56 
b. Heads ovoid to globose, not a dae RR ous АПИЙ ДИНЕ Ta ee 154. 
154 a. Heads ovoid; flowers red to purple; plant somewhat ШИГ; s vues I55. 
b. Heads glob fi pinl white; pl ЖАЙУУ sd grs ORT oe 156. 
155 а. Leaflets usually spotted near the middle; leaflets finely toothed. 
Clover. (Trifolium pratense.) 
© 
- Leaflets not spotted; leaflets entire. 
Mammoth Clover. (Trifolium medium.) 
156 a. Flowers pink to white; plant not rooting at the nodes. 
Alsike Clover. (Trifolium hybridum.) 
b. Flowers white; plant rooting at the nodes. 
White Clover. (Trifolium repens.) 
157 а. Plant 5 ft. or more long, twining. 
Dutchman’s Pipe. (Aristolochia macrophylla.) 
i 158. 
b. Plant less than 5 ft. VE PME DM uu ev. 5 
158 a. Flowers without a spur on the petals; leaves clustered near the summit of 
Ше шет IS S ooo Fringed Milkwort. (Polygala paucifolia.) 
b. Flowers with 1 petal кии MORE Leonie О ЕА 159. 
. long. 
Green Violet. (Cubelium concolor.) 
b. Lower petal spurred; flowers more than ТШ o cM у, Ол ур. 160. 
a 
b. Leaves not all basal; flower-stalks from axils of 1еауев........ 743. 
161 a. Part or all of leaves deeply lobed or cleft, not merely incised at the base. . 162. 
b. Leaves not deeply lobed or cleft, sometimes incised at the base....... 164. 
162 a. Plant hairy; lobes of leaves toothed or cleft 
Early Blue Violet. (Viola palmata.) 
POM cc eo ee ООВ 163. 
b. Plant + 1.1 
iceably hairy 
163 a. Some petals with coarse hairs on inside. 
Coast Violet. (Viola Brittoniana.) 
b. Petals not with hairs on inde... 2, : Bird’s-foot Violet. (Viola pedata.) 
164 a. Flowers white with РИНЕ SEMI essor a 165. 
b. Flowers some shade of P О violet oie vasa ri aser Und. s 167 
165 a. Leaves broadly heart-shaped or rounded; flowers fragrant. 
Sweet White Violet. (Viola blanda.) 
b. Leaves not as in 1i Rowen not лаш E T TT OP NO 166. 
166 a. Leaves ovate to oblong.....Primrose-leaved Violet. (Viola brimulaefolia.) 
b. Leaves lanceolate.............. Lance-leaved Violet. (Viola lanceolata.) 
167 a. Flowers fragrant; stolons pteaemt.. ss. English Violet. (Viola odorata.) 
. Flowers not fragrant; stolons not prets... iioii е ш 168 
168 a. Leaves heart-shaped, often broader than long, not incised at base... .. 169. 
eaves lanceolate to ovate or arrow-shaped, often incised at the base... 172. 
169 a. Leaves narrowly heart-shaped; base of blade spreading at right angles to 
the petiole; white | of flower picuous. 
Thin-leaved Wood Violet. (Viola obliqua.) 
b. Leaves heart-shaped to ovate; base of blade somewhat folded or hood- 
shaped 
