THE FLOWER CALENDAR 



Arethusa (Arethusa bulbosa). Page 250. 



Coral Root (Corallorrhiza Wisteriana and C. striata). Page 

 304. May be found in May and June. 



Calypso (C. bulbosa). Page 372. May-July. 



Adam-and-Eve (Aplectrum hyemale). Page 372. 



Bastard Toad Flax (Comandra umbellata). Page 56. 



Dutchman's Pipe (Aristolochia macro phylla) . Page 448. 



Broad-leaved Sandwort (Arenaria lateriflora). Page 64. 



Pine-barren Sandwort (A. caroliniana) . Page 62. May-July. 



Northern Stitchwort {Stellaria borealis). Page 65. 



Field Mouse-ear Chickweed (Cerastium arvense). Page 65. 

 This and other species bloom from May to July. 



Hooked Crowfoot (Ranunculus recurvatus). Page 165. 



Swamp Buttercup (R. septentrionalis). Page 165. May-August. 



Bulbous Buttercup (R. bulbosus). Page 166. May-July. 

 The Tall Buttercup (R. acris), page 166, so common as to be 

 counted a weed, comes into bloom a little later, from June to 

 August. 



Rue Anemone (Anemonella thalictroides) . Page 69. 



Thimbleweed (Anemone cylindrica). Page 71. May-July. 



Leather Flower (Clematis Viorna). Page 450. May-August. 



(C. ochroleuca). Page 308. Blossoms in May. 



(C. crispa). Page 451. May- August. 



The Purple Clematis (C. verticillaris) . Page 450. May and 

 June. 



Spreading Globeflower (Trollius laxus). Page 168. May. 



Goldthread (Coptis trifolia). Page 71. May-July. 



Sweet Bay (Magnolia virginiana). A small tree often culti- 

 vated, blossoming from May to July. 



May Apple (Podophyllum peltatum). Page 74. May. 



Umbrella Leaf (Diphylleia cymosa). Page 75. May. 



Common Barberry (Berberis vulgaris). Page 426. 



Celandine Poppy (Stylophorum diphyllum). Page 168. May. 



Celandine (Chelidonium majus). Page 168. May- August. 



Pale Corydalis (Corydalis sempervirens) . Page 258. May- 

 August. 



Golden Corydalis (C. aurea). Page 169. May- August. 



Spring Cress (Cardamine bulbosa). Page 80. 



Cuckoo Flower (C. pratensis). Page 80. May. 



Tower Mustard (Arabis glabra). Page 81. May-July. 



(A. hirsuta). Page 81. May, June. 



(A. laevigata). Page 81. May. 



Stonecrop (Sedum ternatum). Page 83. May. 



Swamp Saxifrage (Saxifraga pennsylvanica) . Page 31. 



Miterwort (Mitella diphylla). Page 85. May. 



(M. nuda). Page ^3. May- July. 



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