IOWA ACADEMY OF SCIENCES. 
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Q. marylandica Muench. Decatur county. Uplands a fre- 
quent shrub associated with Q, nigra L. 
Salicace^. 
Salix nigra Marsh. Decatur, Page, and Fremont counties. 
Along streams; common. 
8. longifolia Muhl. Ringgold, Taylor, Page, and Fremont 
counties. Rich soil; frequent. 
8. humilis Marsh. Taylor county. Dry uplands; frequent. 
8. amygdaloides Anders. Page and Fremont counties. Rich 
low lands; common. 
8. cordata Muhl. Page and Fremont counties. Low lands; 
common. 
8. alba vitellina Koch. Decatur county. Becoming fre- 
quent. 
Populus tremuloides Mx. Union and Ringgold counties. 
Thickets; frequent. 
P. monilifera Ait. Clarke, Union, Adams, Montgomery, 
Ringgold, Taylor, Fremont, Lucas, and Monroe counties. Low 
lands; frequent. 
Conifers. 
Juniperus virginiana L. Decatur county. A small shrub 
found in upland woods. 
Orchidace^. 
Spiranthes cernua Richard. Johnson county, several speci- 
mens found in moist places; Decatur county, a single specimen 
found in prairie upland. 
8. gracilis Bigelow. Decatur county. About forty speci- 
mens found in upland prairie grass. 
Cypripedium parvijiorum Salisb. Decatur county. Rich 
woods; associated with G. pubescens Willd., but much less fre- 
quent. 
G. pubescenS’ Willd. Ringgold county. Rich uplands; fre- 
quent. 
G. spectabi'e Swartz. Jefferson county. Swampy soil; 
rare. Specimens were transplanted with with good results. 
Iridace^. 
Iris versicolor L. Union, Ringgold, and Page counties. 
Swamps; ponds; frequent. 
Belamcanda chinensis Adans. Ringgold, Taylor, and Page 
counties. Waysides; waste places; becoming frequent. 
