23. Seen in full bloom in gardens, the pear-tree, plum-tree, Riber grossularia, and R. rubrum.
24. Found in blossom along the Schuylkill, Aguilegia canadensis, Hyacinthus botryoides, Ranunculus fascicularis, Violapapilionacea. V. decumbens, Raf., Houstonia cerulea, Cerastium pumilum, Raf.
25. Found in blossom near Cambden, Viola pedata, V. lanceolata, V. ovata, Raf., V. primulifolia, Arabis parviflora, Raf., Cerastium pumilum, Raf., Carex acuta, Meopilus botryapium, Laurus sassafras, Cercis canadensis, Potentilla simplex, Andromeda racemoca.
28. Seen in blossom in gardens, Calycanthus floridus, Syringa persica, Phlox pilosa, &c. The leaves of Liriodendron tulipifera, Æsculus hippocastanum, Populus fastigiata, P. angulata, are unfolded.
30. In blossom on the Schuylkill, Obolaria virginiana, Anemone trifolia, Hydrastis canadensis, &c.
May 1. In blossom in the Neck, Cerastium vulgatum? Veronica serpyllifolia, V. arvensis, Ranunculus bulbosus, Viola cucultata.
3. Found above the Falls of the Schuylkill, Viola striata, V. concolor, V. primulifolia, V. blanda, Fumaria aurea, F. cucullaria, Charophyllum procumbens, Uvularia sessitifolia, U. perfoliata, Cercis canadensis, Arabis falcata, Stellaria pubera, Erigeron pulchellum, Orchis spectabilis, Hydrastis canadensis, Dentaria diphylla, Azalea nudiflora, &c.
4. Found on the Vissahikon, Arabis bulbosa, Panax trifolium, Viola pectata, V. rotundifolia, Cardamine pennsylvanica, Krigia virginica, and several grasses.
7. Found in blossom over the Schuylkill, Laurus sassafras, Viburnum prunifolium, Aronia arbutifolia, A. melanocarpa, Fragaria virginica, Cerastium nutans, Raf., Convallaria majalis, naturalized, and several species of the genus Vaccinium.
10. Found below the falls of the Schuylkill, Floerkea uliginosa, Viburnum acerifolium, Oxalis violacea, Cerastium tenuifolium, lechoma hederacea, &c.: and the following above the Falls—Trillium cernuum, Viola pubescens, V. pennsylvanica, Hydrophyllum virginicum, Polemonium reptans, Senecio aureus, Saxifraga pennsylvanica, Staphylea trifoliata, Obolaria virginica, Caltha palustris, Ranunculus abortivus, &c.