ANALYTICAL KEY 19 



n. Stamens ten. 

 o. Stems with two opposite leaves; petals pinnatifid. 



BISHOP'S CAP, MITELLA DIPHYLLA (p. 75). 

 o. Stems leafless, or if leafy, leaves not opposite; petals entire. 



FALSE MITREWORT, TIARELLA CORDIFOLIA (p. 74). 

 k. Leaves compound. 

 1. Leaves without stipules; sepals, petals, and ovaries 3. 



FALSE MERMAID, FLOERKEA PROSERPINACOIDES (p. 88). 

 1. Leaves with stipules (Rose family). 

 m. Flowers yellow (Cinquefoil). 



n. Leaves pinnate, white-tomentose beneath; perennial, spreading 

 by runners. SILVER WEED, POTENTILLA ANSERINA (p. 79). 

 n. Leaves palmate. 



O. Annual or biennial with stout, erect stems; leaves 3-foliolate. 

 POTENTILLA MONSPELIENSIS (p. 78). 

 o. Perennials with procumbent stems. 

 p. Leaflets clearly five, white-woolly beneath. 



SILVERY CINQUEFOIL, POTENTILLA ARGENTEA (p. 78). 



p. Leaflets three, but appearing to be five by the division of 



the laterals; leaves pubescent, but not white-woolly beneath. 



COMMON CINQUEFOIL, POTENTILLA CANADENSIS (p. 79). 



m. Flowers white. 



n. Leaves all radical; propagating by leafless runners that root 



at the end; achenes exposed (Strawberry). 

 O. Achenes in pits; leaves moderately veiny. 

 COMMON WILD STRAWBERRY, FRAGARIA VIRGINIANA (p. 78). 

 o. Achenes superficial; leaves strongly veiny; a woodland plant. 

 WOOD STRAWBERRY, FRAGARIA VESCA (p. 78). 

 n. Plants with leafy stems; not propagating by leafless runners; 



achenes enclosed (Rubus). 

 0. Plants without prickles; leaves delicate, not evergreen. 



DWARF RASPBERRY, RTIBUS TRIFLORUS (p. 81). 

 0. Plants with prickles; leaves leathery, tending to be evergreen. 



RTJBTJS HISPIDTJS (p. 81). 

 1. Pistil only one, often more than one-celled, the carpels then being 



united into a compound pistil. 

 j. Aquatic plant; leaves large, floating; flowers yellow. 



YELLOW POND LILY, NYMPHAEA AD VENA (p. 58). 

 j. Terrestrial plants. 

 k. Plants with colored juice. 

 1. Juice reddish orange; petals white. 



BLOODROOT, SANGUINARIA CANADENSIS (p. 69). 

 1. Juice and petals yellow. 



CELANDINE POPPY, STYLOPHORTTM DIPHYLLT7M (p. 69). 

 k. Plants with watery juice. 

 1. Flowers yellow or yellowish (p. 20). 

 m. Some of the floral parts in fours or sixes (p. 20). 

 n. Sepals, petals, and stamens six. 



BLUE COHOSH, CAULOPHYLLTJM THALICTROIDES (p. 67). 

 n. Sepals and petals four; stamens six (Crucifers). 

 0. Plant perennial, with lyrate root leaves, smooth. 



WINTER-CRESS, BARBAREA VULGARIS (p. 72). 

 O. Plant annual, pubescent (Mustard). 



