an akene. 



Leaves opposite. 139. Clematis, 103. 



Leaves alternate or basal. 



Flowers subtended by involucres remote 



from the calyx. 140. Anemone, 103. 



Mowers not subtended by involucres. 

 Petals none. 



I ives ternately decompound. 141. Tiialictrum, 104. 



Leaves simple, palmately lobed. 142. Trautvetteria, 104. 



Petals present. 



pals spurred; akenes in a long 



slender spike. 143. Myosurus, 104. 



Sepals not spurred; akenes in a head. 

 Petals white; akenes trans- 

 versely wrinkled. 144. Batrachium, 105. 

 Petals yellow; akenes smooth. 145. Ranunculus, 105. 

 pels few, 2-many-ovuled; fruit a follicle or 



berry. 

 I lowers irregular. 



Upper Bepal spurred; petals 4. 146. Delphinium, 108. 



I pper sep.,1 hood-like; petals 2. 147. Aconitum, 109. 



Mow ilar. 



ij*spun 148. Aquilegia, 110. 



US 11' 'I BpUl : 



