Botanical Society of Washington Spring Flowers Foray 2 on 9 Apr 2005
to Bear Island on C&O Canal. 
* = introduced. 	1st flowering dates: average month/day (current fl. state)
Parking (Old Anglers' Inn)
1. Scrophulariac.	*Veronica hederifolia (ivy-leafed speedwell) Mar 18 (early fl.)
2. Laurac.	Lindera benzoin (spicebush) Mar 27 (late fl.)
3. Lamiac.	*Lamium purpureum (purple dead-nettle) Mar 19 (early fl.)
4. Acerac.	Acer negundo (box-elder, ash-leafed maple) Apr 4 (mid fl.)
5. Poac.	*Poa annua (annual bluegrass) Mar 23 (early fl.)
6. Brassicac.	*Cardamine hirsuta (bitter cress) Feb 27 (early fl.)
7. Lamiac.	*Glechoma hederacea (ground ivy) Mar 31 (early fl.)
8. Oleac.	Fraxinus americana (ash) Apr 8 (early fl.)
9. Ranunculac.	Ranunculus abortivus (crowfoot) Apr 7 (early fl.)
10. Caryophyllac.	*Stellaria media (common chickweed) Jan 28 (late fl.) [3 styles, petals < sepals]
11. Caryophyllac. 	Stellaria pubera (star chickweed) Apr 8 (mid fl.) [3 styles, petals > sepals]
12. Ranunculac.	*Ranunculus ficaria (lesser celandine) [sepals 3-4]
13. Salicac.	Populus deltoides (cottonwood) Apr 8 (early fl.)
14. Violac.	Viola sororia [incl. papilionacea Pursh] (common blue violet) Apr 3 (early fl.)
15.Acerac. 	Acer rubrum (red maple) 3/11
Towpath
16. Portulacac.	Claytonia virginica (spring beauty) Mar 15 (early fl.)
17. Brassic.	Arabis laevigata (smooth rock cress) [lower lvs toothed] Apr 3
18. Brassicac.	Dentaria laciniata (toothwort) Mar 25 (early fl.)
19. Asterac. 	*Senecio aureus (golden ragwort) Apr 12 (early fl.)
20. Liliac.	Erythronium americanum (trout lily) Apr 1 (early fl.)
21. Betulac.	Alnus serrulata (alder) Mar 10 (early fl.)
22. Betulac.	Ostrya virginiana (ironwood) Apr 15 (early fl.)
23. Saxifragrac. 	Saxifraga virginiensis (early saxifrage) Mar 31 (early fl.)
24. Rosac.	Amelanchier arborea (downy serviceberry) Apr 5 (early fl.)
25. Ulmac.	Celtis occidentalis (hackberry) Apr 29 (early fl.)
26. Asterac.	*Taraxacum officinale (dandelion) Mar 3 (early fl.)
Bear Island (Broadwater across to Potomac)
27. Fumariac.	Dicentra cucullaria (Dutchman's breeches) Apr 3 (mid fl.)
28. Fumariac.	Dicentra canadensis (squirrel corn) Apr 12 (early fl.)
29. Cyperac.	Carex pensylvanica? (sedge) Apr 14 (early fl.)
30. Poac.	Poa cuspidata (early blue grass) Apr 12 (early fl.)
31. Brassic.	Dentaria heterophylla (slender toothwort) Apr 5 (early fl.)
32. Fumariac.	Corydalis flavula (yellow corydalis) Apr 8 (mid fl.)
33. Boraginac. 	Mertensia virginiana (bluebells) Apr 2 (early fl.)
34. Betulac.	Carpinus carolinana (hop hornbeam) Apr 10 (early fl.)
35. Violac.	Viola pubescens [incl. pensylvanica Michx.] (stemmed yellow violet) Apr 12 (early fl.)
36. Thymelaeac.	Dirca palustris (leatherwood) Mar 26 (late fl.)
37. Berberidac.	Jeffersonia diphylla (twin-leaf) Apr 6 (mid fl.)
38. Liliac.	Trillium sessile (toad trillium) Apr 8 (early fl.)
39. Liliac.	Erythronium albidum (white trout-lily) Apr 15 (early fl.) NEW RECORD!
40. Papaverac.	Sanguinaria canadensis (bloodroot) Mar 26 (early fl.)
41. Ranunculac.	Hepatica americana (liverwort) Mar 16 (early fl.)
42. Brassicac.	Arabis lyrata (rock-cress) Apr 11 (mid fl.)
43. Ranunculac.	Anemonella thalictroides (rue anemone) 7 Apr (mid fl.)
44. Polemoniac.	Phlox subulata (moss phlox) Mar 16 (early fl.) 
45. Liliac.	*Muscari botryoides (grape hyacinth) Apr 6 (early fl.)
46. Ranunculac.	Ranunculus hispidus var. nitidus (swamp buttercup) Apr 14 (early fl.) [incl. R. septentrionalis]
47. Polemoniac. 	Phlox divaricata (blue phlox) Apr 11 (early fl.)
Return to Towpath by Billy Goat Trail (blue blazed)
48. Apiac.	Erigenia bulbosa (harbinger-of-spring) Mar 16 (late fl.)
Dan H. Nicolson
11 Apr 05
Expected but not seen in flower 9 Apr 2005
Aristolochiac. 	Asarum canadense (wild ginger) Apr 14
Betulac.	Alnus serrulata (alder) Mar 10
Brassicac.	Cardamine bulbosa (spring cress) Apr 17
Caryophyllac.	*Cerastium vulgatum (common mouse-eared chickweed) Apr [5 styles, short petals]
Cyperac.	Carex careyana Torr. (sedge)
Cyperac.	Luzula echinata (wood rush) Apr
Ranunculac.	*Ranunculus bulbosus (bulbous buttercup) Apr 21
Rosac. 	*Duchesnea indica (false strawberry) Mar 21
Rosac.	Potentilla canadensis (cinquefoil) Apr 18
Rubiac.	Houstonia caerulea (bluets) Apr 4
Violac.	Viola striata (stemmed creamy violet) Apr 14

Expected later
Apiac.	Osmorrhiza claytonii (sweet cicely) Apr 24
Arac.	Arisaema triphyllum (jack-in-the-pulpit) Apr 22
Asterac.	Erigeron philadelphicus (philadelphia daisy) May 8
Berberidac.	Podophyllum peltatum (may-apple) Apr 27
Caprifoliac. 	*Lonicera maackii (honeysuckle) May 8
Celastrac.	*Euonymus alata (winged burning bush) May 5
Cornac.	Cornus florida (flowering dogwood) Apr 21
Ericac.	Vaccinium pallidum Aiton [incl. vacillans Torrey] (low blueberry) Apr 26
Ericac.	Vaccinium stamineum (deerberry) May 6
Fagac.	Quercus alba (white oak) Apr 26
Geraniac.	Geranium maculatum (wild geranium) Apr 22
Hydrophyllac.	Phacelia purshii (miami mist) 
Hydrophyllac. 	Phacelia ranunculacea (Coville’s phacelia) Apr 25
Magnoliac. 	Liriodendron tulipifera (tulip-poplar) May 8
Orobanchac.	Conopholis americana (squawroot) May 5
Oxalidac.	Oxalis violacea (violet wood-sorrel) May 11
Poac.	*Anthoxanthum odoratum (sweet vernal grass) Apr 22
Poac.	Poa sylvestris (bluegrass) May ?
Rosac.	Rubus flagellaris? (northern dewberry) May 9
Rubiac.	Galium aparine (cleavers) 29 Apr
Staphyleac.	Staphylea trifolia (bladder-nut) Apr 22