Two species of Bellwort (Uvularia perfoliata and U. grandiflora), page 150; also the allied species (Oakesia sessilifolius and O. puberula), page 150. From April to the last of May or first of June.
Grape Hyacinth (Muscari botryoides). Page 300.
Wake Robin (Trillium erectum). Page 244. Until May.
(T. grandiflorum). Page 48. (T. cernuum and T. undulatum). Page 50. The trilliums are often in bloom through the greater part of May.
Blue-eyed Grass (Sisyrinchium gramineum). Page 302. April-June.
Hazlenut (Corylus americana and C. rostrata). Page 380. Two species of this shrub. April, May.
Other shrubs coming into blossom in this month are the birches and alders (Betula and Alnus). Page 381.
Wild Ginger (Asarum canadense). Page 305. Until May.
Wild Pink (Silene pennsylvanica). Page 256. April-June.
Spring Beauty (Claytonia virginica and C. caroliniana). Page 258.
Crowfoots (Ranunculus pusillus, R. abortivus and R. fascicu-laris), pages 164 and 165, may be found in bloom all summer.
Early Meadow Rue (Thalictrum dioicum). Page 30. April, May.
Wood Anemone (Anemone quinquefolia). Page 71. April, May.
Marsh Marigold (Caltha palustris). Page 166. April-June.
Wild Columbine (Aquilegia canadensis). Page 372.
Dwarf Larkspur (Delphinium tricorne). Page 310.
Red Baneberry (Actaea rubra). Page 73.
White Baneberry (A. alba). Page 73.
Golden Seal (Hydrastis canadensis). Page 74.
Shrub Yellow-root (Zanthorhiza apiifolia). Page 451. April-August.
Carolina Allspice (Calycanthus floridus). Page 451. April-August.
Twinleaf (Jeffersonia diphylla). Page 74. April, May.
Blue Cohosh (Caulophyllum thalictroides). Page 30. April, May.
Bloodroot (Sanguinaria canadensis). Page 75. April, May.
Dutchman's Breeches (Dicentra Cucullaria). Page 77. April, May.
Squirrel Corn (D. canadensis). Page 77. April, May.
Whitlow Grass (Draba verna). Page 77. April, May.
Shepherd's Purse (Capsella Bursa-pastoris). Page 79. April September.
Hedge Mustard (Sisymbrium officinale). Page 170. April, May.
Mouse-ear Cress (5. Thalianum). Page 79. April, May.
(D. laciniata). Page 80. Until early May.
Rock Cress (Arabis lyrata). Page 81. April-July.
Trumpets (Sarraccnia flava). April. A southern species of Pitcher-plant, with yellow flowers and long trumpet-shape leaves.
Early Saxifrage (Saxifraga virginiensis). Page 83. April-June.
False Miterwort (Tiarella cordifolia). Page 85. April-June.
Chokeberry (Pyrus arbutifolia). Page 395. April-June.
Wild Strawberry (Fragaria virginiana). Page 86. April, May.
Sand Cherry (Prunus pumila). Page 401. April, May.
Wild Cranesbill (Geranium maculatum). Page 262. April-July.
Green Violet (Hybanthus concolor). Page 94. April-July.
Wicopy (Dirca palustris). Page 431. April.
Ginseng (Panax trifolium). Page 100. April, May.
Cassandra (Chamaedaphne calycnlata). Page 413. April, May.
Trailing Arbutus (Epigaea re pens). Page no. April to the first half of May.
Flowering Moss. Pyxie (Pyxidanthera barbulata). Page 114. April, May.
Myrtle (Vinca minor). Page 326. April-June.
Moss Pink (Phlox subulata). Page 285. April-June.
Greek Valerian (Polemoninm roptans). Page 328. April-June.
Early Scorpion Grass (Myosotis virginica). Page 119. April-July.
Virginian Cowslip (Mertensia virginica). Page 330. April, May.
Corn Gromwell (Lithospcrmum arvense). Page 119. April-June.
Skullcap (Scutellaria parvvUa). Page 335. April-July.
Dead Nettle (Lamium amplexicaule). Page 337. April-October.
One-flowered Cancer-root (Orobanclw uniflora). Page 351. April-July.
Bluets (Houstonia coerulea). Page 129. April-July.
American Fly Honeysuckle (Lonicera canadensis). Page 436. April-June.
Robin's Plantain (Erigeron pulchellus). Page 364. April-June.
Plantain-leaved Everlasting (Antennaria plantaginifolia). Page 140. April-June.
Dwarf Dandelion (Krigia virginica). Page 236. April-August.
Common Dandelion (Taraxacum officinale). Page 237. April-September.