Co Ca Gr St Be Me Su Ru Hi Cli 



Lindera Benzoin X X XX 



Ribes cynosbati XXXXXXX XX 



R. hirtellum var. 



hirtellum X X X X XXX 



var. saxosum x XX 



var. calcicola x 



R. Grossularia i 1 



R. lacustre XXX 



R. glandulosum XXXXXXXXXX 



R. triste XXX 



R. sativum i i i i i i i 



R. amerii-anum XXXXX XXX 



R. nigrum i i i i 



R. odoratum 1 



Hamamelis virginiana 



var. virginiana XXXXXXXXXX 



var. parvifolia X X 



Platanus occidentalis 1 X i X 



Physocarpus opulifoliu.s i i i 



Soiraea lati folia var. 



latifolia XXXXXXSXXX 



var. septentrionalis XXX 



S. tomentosa XXXXXXSXXX 



Sorbaria sorbifolia i i i i i i 



Pyrus communis 11 i 



P. Malus 1 illssslii 



P. arbutifolia i 



P. floribunda XXXXXXXXXX 



P. melanocarpa XXXXXXXXXX 



P. americana x XXXXXXXXX 



P. decora var. decora XXX XX 



var. groenlandica x 



Lindera Benzoin ( L. ) Blume. Spiceljush. 



Local, mostly in southeastern New Hampshire, outlying stations in Peterboro, 

 I'rancestown and Concord ; swampy woods. 



Species of Ribes serve as alternate hosts of the Pine Blister Rust. At present 

 selective eradication is being carried on in areas of Pnius Strobiis. After years of 

 former intensive effort to reduce the Ribes population throughout the state, the 

 following species are to be found in New Hampshire, some of them in considerable 

 abundance locally. 



Ribes cynosbati L. I'rickly Gooseberry. 



Frequent in northern, west central, and southwestern sections of state, at low 

 elevations; outlying station in Strafford; rich and often rocky slopes and talus: 

 fcrma iiier)iie Rehder, lacking spines, occurs sparingly throughout range. 



R. hirtellum Michx. var. hirtellum. Smooth Gooseberry. 



Frequent at low elevations in swampy woods and openings in north, central and 

 southeastern New Hampshire, no records from southwestern New Hampshire : the 

 following vars. mav be more abundant than is indicated bv collections. 



26 



