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Noy i] FLOWERING PLANTS AND FERNS 15 
SAXIFRAGA L. Saxifrage. 
Saxifraga Virginiensis Michx. Virginia Saxifrage. 
Usually on limestone ledges. Confined to the northeast- 
ern counties. Eastport; New Albany; Oxford (found only 
once). April. 
Geol. Survey Herb. 
TIARELLA L. False Mitrewort. 
Tiarella cordifolia L. 
Northeast counties on rich slopes. April. (Mohr.) 
HEUCHERA L. Alum Root. 
Heuchera Americana lL. 
Rocky or dry open woods in the northern counties. Tish- 
omingo Co.; Lafayette Co.; Itawamba Co.; Tippah Co.; Clay 
Co. April-May. 
Geol. Survey Herb. 
Heuchera villosa. Michx. 
Limestone ledges along Tennessee River near Eastport; 
rare. Summer. 
Geol. Survey Herb. 
PARNASSIA L. Grass of Parnassus. 
Parnassia grandiflora DC. 
Low wet depressions in lower Pearl River Valley. Pop- 
larville. (Mohr.) 
Parnassia Caroliniana Michx. 
Wet pine barrens of southeast Mississippi. (Mohr.) 
PHILADELPHUS L.  Syringa. 
Philadelphus grandifiorus Willd. 
Oceasional in the northern counties. Fulton; Chunky. 
Perhaps escaped from gardens. April-May. 
Geol. Surv. Herb. 
Philadelphus inodorus L. 
Moist woods and river banks. (Small.) April-May. 
