140 



Trees: Pinus, Tsuga, Juniperus, Chamaecyparis, Populus, Salix, Ostrya, 

 Hicoria ovata, Betula Allegheniensis, B. lutea, Quercus coccinea, Q. Marylandica, 

 Q. montana, Q. stellata, Ulmus, Morus, Platanus, Crataegus, Acer Saccharum, 

 A. saccharinum, Tilia, Diospyros, Fraxinus spp. 



Shrubs and vines: Juniperus communis depressa, Smilax glauca, Salix spp., 

 Myrica, Comptonia, Corj'lus, Quercus ilicifolia, Q. prinoides, Hamamelis, Ribes, 

 Spiraea, Prunus maritima and others, Amelanchier, Crataegus, Ceanothus, Azalea 

 nudiflora, Kalmia, Chamaedaphne, Pieris Mariana, Arctostapkylos, Gaylussacia, 

 Polycodium, Vaccinium spp., Rhus hirta, R. copallina. Ilex glabra, Nemopanthes, 

 Dirca, Viburnum Lentago, V. cassinoides, Lonicera, Diervilla, Baccharis. 



Herbs: Botrychium, Dennstaedtia, Dryopteris spp., Anchistea, Lorinseria, 

 Asplenium platyneuron, Pteridium, Polypodium, Equisetum spp., Lycopodium, 

 Selaginella, Isoeles; Potamogeton, Triglochin, Vallisneria, Andropogon, Sorghas- 

 trum, Paspalum, Aristida, Muhlenbergia, Brachyelytrum, Sporobolus, Calama- 

 grostis, Deschampsia, Eragrostis, Elymus, Cyperus, Eleocharis spp., Scirpus spp., 

 Rhynchospora, Carex spp., Spirodela, Xyris, Pontederia, Juncus spp., Mel.\n- 

 TH.\CEAE, Lilium, Erythronium, Aletris, Vagnera stellata, Trillium, Iris, Orchida- 

 CEAE; Saururus, Urticastrum, Boehmeria, Comandra, Asarum, Persicaria, Poly- 

 gonella, Claytonia, Silene, Brasenia, Castalia, Caltha, Aquilegia, Anemone, Hepal- 

 ica. Clematis, Ranunculus, Podophyllum, Sanguinaria, BicucuUa, Capnoides, 

 Cruciferae, Sarracenia, Drosera, Parnassia, Chrysosplenium, Heuchera, Tiarella, 

 Saxifraga, Sanguisorba, Leguminosae, Geranium Robertianum, Linum, Polygala, 

 Euphorbiaceae, Hypericum, Cistaceae, Viola pedata and several others, Opuntia, 

 Rhexia, KneifiEia, Proserpinaca, Myriophyllum, Aralia, Panax, Hydrocotyle, Zizia 

 Oxj'polis, Pyrola, Chimaphila, Monotropa, Hypopitys, Epigaea, GauUheria, Trien- 

 talis, Limonium, Sabbatia, Gentiana, Bartonia, Apocynum, Asclepias, Acerates, 

 Ipomoea, Labiat.'^e, Chelone, Mimulus, Gratiola, Ilysanthes, Veronica, Leptandra, 

 Aureolaria, Agalinis, Melampyrum, Lentibulariaceae, Plantago (native species), 

 Houstonia, Milchella, Triosteum, Campanula, Lobelia, Eupatorium spp., Lacini- 

 aria, Chrysopsis, Solidago spp., Sericocarpus, Aster spp., Erigeron pulchellus, 

 Doellingeria, lonactis, Antennaria (except A. neglecta), Rudbeckia, Helianthus, 

 Hieracium spp. 



The scarcity of many of these is easily explained by the 

 rarity or absence of fire, rivers, ponds, peat bogs, dunes, rock 

 outcrops, and sandy, calcareous, and alluvial soils; but some 

 of the cases are still mysteries. Quite a number of the absentees 

 are in the neighborhood of New York chiefly confined to moun- 

 tainous regions, but range southward to Middle Georgia or 

 thereabouts, so that it can hardly be any temperature factor 

 that keeps them away from Long Island. 



The species of Crataegus seem to be most numerous in cal- 

 careous regions, but there are many non-calciphile species in 

 the genus, which one might suppose could find a congenial home 

 here. But many of the recently described species are known 



