OONtENTS. Xi 



«Shap. page 

 XXXV. The Mouse-ear Everlasting — Antennaria. Stolons. 

 Dioecious plants. Heads of florets. Receptacle. In- 

 volucre. Pappus clubby. Cypsela 187 



XXXVI. Robin's Plantain — Erigeron. Heads radiate. Florets 



of the ray. Florets of the disk. Ligulate corolla. . 140 



XXXVII. TuE Dandelion— Taraxacum. Runcinate leaves. Ra- 



diant, homogamous heads. Chaff. Syngenecious 

 anthers. The order CoMPOSiTyE. Chickory, Camo- 

 mile, Aster. Chrysanthemum. Solidago 143 



XXXVIII. The Check ;:RBERRY—Gaultheria. Urceolate corolla. 



Curious fruit. The Black Checkerberry 147 



XXXIX. TriE Pyrolas. Anthers inverted in bud , opening by 



pores. The six species 150 



XL. Prince's Pine— Chimaphila. Horned anthers 152 



XLI. The Kal^iias. Elastic stamens. Pollenization. The 

 order Ericaceae. The Heaths. Blueberries. Cranber- 

 ries. Azalias May-flower 155 



XLII. The Pitcher Plant— Sarracenia. Ascidia. Order Sar- 



R.\CENIACE.E. Camivorous Planter. Venus' Flytrap . . 158 

 XLIII. The American Cowslip— Dodecatheon. Opposing 



stamens. Dimorphism. Free central placenta 161 



XLIV. Chick WiNTERGREEN — Trientalis. 7-parted flowers. . . 164 

 XLV. The Loosestrifes — Lysimachia. Verticillate leaves.- 

 Monadelphous stamens. Opposing stamens explained. 

 Order Piumulace.e. Cyclamen. Anagallis. Primrose. 165 

 XL VI. The Speedwells — Veronica. Why so called, A two- 

 celled capsule. Exserted stamens. The species .... 170 

 XLVII. Toad Flax — Linaria. Pentamerous flowers. Personate 

 corolla. The spur, — what can reach its honey. Order 



Scrophul.vce.e. Digitalis. Pentstemon 173 



XLVIII. The Ground Ivy — Nepeta. Naturalized plants. Bi- 

 labiate corolla. Halved anthers. Seeds ap])areutly 



naked. The Catmint 1 76 



XLIX. Blue Curls — Brunella, Cuspidate bracts. Hairs jointed. 

 The lip a doorstep for bees. Order Labiat.e. Pep- 

 permint. Oil of Spike. Lavender 179 



L. The Morning Glory — Ipomoea. Ephemeral flowers. 

 Supervolute fpstivation. The disk. Use of pollen ; 

 — nectar. Septifragnl dehiscence. Albumen. Vital- 

 ity of seed. The bud. CoNVOLVUf ace.e 182 



LI. Rock Maple — Acer. Tree picturesque. Theory of leaf- 

 forms. Autumnal colors. Maple sugar. Other Maplee. 188 



LII. The Horsi^. Chestnut— .'Rsculus. History. Phyllo- 

 taxy. Digitate leaves. Sujij^'ssion of ovules. The 



Sapindace.e. The Sonpberry tree 11)2 



LIII. The Silk Grass — Ascl«-)>ias. Pollinia. Corona, hoods 

 and horns. Cross fertilization. The Ast lepiadace^E 

 The Cow tree. Carrion flower. ... 195 



