pre ree Michaux, p. 778 
sa [S: H. villosa var. macrorhiza (Small) C. Rosend., 
puiwenia & Lakela] (Wells, 1984) 
HYDRANGEA (see HYDRANGEACEAE) 
ITEA (see GROSSULARIACEAE) 
MITELLA, miterwort, bishop’s cap 
Mitella diphylla L., p. 781 
f. diphylla 
PARNASSIA, grass-of-Parnassus 
[M: PARNASSIACEAE] 
Parnassia grandifolia DC., p. 781 
PENTHORUM, ditch stonecrop 
[G: CRASSULACEAE] 
Penthorum sedoides L., p. 774 
PHILADELPHUS (see HYDRANGEACEAE) 
RIBES (see GROSSULARIACEAE) 
SAXIFRAGA, saxifrage 
Saxifraga pensylvanica L., p. 775 
be regarded as a distinct spect 
logical, cytological, and phytogeographie 
more recently, Phillips and Kowal 1983) — 
whether it should be recognized taxonom mically at i 
and pointed out that the cytological and morphologica 
‘ k 
S: Steyermark G: Great Plains Flora M: Mohlenbroc 
